diff --git a/.cspell.json b/.cspell.json
index e6c6f1fa0a..9bcb16b2b7 100644
--- a/.cspell.json
+++ b/.cspell.json
@@ -104,6 +104,7 @@
     "reactjs",
     "recid",
     "rlnrelay",
+    "rlnv",
     "roadmap",
     "sandboxed",
     "scanf",
@@ -132,7 +133,9 @@
     "upgrader",
     "vacp",
     "varint",
+    "viem",
     "vkey",
+    "wagmi",
     "waku",
     "wakuconnect",
     "wakunode",
diff --git a/.gitignore b/.gitignore
index 1e6952cf2f..188172b1d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ packages/discovery/mock_local_storage
 CLAUDE.md
 .env
 postgres-data/
+packages/rln/waku-rlnv2-contract/
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000..31530f9b50
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "packages/rln/waku-rlnv2-contract"]
+	path = packages/rln/waku-rlnv2-contract
+	url = git@github.com:waku-org/waku-rlnv2-contract.git
diff --git a/package-lock.json b/package-lock.json
index 9bc9d3b4ed..57bd6f48d8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -52,6 +52,12 @@
         "wscat": "^6.0.1"
       }
     },
+    "node_modules/@adraffy/ens-normalize": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/@adraffy/ens-normalize/-/ens-normalize-1.11.1.tgz",
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+      "license": "MIT"
+    },
     "node_modules/@ampproject/remapping": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
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+        "@noble/hashes": "1.8.0",
+        "@scure/bip32": "1.7.0",
+        "@scure/bip39": "1.6.0",
+        "abitype": "1.1.0",
+        "isows": "1.0.7",
+        "ox": "0.9.6",
+        "ws": "8.18.3"
+      },
+      "peerDependencies": {
+        "typescript": ">=5.0.4"
+      },
+      "peerDependenciesMeta": {
+        "typescript": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/viem/node_modules/@noble/curves": {
+      "version": "1.9.1",
+      "resolved": "https://registry.npmjs.org/@noble/curves/-/curves-1.9.1.tgz",
+      "integrity": "sha512-k11yZxZg+t+gWvBbIswW0yoJlu8cHOC7dhunwOzoWH/mXGBiYyR4YY6hAEK/3EUs4UpB8la1RfdRpeGsFHkWsA==",
+      "license": "MIT",
+      "dependencies": {
+        "@noble/hashes": "1.8.0"
+      },
+      "engines": {
+        "node": "^14.21.3 || >=16"
+      },
+      "funding": {
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
+    "node_modules/viem/node_modules/abitype": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/abitype/-/abitype-1.1.0.tgz",
+      "integrity": "sha512-6Vh4HcRxNMLA0puzPjM5GBgT4aAcFGKZzSgAXvuZ27shJP6NEpielTuqbBmZILR5/xd0PizkBGy5hReKz9jl5A==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/wevm"
+      },
+      "peerDependencies": {
+        "typescript": ">=5.0.4",
+        "zod": "^3.22.0 || ^4.0.0"
+      },
+      "peerDependenciesMeta": {
+        "typescript": {
+          "optional": true
+        },
+        "zod": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/void-elements": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/void-elements/-/void-elements-2.0.1.tgz",
@@ -33755,12 +33358,41 @@
       "version": "3.25.76",
       "resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
       "integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
     },
+    "node_modules/zustand": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/zustand/-/zustand-5.0.0.tgz",
+      "integrity": "sha512-LE+VcmbartOPM+auOjCCLQOsQ05zUTp8RkgwRzefUk+2jISdMMFnxvyTjA4YNWr5ZGXYbVsEMZosttuxUBkojQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.20.0"
+      },
+      "peerDependencies": {
+        "@types/react": ">=18.0.0",
+        "immer": ">=9.0.6",
+        "react": ">=18.0.0",
+        "use-sync-external-store": ">=1.2.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/react": {
+          "optional": true
+        },
+        "immer": {
+          "optional": true
+        },
+        "react": {
+          "optional": true
+        },
+        "use-sync-external-store": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/zwitch": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/zwitch/-/zwitch-2.0.4.tgz",
@@ -35092,18 +34724,20 @@
       "dependencies": {
         "@chainsafe/bls-keystore": "3.0.0",
         "@noble/hashes": "^1.2.0",
+        "@wagmi/core": "^2.22.1",
         "@waku/core": "^0.0.40",
         "@waku/utils": "^0.0.27",
         "@waku/zerokit-rln-wasm": "^0.2.1",
+        "@waku/zerokit-rln-wasm-utils": "^0.1.0",
         "chai": "^5.1.2",
         "chai-as-promised": "^8.0.1",
         "chai-spies": "^1.1.0",
         "chai-subset": "^1.6.0",
         "ethereum-cryptography": "^3.1.0",
-        "ethers": "^5.7.2",
         "lodash": "^4.17.21",
         "sinon": "^19.0.2",
-        "uuid": "^11.0.5"
+        "uuid": "^11.0.5",
+        "viem": "^2.38.4"
       },
       "devDependencies": {
         "@rollup/plugin-commonjs": "^25.0.7",
@@ -35114,9 +34748,9 @@
         "@types/deep-equal-in-any-order": "^1.0.4",
         "@types/lodash": "^4.17.15",
         "@types/sinon": "^17.0.3",
+        "@wagmi/cli": "^2.7.0",
         "@waku/build-utils": "^1.0.0",
-        "@waku/interfaces": "0.0.34",
-        "@waku/message-encryption": "^0.0.38",
+        "@waku/message-encryption": "^0.0.37",
         "deep-equal-in-any-order": "^2.0.6",
         "fast-check": "^3.23.2",
         "rollup-plugin-copy": "^3.5.0"
@@ -35140,6 +34774,89 @@
         "@types/deep-eql": "*"
       }
     },
+    "packages/rln/node_modules/@waku/message-encryption": {
+      "version": "0.0.37",
+      "resolved": "https://registry.npmjs.org/@waku/message-encryption/-/message-encryption-0.0.37.tgz",
+      "integrity": "sha512-8WmDxVnitqzxWrKRHdmHmOKk81LBh0OE9uLFzBNxirmH9G4uDx0va3+S4lazgCQ4kT0zKrsN8VldX0BfePTVDQ==",
+      "dev": true,
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@noble/secp256k1": "^1.7.1",
+        "@waku/core": "0.0.39",
+        "@waku/interfaces": "0.0.34",
+        "@waku/proto": "0.0.14",
+        "@waku/utils": "0.0.27",
+        "debug": "^4.3.4",
+        "js-sha3": "^0.9.2",
+        "uint8arrays": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
+    "packages/rln/node_modules/@waku/message-encryption/node_modules/@waku/core": {
+      "version": "0.0.39",
+      "resolved": "https://registry.npmjs.org/@waku/core/-/core-0.0.39.tgz",
+      "integrity": "sha512-Vgb52md4GOzM5z9xfULzjN2tvVHKszFmj5zc2mVDoIgySH4cFBgDTHtVtGEwrFRFWadWYKBtpKBdmG3X+W7SNA==",
+      "dev": true,
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "@libp2p/ping": "2.0.35",
+        "@noble/hashes": "^1.3.2",
+        "@waku/enr": "^0.0.33",
+        "@waku/interfaces": "0.0.34",
+        "@waku/proto": "0.0.14",
+        "@waku/utils": "0.0.27",
+        "debug": "^4.3.4",
+        "it-all": "^3.0.4",
+        "it-length-prefixed": "^9.0.4",
+        "it-pipe": "^3.0.1",
+        "uint8arraylist": "^2.4.3",
+        "uuid": "^9.0.0"
+      },
+      "engines": {
+        "node": ">=22"
+      },
+      "peerDependencies": {
+        "@multiformats/multiaddr": "^12.0.0",
+        "libp2p": "2.8.11"
+      },
+      "peerDependenciesMeta": {
+        "@multiformats/multiaddr": {
+          "optional": true
+        },
+        "libp2p": {
+          "optional": true
+        }
+      }
+    },
+    "packages/rln/node_modules/@waku/message-encryption/node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "dev": true,
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
+    "packages/rln/node_modules/@waku/proto": {
+      "version": "0.0.14",
+      "resolved": "https://registry.npmjs.org/@waku/proto/-/proto-0.0.14.tgz",
+      "integrity": "sha512-8zKVHrKzzKQfZBVnpSmJ6G8H1Zd4Gqms1tj3L6K2WCE/NQDR8wJtFwziab3dJ/5rKUTjfPAWFJ57RN97ltzxGA==",
+      "dev": true,
+      "license": "MIT OR Apache-2.0",
+      "dependencies": {
+        "protons-runtime": "^5.4.0"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
     "packages/rln/node_modules/assertion-error": {
       "version": "2.0.1",
       "license": "MIT",
@@ -35192,6 +34909,13 @@
         "node": ">=0.3.1"
       }
     },
+    "packages/rln/node_modules/js-sha3": {
+      "version": "0.9.3",
+      "resolved": "https://registry.npmjs.org/js-sha3/-/js-sha3-0.9.3.tgz",
+      "integrity": "sha512-BcJPCQeLg6WjEx3FE591wVAevlli8lxsxm9/FzV4HXkV49TmBH38Yvrpce6fjbADGMKFrBMGTqrVz3qPIZ88Gg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "packages/rln/node_modules/loupe": {
       "version": "3.1.3",
       "license": "MIT"
diff --git a/packages/rln/.eslintrc.cjs b/packages/rln/.eslintrc.cjs
index c49a7edc19..b274db12d2 100644
--- a/packages/rln/.eslintrc.cjs
+++ b/packages/rln/.eslintrc.cjs
@@ -3,5 +3,10 @@ module.exports = {
     tsconfigRootDir: __dirname,
     project: "./tsconfig.dev.json"
   },
-  ignorePatterns: ["src/resources/**/*"]
+  ignorePatterns: ["src/resources/**/*"],
+  overrides: [
+    {
+      files: ["*.config.ts", "*.config.js"]
+    }
+  ]
 };
diff --git a/packages/rln/.mocha.reporters.json b/packages/rln/.mocha.reporters.json
new file mode 100644
index 0000000000..8b32b1de9c
--- /dev/null
+++ b/packages/rln/.mocha.reporters.json
@@ -0,0 +1,6 @@
+{
+    "reporterEnabled": "spec, allure-mocha",
+    "allureMochaReporter": {
+      "outputDir": "allure-results"
+    }
+  }
\ No newline at end of file
diff --git a/packages/rln/.mocharc.cjs b/packages/rln/.mocharc.cjs
index 268cf0c611..fb31453aed 100644
--- a/packages/rln/.mocharc.cjs
+++ b/packages/rln/.mocharc.cjs
@@ -20,8 +20,11 @@ if (process.env.CI) {
   config.reporterOptions = {
     configFile: '.mocha.reporters.json'
   };
+  // Exclude integration tests in CI (they require RPC access)
+  console.log("Excluding integration tests in CI environment");
+  config.ignore = ['src/**/*.integration.spec.ts', 'src/**/*.browser.spec.ts'];
 } else {
   console.log("Running tests serially. To enable parallel execution update mocha config");
 }
 
-module.exports = config;
\ No newline at end of file
+module.exports = config;
diff --git a/packages/rln/README.md b/packages/rln/README.md
index 3de34d55a1..653cf4e998 100644
--- a/packages/rln/README.md
+++ b/packages/rln/README.md
@@ -12,6 +12,18 @@ This package provides RLN functionality for the Waku protocol, enabling rate-lim
 npm install @waku/rln
 ```
 
+## Smart Contract Type Generation
+
+We use `wagmi` to generate TypeScript bindings for interacting with the RLN smart contracts.
+
+When changes are pushed to the `waku-rlnv2-contract` repository, run the following script to fetch and build the latest contracts and generate the TypeScript bindings:
+
+```
+npm run setup:contract-abi
+```
+
+Note that we commit/bundle the generated typings, so it's not necessary to run this script unless the contracts are updated.
+
 ## Usage
 
 ```typescript
@@ -20,11 +32,6 @@ import { RLN } from '@waku/rln';
 // Usage examples coming soon
 ```
 
-## Constants
-
-- Implementation contract: 0xde2260ca49300357d5af4153cda0d18f7b3ea9b3
-- Proxy contract: 0xb9cd878c90e49f797b4431fbf4fb333108cb90e6
-
 ## License
 
-MIT OR Apache-2.0 
\ No newline at end of file
+MIT OR Apache-2.0 
diff --git a/packages/rln/generate_contract_abi.sh b/packages/rln/generate_contract_abi.sh
new file mode 100755
index 0000000000..3a41c7c4fa
--- /dev/null
+++ b/packages/rln/generate_contract_abi.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+
+set -e
+
+# Script to generate contract ABIs from waku-rlnv2-contract
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+CONTRACT_DIR="$SCRIPT_DIR/waku-rlnv2-contract"
+REPO_URL="git@github.com:waku-org/waku-rlnv2-contract.git"
+
+echo "📦 Setting up waku-rlnv2-contract..."
+
+# Remove existing directory if it exists
+if [ -d "$CONTRACT_DIR" ]; then
+  echo "🗑️  Removing existing waku-rlnv2-contract directory..."
+  rm -rf "$CONTRACT_DIR"
+fi
+
+# Clone the repository
+echo "📥 Cloning waku-rlnv2-contract..."
+git clone "$REPO_URL" "$CONTRACT_DIR"
+
+# Navigate to contract directory
+cd "$CONTRACT_DIR"
+
+# Install dependencies
+echo "📦 Installing dependencies..."
+npm install
+
+# Build contracts with Foundry
+echo "🔨 Building contracts with Foundry..."
+forge build
+
+# Navigate back to rln package
+cd "$SCRIPT_DIR"
+
+# Generate ABIs with wagmi
+echo "⚙️  Generating ABIs with wagmi..."
+npx wagmi generate
+
+echo "✅ Contract ABIs generated successfully!"
+echo "📄 Output: src/contract/wagmi/generated.ts"
diff --git a/packages/rln/karma.conf.cjs b/packages/rln/karma.conf.cjs
index f922aa1d9c..6befe4047b 100644
--- a/packages/rln/karma.conf.cjs
+++ b/packages/rln/karma.conf.cjs
@@ -38,9 +38,19 @@ module.exports = function (config) {
         watched: false,
         type: "wasm",
         nocache: true
+      },
+      {
+        pattern: "../../node_modules/@waku/zerokit-rln-wasm-utils/*.wasm",
+        included: false,
+        served: true,
+        watched: false,
+        type: "wasm",
+        nocache: true
       }
     ],
 
+    exclude: process.env.CI ? ["src/**/*.integration.spec.ts"] : [],
+
     preprocessors: {
       "src/**/*.spec.ts": ["webpack"]
     },
@@ -82,6 +92,12 @@ module.exports = function (config) {
           __dirname,
           "../../node_modules/@waku/zerokit-rln-wasm/rln_wasm_bg.wasm"
         ),
+      "/base/rln_wasm_utils_bg.wasm":
+        "/absolute" +
+        path.resolve(
+          __dirname,
+          "../../node_modules/@waku/zerokit-rln-wasm-utils/rln_wasm_utils_bg.wasm"
+        ),
       "/base/rln.wasm":
         "/absolute" + path.resolve(__dirname, "src/resources/rln.wasm"),
       "/base/rln_final.zkey":
diff --git a/packages/rln/package.json b/packages/rln/package.json
index 6d1962b6a0..2b479d65e0 100644
--- a/packages/rln/package.json
+++ b/packages/rln/package.json
@@ -43,7 +43,8 @@
     "watch:build": "tsc -p tsconfig.json -w",
     "watch:test": "mocha --watch",
     "prepublish": "npm run build",
-    "reset-hard": "git clean -dfx -e .idea && git reset --hard && npm i && npm run build"
+    "reset-hard": "git clean -dfx -e .idea && git reset --hard && npm i && npm run build",
+    "setup:contract-abi": "./generate_contract_abi.sh"
   },
   "engines": {
     "node": ">=22"
@@ -54,12 +55,12 @@
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@types/chai": "^5.0.1",
     "@types/chai-spies": "^1.0.6",
-    "@waku/interfaces": "0.0.34",
     "@types/deep-equal-in-any-order": "^1.0.4",
     "@types/lodash": "^4.17.15",
     "@types/sinon": "^17.0.3",
+    "@wagmi/cli": "^2.7.0",
     "@waku/build-utils": "^1.0.0",
-    "@waku/message-encryption": "^0.0.38",
+    "@waku/message-encryption": "^0.0.37",
     "deep-equal-in-any-order": "^2.0.6",
     "fast-check": "^3.23.2",
     "rollup-plugin-copy": "^3.5.0"
@@ -76,18 +77,20 @@
   ],
   "dependencies": {
     "@chainsafe/bls-keystore": "3.0.0",
+    "@noble/hashes": "^1.2.0",
+    "@wagmi/core": "^2.22.1",
     "@waku/core": "^0.0.40",
     "@waku/utils": "^0.0.27",
-    "@noble/hashes": "^1.2.0",
     "@waku/zerokit-rln-wasm": "^0.2.1",
-    "ethereum-cryptography": "^3.1.0",
-    "ethers": "^5.7.2",
-    "lodash": "^4.17.21",
-    "uuid": "^11.0.5",
+    "@waku/zerokit-rln-wasm-utils": "^0.1.0",
     "chai": "^5.1.2",
     "chai-as-promised": "^8.0.1",
     "chai-spies": "^1.1.0",
     "chai-subset": "^1.6.0",
-    "sinon": "^19.0.2"
+    "ethereum-cryptography": "^3.1.0",
+    "lodash": "^4.17.21",
+    "sinon": "^19.0.2",
+    "uuid": "^11.0.5",
+    "viem": "^2.38.4"
   }
 }
diff --git a/packages/rln/src/contract/abi/price_calculator.ts b/packages/rln/src/contract/abi/price_calculator.ts
deleted file mode 100644
index 8199e7764b..0000000000
--- a/packages/rln/src/contract/abi/price_calculator.ts
+++ /dev/null
@@ -1,93 +0,0 @@
-export const PRICE_CALCULATOR_ABI = [
-  {
-    inputs: [
-      { internalType: "address", name: "_token", type: "address" },
-      {
-        internalType: "uint256",
-        name: "_pricePerMessagePerEpoch",
-        type: "uint256"
-      }
-    ],
-    stateMutability: "nonpayable",
-    type: "constructor"
-  },
-  { inputs: [], name: "OnlyTokensAllowed", type: "error" },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: true,
-        internalType: "address",
-        name: "previousOwner",
-        type: "address"
-      },
-      {
-        indexed: true,
-        internalType: "address",
-        name: "newOwner",
-        type: "address"
-      }
-    ],
-    name: "OwnershipTransferred",
-    type: "event"
-  },
-  {
-    inputs: [{ internalType: "uint32", name: "_rateLimit", type: "uint32" }],
-    name: "calculate",
-    outputs: [
-      { internalType: "address", name: "", type: "address" },
-      { internalType: "uint256", name: "", type: "uint256" }
-    ],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "owner",
-    outputs: [{ internalType: "address", name: "", type: "address" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "pricePerMessagePerEpoch",
-    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "renounceOwnership",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "_token", type: "address" },
-      {
-        internalType: "uint256",
-        name: "_pricePerMessagePerEpoch",
-        type: "uint256"
-      }
-    ],
-    name: "setTokenAndPrice",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "token",
-    outputs: [{ internalType: "address", name: "", type: "address" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "address", name: "newOwner", type: "address" }],
-    name: "transferOwnership",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  }
-];
diff --git a/packages/rln/src/contract/abi/rln.ts b/packages/rln/src/contract/abi/rln.ts
deleted file mode 100644
index 858ec25de5..0000000000
--- a/packages/rln/src/contract/abi/rln.ts
+++ /dev/null
@@ -1,646 +0,0 @@
-export const RLN_ABI = [
-  { inputs: [], stateMutability: "nonpayable", type: "constructor" },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "CannotEraseActiveMembership",
-    type: "error"
-  },
-  { inputs: [], name: "CannotExceedMaxTotalRateLimit", type: "error" },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "CannotExtendNonGracePeriodMembership",
-    type: "error"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "InvalidIdCommitment",
-    type: "error"
-  },
-  { inputs: [], name: "InvalidMembershipRateLimit", type: "error" },
-  {
-    inputs: [
-      { internalType: "uint256", name: "startIndex", type: "uint256" },
-      { internalType: "uint256", name: "endIndex", type: "uint256" }
-    ],
-    name: "InvalidPaginationQuery",
-    type: "error"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "MembershipDoesNotExist",
-    type: "error"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "NonHolderCannotEraseGracePeriodMembership",
-    type: "error"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "NonHolderCannotExtend",
-    type: "error"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: false,
-        internalType: "address",
-        name: "previousAdmin",
-        type: "address"
-      },
-      {
-        indexed: false,
-        internalType: "address",
-        name: "newAdmin",
-        type: "address"
-      }
-    ],
-    name: "AdminChanged",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: true,
-        internalType: "address",
-        name: "beacon",
-        type: "address"
-      }
-    ],
-    name: "BeaconUpgraded",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      { indexed: false, internalType: "uint8", name: "version", type: "uint8" }
-    ],
-    name: "Initialized",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "idCommitment",
-        type: "uint256"
-      },
-      {
-        indexed: false,
-        internalType: "uint32",
-        name: "membershipRateLimit",
-        type: "uint32"
-      },
-      { indexed: false, internalType: "uint32", name: "index", type: "uint32" }
-    ],
-    name: "MembershipErased",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "idCommitment",
-        type: "uint256"
-      },
-      {
-        indexed: false,
-        internalType: "uint32",
-        name: "membershipRateLimit",
-        type: "uint32"
-      },
-      { indexed: false, internalType: "uint32", name: "index", type: "uint32" }
-    ],
-    name: "MembershipExpired",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "idCommitment",
-        type: "uint256"
-      },
-      {
-        indexed: false,
-        internalType: "uint32",
-        name: "membershipRateLimit",
-        type: "uint32"
-      },
-      { indexed: false, internalType: "uint32", name: "index", type: "uint32" },
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "newGracePeriodStartTimestamp",
-        type: "uint256"
-      }
-    ],
-    name: "MembershipExtended",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "idCommitment",
-        type: "uint256"
-      },
-      {
-        indexed: false,
-        internalType: "uint256",
-        name: "membershipRateLimit",
-        type: "uint256"
-      },
-      { indexed: false, internalType: "uint32", name: "index", type: "uint32" }
-    ],
-    name: "MembershipRegistered",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: true,
-        internalType: "address",
-        name: "previousOwner",
-        type: "address"
-      },
-      {
-        indexed: true,
-        internalType: "address",
-        name: "newOwner",
-        type: "address"
-      }
-    ],
-    name: "OwnershipTransferred",
-    type: "event"
-  },
-  {
-    anonymous: false,
-    inputs: [
-      {
-        indexed: true,
-        internalType: "address",
-        name: "implementation",
-        type: "address"
-      }
-    ],
-    name: "Upgraded",
-    type: "event"
-  },
-  {
-    inputs: [],
-    name: "MAX_MEMBERSHIP_SET_SIZE",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "MERKLE_TREE_DEPTH",
-    outputs: [{ internalType: "uint8", name: "", type: "uint8" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "Q",
-    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "activeDurationForNewMemberships",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "currentTotalRateLimit",
-    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "deployedBlockNumber",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "holder", type: "address" },
-      { internalType: "address", name: "token", type: "address" }
-    ],
-    name: "depositsToWithdraw",
-    outputs: [{ internalType: "uint256", name: "balance", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256[]", name: "idCommitments", type: "uint256[]" }
-    ],
-    name: "eraseMemberships",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256[]", name: "idCommitments", type: "uint256[]" },
-      { internalType: "bool", name: "eraseFromMembershipSet", type: "bool" }
-    ],
-    name: "eraseMemberships",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256[]", name: "idCommitments", type: "uint256[]" }
-    ],
-    name: "extendMemberships",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "getMembershipInfo",
-    outputs: [
-      { internalType: "uint32", name: "", type: "uint32" },
-      { internalType: "uint32", name: "", type: "uint32" },
-      { internalType: "uint256", name: "", type: "uint256" }
-    ],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "uint40", name: "index", type: "uint40" }],
-    name: "getMerkleProof",
-    outputs: [{ internalType: "uint256[20]", name: "", type: "uint256[20]" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint32", name: "startIndex", type: "uint32" },
-      { internalType: "uint32", name: "endIndex", type: "uint32" }
-    ],
-    name: "getRateCommitmentsInRangeBoundsInclusive",
-    outputs: [{ internalType: "uint256[]", name: "", type: "uint256[]" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "gracePeriodDurationForNewMemberships",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    name: "indicesOfLazilyErasedMemberships",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "_priceCalculator", type: "address" },
-      { internalType: "uint32", name: "_maxTotalRateLimit", type: "uint32" },
-      {
-        internalType: "uint32",
-        name: "_minMembershipRateLimit",
-        type: "uint32"
-      },
-      {
-        internalType: "uint32",
-        name: "_maxMembershipRateLimit",
-        type: "uint32"
-      },
-      { internalType: "uint32", name: "_activeDuration", type: "uint32" },
-      { internalType: "uint32", name: "_gracePeriod", type: "uint32" }
-    ],
-    name: "initialize",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "_idCommitment", type: "uint256" }
-    ],
-    name: "isExpired",
-    outputs: [{ internalType: "bool", name: "", type: "bool" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "_idCommitment", type: "uint256" }
-    ],
-    name: "isInGracePeriod",
-    outputs: [{ internalType: "bool", name: "", type: "bool" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "isInMembershipSet",
-    outputs: [{ internalType: "bool", name: "", type: "bool" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "isValidIdCommitment",
-    outputs: [{ internalType: "bool", name: "", type: "bool" }],
-    stateMutability: "pure",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "uint32", name: "rateLimit", type: "uint32" }],
-    name: "isValidMembershipRateLimit",
-    outputs: [{ internalType: "bool", name: "", type: "bool" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "maxMembershipRateLimit",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "maxTotalRateLimit",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "_idCommitment", type: "uint256" }
-    ],
-    name: "membershipExpirationTimestamp",
-    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" }
-    ],
-    name: "memberships",
-    outputs: [
-      { internalType: "uint256", name: "depositAmount", type: "uint256" },
-      { internalType: "uint32", name: "activeDuration", type: "uint32" },
-      {
-        internalType: "uint256",
-        name: "gracePeriodStartTimestamp",
-        type: "uint256"
-      },
-      { internalType: "uint32", name: "gracePeriodDuration", type: "uint32" },
-      { internalType: "uint32", name: "rateLimit", type: "uint32" },
-      { internalType: "uint32", name: "index", type: "uint32" },
-      { internalType: "address", name: "holder", type: "address" },
-      { internalType: "address", name: "token", type: "address" }
-    ],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "merkleTree",
-    outputs: [
-      { internalType: "uint40", name: "maxIndex", type: "uint40" },
-      { internalType: "uint40", name: "numberOfLeaves", type: "uint40" }
-    ],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "minMembershipRateLimit",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "nextFreeIndex",
-    outputs: [{ internalType: "uint32", name: "", type: "uint32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "owner",
-    outputs: [{ internalType: "address", name: "", type: "address" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "priceCalculator",
-    outputs: [
-      { internalType: "contract IPriceCalculator", name: "", type: "address" }
-    ],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "proxiableUUID",
-    outputs: [{ internalType: "bytes32", name: "", type: "bytes32" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint256", name: "idCommitment", type: "uint256" },
-      { internalType: "uint32", name: "rateLimit", type: "uint32" },
-      {
-        internalType: "uint256[]",
-        name: "idCommitmentsToErase",
-        type: "uint256[]"
-      }
-    ],
-    name: "register",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "owner", type: "address" },
-      { internalType: "uint256", name: "deadline", type: "uint256" },
-      { internalType: "uint8", name: "v", type: "uint8" },
-      { internalType: "bytes32", name: "r", type: "bytes32" },
-      { internalType: "bytes32", name: "s", type: "bytes32" },
-      { internalType: "uint256", name: "idCommitment", type: "uint256" },
-      { internalType: "uint32", name: "rateLimit", type: "uint32" },
-      {
-        internalType: "uint256[]",
-        name: "idCommitmentsToErase",
-        type: "uint256[]"
-      }
-    ],
-    name: "registerWithPermit",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "renounceOwnership",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [],
-    name: "root",
-    outputs: [{ internalType: "uint256", name: "", type: "uint256" }],
-    stateMutability: "view",
-    type: "function"
-  },
-  {
-    inputs: [
-      {
-        internalType: "uint32",
-        name: "_activeDurationForNewMembership",
-        type: "uint32"
-      }
-    ],
-    name: "setActiveDuration",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      {
-        internalType: "uint32",
-        name: "_gracePeriodDurationForNewMembership",
-        type: "uint32"
-      }
-    ],
-    name: "setGracePeriodDuration",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      {
-        internalType: "uint32",
-        name: "_maxMembershipRateLimit",
-        type: "uint32"
-      }
-    ],
-    name: "setMaxMembershipRateLimit",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "uint32", name: "_maxTotalRateLimit", type: "uint32" }
-    ],
-    name: "setMaxTotalRateLimit",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      {
-        internalType: "uint32",
-        name: "_minMembershipRateLimit",
-        type: "uint32"
-      }
-    ],
-    name: "setMinMembershipRateLimit",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "_priceCalculator", type: "address" }
-    ],
-    name: "setPriceCalculator",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "address", name: "newOwner", type: "address" }],
-    name: "transferOwnership",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "newImplementation", type: "address" }
-    ],
-    name: "upgradeTo",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  },
-  {
-    inputs: [
-      { internalType: "address", name: "newImplementation", type: "address" },
-      { internalType: "bytes", name: "data", type: "bytes" }
-    ],
-    name: "upgradeToAndCall",
-    outputs: [],
-    stateMutability: "payable",
-    type: "function"
-  },
-  {
-    inputs: [{ internalType: "address", name: "token", type: "address" }],
-    name: "withdraw",
-    outputs: [],
-    stateMutability: "nonpayable",
-    type: "function"
-  }
-];
diff --git a/packages/rln/src/contract/constants.ts b/packages/rln/src/contract/constants.ts
index 7869e65bc6..9e895424d1 100644
--- a/packages/rln/src/contract/constants.ts
+++ b/packages/rln/src/contract/constants.ts
@@ -1,16 +1,15 @@
-import { PRICE_CALCULATOR_ABI } from "./abi/price_calculator.js";
-import { RLN_ABI } from "./abi/rln.js";
+import { linearPriceCalculatorAbi, wakuRlnV2Abi } from "./wagmi/generated.js";
 
 export const RLN_CONTRACT = {
   chainId: 59141,
   address: "0xb9cd878c90e49f797b4431fbf4fb333108cb90e6",
-  abi: RLN_ABI
+  abi: wakuRlnV2Abi
 };
 
 export const PRICE_CALCULATOR_CONTRACT = {
   chainId: 59141,
   address: "0xBcfC0660Df69f53ab409F32bb18A3fb625fcE644",
-  abi: PRICE_CALCULATOR_ABI
+  abi: linearPriceCalculatorAbi
 };
 
 /**
diff --git a/packages/rln/src/contract/price_calculator.spec.ts b/packages/rln/src/contract/price_calculator.spec.ts
index 2b36585509..e2fa53b1ec 100644
--- a/packages/rln/src/contract/price_calculator.spec.ts
+++ b/packages/rln/src/contract/price_calculator.spec.ts
@@ -1,28 +1,39 @@
 import { expect, use } from "chai";
 import chaiAsPromised from "chai-as-promised";
-import { ethers } from "ethers";
 import sinon from "sinon";
 
 import { RLNBaseContract } from "./rln_base_contract.js";
 
 use(chaiAsPromised);
 
-function createMockRLNBaseContract(provider: any): RLNBaseContract {
+function createMockRLNBaseContract(
+  mockContract: any,
+  mockRpcClient: any
+): RLNBaseContract {
   const dummy = Object.create(RLNBaseContract.prototype);
-  dummy.contract = { provider };
+  dummy.contract = mockContract;
+  dummy.rpcClient = mockRpcClient;
   return dummy as RLNBaseContract;
 }
 
 describe("RLNBaseContract.getPriceForRateLimit (unit)", function () {
-  let provider: any;
-  let calculateStub: sinon.SinonStub;
-  let mockContractFactory: any;
+  let mockContract: any;
+  let mockRpcClient: any;
+  let priceCalculatorReadStub: sinon.SinonStub;
+  let readContractStub: sinon.SinonStub;
 
   beforeEach(() => {
-    provider = {};
-    calculateStub = sinon.stub();
-    mockContractFactory = function () {
-      return { calculate: calculateStub };
+    priceCalculatorReadStub = sinon.stub();
+    readContractStub = sinon.stub();
+
+    mockContract = {
+      read: {
+        priceCalculator: priceCalculatorReadStub
+      }
+    };
+
+    mockRpcClient = {
+      readContract: readContractStub
     };
   });
 
@@ -32,35 +43,53 @@ describe("RLNBaseContract.getPriceForRateLimit (unit)", function () {
 
   it("returns token and price for valid calculate", async () => {
     const fakeToken = "0x1234567890abcdef1234567890abcdef12345678";
-    const fakePrice = ethers.BigNumber.from(42);
-    calculateStub.resolves([fakeToken, fakePrice]);
+    const fakePrice = 42n;
+    const priceCalculatorAddress = "0xabcdef1234567890abcdef1234567890abcdef12";
+
+    priceCalculatorReadStub.resolves(priceCalculatorAddress);
+    readContractStub.resolves([fakeToken, fakePrice]);
+
+    const rlnBase = createMockRLNBaseContract(mockContract, mockRpcClient);
+    const result = await rlnBase.getPriceForRateLimit(20);
 
-    const rlnBase = createMockRLNBaseContract(provider);
-    const result = await rlnBase.getPriceForRateLimit(20, mockContractFactory);
     expect(result.token).to.equal(fakeToken);
-    expect(result.price).to.not.be.null;
-    if (result.price) {
-      expect(result.price.eq(fakePrice)).to.be.true;
-    }
-    expect(calculateStub.calledOnceWith(20)).to.be.true;
+    expect(result.price).to.equal(fakePrice);
+    expect(priceCalculatorReadStub.calledOnce).to.be.true;
+    expect(readContractStub.calledOnce).to.be.true;
+
+    const readContractCall = readContractStub.getCall(0);
+    expect(readContractCall.args[0]).to.deep.include({
+      address: priceCalculatorAddress,
+      functionName: "calculate",
+      args: [20]
+    });
   });
 
   it("throws if calculate throws", async () => {
-    calculateStub.rejects(new Error("fail"));
+    const priceCalculatorAddress = "0xabcdef1234567890abcdef1234567890abcdef12";
+
+    priceCalculatorReadStub.resolves(priceCalculatorAddress);
+    readContractStub.rejects(new Error("fail"));
+
+    const rlnBase = createMockRLNBaseContract(mockContract, mockRpcClient);
+    await expect(rlnBase.getPriceForRateLimit(20)).to.be.rejectedWith("fail");
 
-    const rlnBase = createMockRLNBaseContract(provider);
-    await expect(
-      rlnBase.getPriceForRateLimit(20, mockContractFactory)
-    ).to.be.rejectedWith("fail");
-    expect(calculateStub.calledOnceWith(20)).to.be.true;
+    expect(priceCalculatorReadStub.calledOnce).to.be.true;
+    expect(readContractStub.calledOnce).to.be.true;
   });
 
-  it("throws if calculate returns malformed data", async () => {
-    calculateStub.resolves([null, null]);
+  it("returns null values if calculate returns malformed data", async () => {
+    const priceCalculatorAddress = "0xabcdef1234567890abcdef1234567890abcdef12";
+
+    priceCalculatorReadStub.resolves(priceCalculatorAddress);
+    readContractStub.resolves([null, null]);
+
+    const rlnBase = createMockRLNBaseContract(mockContract, mockRpcClient);
+    const result = await rlnBase.getPriceForRateLimit(20);
 
-    const rlnBase = createMockRLNBaseContract(provider);
-    const result = await rlnBase.getPriceForRateLimit(20, mockContractFactory);
     expect(result.token).to.be.null;
     expect(result.price).to.be.null;
+    expect(priceCalculatorReadStub.calledOnce).to.be.true;
+    expect(readContractStub.calledOnce).to.be.true;
   });
 });
diff --git a/packages/rln/src/contract/rln_base_contract.ts b/packages/rln/src/contract/rln_base_contract.ts
index 9934360be3..75c4f7a4ef 100644
--- a/packages/rln/src/contract/rln_base_contract.ts
+++ b/packages/rln/src/contract/rln_base_contract.ts
@@ -1,92 +1,74 @@
 import { Logger } from "@waku/utils";
-import { ethers } from "ethers";
+import {
+  type Address,
+  decodeEventLog,
+  getContract,
+  type GetContractReturnType,
+  type Hash,
+  type PublicClient,
+  type WalletClient
+} from "viem";
 
 import { IdentityCredential } from "../identity.js";
-import { DecryptedCredentials } from "../keystore/types.js";
+import type { DecryptedCredentials } from "../keystore/types.js";
+import type { RpcClient } from "../utils/index.js";
 
-import { RLN_ABI } from "./abi/rln.js";
 import {
   DEFAULT_RATE_LIMIT,
-  PRICE_CALCULATOR_CONTRACT,
-  RATE_LIMIT_PARAMS
+  RATE_LIMIT_PARAMS,
+  RLN_CONTRACT
 } from "./constants.js";
 import {
-  CustomQueryOptions,
-  FetchMembersOptions,
-  Member,
   MembershipInfo,
-  MembershipRegisteredEvent,
   MembershipState,
-  RLNContractInitOptions
+  RLNContractOptions
 } from "./types.js";
+import { iPriceCalculatorAbi, wakuRlnV2Abi } from "./wagmi/generated.js";
 
 const log = new Logger("rln:contract:base");
 
 export class RLNBaseContract {
-  public contract: ethers.Contract;
-  private deployBlock: undefined | number;
+  public contract: GetContractReturnType<
+    typeof wakuRlnV2Abi,
+    PublicClient | WalletClient
+  >;
+  public rpcClient: RpcClient;
   private rateLimit: number;
   private minRateLimit?: number;
   private maxRateLimit?: number;
 
-  protected _members: Map<number, Member> = new Map();
-  private _membersFilter: ethers.EventFilter;
-  private _membershipErasedFilter: ethers.EventFilter;
-  private _membersExpiredFilter: ethers.EventFilter;
-
   /**
    * Private constructor for RLNBaseContract. Use static create() instead.
    */
-  protected constructor(options: RLNContractInitOptions) {
-    const {
-      address,
-      signer,
-      rateLimit = DEFAULT_RATE_LIMIT,
-      contract
-    } = options;
+  protected constructor(options: RLNContractOptions) {
+    const { address, rpcClient, rateLimit = DEFAULT_RATE_LIMIT } = options;
 
     log.info("Initializing RLNBaseContract", { address, rateLimit });
 
-    this.contract = contract || new ethers.Contract(address, RLN_ABI, signer);
+    this.rpcClient = rpcClient;
+    this.contract = getContract({
+      address,
+      abi: wakuRlnV2Abi,
+      client: this.rpcClient
+    });
     this.rateLimit = rateLimit;
-
-    try {
-      log.info("Setting up event filters");
-      // Initialize event filters
-      this._membersFilter = this.contract.filters.MembershipRegistered();
-      this._membershipErasedFilter = this.contract.filters.MembershipErased();
-      this._membersExpiredFilter = this.contract.filters.MembershipExpired();
-      log.info("Event filters initialized successfully");
-    } catch (error) {
-      log.error("Failed to initialize event filters", { error });
-      throw new Error(
-        "Failed to initialize event filters: " + (error as Error).message
-      );
-    }
-
-    // Initialize members and subscriptions
-    this.fetchMembers()
-      .then(() => {
-        this.subscribeToMembers();
-      })
-      .catch((error) => {
-        log.error("Failed to initialize members", { error });
-      });
   }
 
   /**
    * Static async factory to create and initialize RLNBaseContract
    */
   public static async create(
-    options: RLNContractInitOptions
+    options: RLNContractOptions
   ): Promise<RLNBaseContract> {
     const instance = new RLNBaseContract(options);
+
     const [min, max] = await Promise.all([
-      instance.contract.minMembershipRateLimit(),
-      instance.contract.maxMembershipRateLimit()
+      instance.contract.read.minMembershipRateLimit(),
+      instance.contract.read.maxMembershipRateLimit()
     ]);
-    instance.minRateLimit = ethers.BigNumber.from(min).toNumber();
-    instance.maxRateLimit = ethers.BigNumber.from(max).toNumber();
+
+    instance.minRateLimit = min;
+    instance.maxRateLimit = max;
 
     instance.validateRateLimit(instance.rateLimit);
     return instance;
@@ -106,13 +88,6 @@ export class RLNBaseContract {
     return this.contract.address;
   }
 
-  /**
-   * Gets the contract provider
-   */
-  public get provider(): ethers.providers.Provider {
-    return this.contract.provider;
-  }
-
   /**
    * Gets the minimum allowed rate limit (cached)
    */
@@ -136,8 +111,7 @@ export class RLNBaseContract {
    * @returns Promise<number> The maximum total rate limit in messages per epoch
    */
   public async getMaxTotalRateLimit(): Promise<number> {
-    const maxTotalRate = await this.contract.maxTotalRateLimit();
-    return maxTotalRate.toNumber();
+    return await this.contract.read.maxTotalRateLimit();
   }
 
   /**
@@ -145,8 +119,7 @@ export class RLNBaseContract {
    * @returns Promise<number> The current total rate limit usage in messages per epoch
    */
   public async getCurrentTotalRateLimit(): Promise<number> {
-    const currentTotal = await this.contract.currentTotalRateLimit();
-    return currentTotal.toNumber();
+    return Number(await this.contract.read.currentTotalRateLimit());
   }
 
   /**
@@ -154,11 +127,10 @@ export class RLNBaseContract {
    * @returns Promise<number> The remaining rate limit that can be allocated
    */
   public async getRemainingTotalRateLimit(): Promise<number> {
-    const [maxTotal, currentTotal] = await Promise.all([
-      this.contract.maxTotalRateLimit(),
-      this.contract.currentTotalRateLimit()
-    ]);
-    return Number(maxTotal) - Number(currentTotal);
+    return (
+      (await this.contract.read.maxTotalRateLimit()) -
+      Number(await this.contract.read.currentTotalRateLimit())
+    );
   }
 
   /**
@@ -170,233 +142,35 @@ export class RLNBaseContract {
     this.rateLimit = newRateLimit;
   }
 
-  public get members(): Member[] {
-    const sortedMembers = Array.from(this._members.values()).sort(
-      (left, right) => left.index.toNumber() - right.index.toNumber()
-    );
-    return sortedMembers;
-  }
-
-  public async fetchMembers(options: FetchMembersOptions = {}): Promise<void> {
-    const registeredMemberEvents = await RLNBaseContract.queryFilter(
-      this.contract,
-      {
-        fromBlock: this.deployBlock,
-        ...options,
-        membersFilter: this.membersFilter
-      }
-    );
-    const removedMemberEvents = await RLNBaseContract.queryFilter(
-      this.contract,
-      {
-        fromBlock: this.deployBlock,
-        ...options,
-        membersFilter: this.membershipErasedFilter
-      }
-    );
-    const expiredMemberEvents = await RLNBaseContract.queryFilter(
-      this.contract,
-      {
-        fromBlock: this.deployBlock,
-        ...options,
-        membersFilter: this.membersExpiredFilter
-      }
-    );
-
-    const events = [
-      ...registeredMemberEvents,
-      ...removedMemberEvents,
-      ...expiredMemberEvents
-    ];
-    this.processEvents(events);
-  }
-
-  public static async queryFilter(
-    contract: ethers.Contract,
-    options: CustomQueryOptions
-  ): Promise<ethers.Event[]> {
-    const FETCH_CHUNK = 5;
-    const BLOCK_RANGE = 3000;
-
-    const {
-      fromBlock,
-      membersFilter,
-      fetchRange = BLOCK_RANGE,
-      fetchChunks = FETCH_CHUNK
-    } = options;
-
-    if (fromBlock === undefined) {
-      return contract.queryFilter(membersFilter);
-    }
-
-    if (!contract.provider) {
-      throw Error("No provider found on the contract.");
-    }
-
-    const toBlock = await contract.provider.getBlockNumber();
-
-    if (toBlock - fromBlock < fetchRange) {
-      return contract.queryFilter(membersFilter, fromBlock, toBlock);
-    }
-
-    const events: ethers.Event[][] = [];
-    const chunks = RLNBaseContract.splitToChunks(
-      fromBlock,
-      toBlock,
-      fetchRange
-    );
-
-    for (const portion of RLNBaseContract.takeN<[number, number]>(
-      chunks,
-      fetchChunks
-    )) {
-      const promises = portion.map(([left, right]) =>
-        RLNBaseContract.ignoreErrors(
-          contract.queryFilter(membersFilter, left, right),
-          []
-        )
-      );
-      const fetchedEvents = await Promise.all(promises);
-      events.push(fetchedEvents.flatMap((v) => v));
-    }
-
-    return events.flatMap((v) => v);
-  }
-
-  public processEvents(events: ethers.Event[]): void {
-    const toRemoveTable = new Map<number, number[]>();
-    const toInsertTable = new Map<number, ethers.Event[]>();
-
-    events.forEach((evt) => {
-      if (!evt.args) {
-        return;
-      }
-
-      if (
-        evt.event === "MembershipErased" ||
-        evt.event === "MembershipExpired"
-      ) {
-        let index = evt.args.index;
-
-        if (!index) {
-          return;
-        }
-
-        if (typeof index === "number" || typeof index === "string") {
-          index = ethers.BigNumber.from(index);
-        }
-
-        const toRemoveVal = toRemoveTable.get(evt.blockNumber);
-        if (toRemoveVal != undefined) {
-          toRemoveVal.push(index.toNumber());
-          toRemoveTable.set(evt.blockNumber, toRemoveVal);
-        } else {
-          toRemoveTable.set(evt.blockNumber, [index.toNumber()]);
-        }
-      } else if (evt.event === "MembershipRegistered") {
-        let eventsPerBlock = toInsertTable.get(evt.blockNumber);
-        if (eventsPerBlock == undefined) {
-          eventsPerBlock = [];
-        }
-
-        eventsPerBlock.push(evt);
-        toInsertTable.set(evt.blockNumber, eventsPerBlock);
-      }
-    });
-  }
-
-  public static splitToChunks(
-    from: number,
-    to: number,
-    step: number
-  ): Array<[number, number]> {
-    const chunks: Array<[number, number]> = [];
-
-    let left = from;
-    while (left < to) {
-      const right = left + step < to ? left + step : to;
-
-      chunks.push([left, right] as [number, number]);
-
-      left = right;
-    }
-
-    return chunks;
-  }
-
-  public static *takeN<T>(array: T[], size: number): Iterable<T[]> {
-    let start = 0;
-
-    while (start < array.length) {
-      const portion = array.slice(start, start + size);
-
-      yield portion;
-
-      start += size;
-    }
-  }
-
-  public static async ignoreErrors<T>(
-    promise: Promise<T>,
-    defaultValue: T
-  ): Promise<T> {
-    try {
-      return await promise;
-    } catch (err: unknown) {
-      if (err instanceof Error) {
-        log.info(`Ignoring an error during query: ${err.message}`);
-      } else {
-        log.info(`Ignoring an unknown error during query`);
-      }
-      return defaultValue;
-    }
+  /**
+   * Gets the Merkle tree root for RLN proof verification
+   * @returns Promise<bigint> The Merkle tree root
+   *
+   */
+  public async getMerkleRoot(): Promise<bigint> {
+    return this.contract.read.root();
   }
 
-  public subscribeToMembers(): void {
-    this.contract.on(
-      this.membersFilter,
-      (
-        _idCommitment: bigint,
-        _membershipRateLimit: ethers.BigNumber,
-        _index: ethers.BigNumber,
-        event: ethers.Event
-      ) => {
-        this.processEvents([event]);
-      }
-    );
-
-    this.contract.on(
-      this.membershipErasedFilter,
-      (
-        _idCommitment: bigint,
-        _membershipRateLimit: ethers.BigNumber,
-        _index: ethers.BigNumber,
-        event: ethers.Event
-      ) => {
-        this.processEvents([event]);
-      }
-    );
-
-    this.contract.on(
-      this.membersExpiredFilter,
-      (
-        _idCommitment: bigint,
-        _membershipRateLimit: ethers.BigNumber,
-        _index: ethers.BigNumber,
-        event: ethers.Event
-      ) => {
-        this.processEvents([event]);
-      }
-    );
+  /**
+   * Gets the Merkle proof for a member at a given index
+   * @param index The index of the member in the membership set
+   * @returns Promise<bigint[]> Array of 20 Merkle proof elements
+   *
+   */
+  public async getMerkleProof(index: number): Promise<readonly bigint[]> {
+    return await this.contract.read.getMerkleProof([index]);
   }
 
   public async getMembershipInfo(
     idCommitmentBigInt: bigint
   ): Promise<MembershipInfo | undefined> {
     try {
-      const membershipData =
-        await this.contract.memberships(idCommitmentBigInt);
-      const currentBlock = await this.contract.provider.getBlockNumber();
+      const membershipData = await this.contract.read.memberships([
+        idCommitmentBigInt
+      ]);
+
+      const currentBlock = await this.rpcClient.getBlockNumber();
+
       const [
         depositAmount,
         activeDuration,
@@ -408,12 +182,13 @@ export class RLNBaseContract {
         token
       ] = membershipData;
 
-      const gracePeriodEnd = gracePeriodStartTimestamp.add(gracePeriodDuration);
+      const gracePeriodEnd =
+        Number(gracePeriodStartTimestamp) + Number(gracePeriodDuration);
 
       let state: MembershipState;
-      if (currentBlock < gracePeriodStartTimestamp.toNumber()) {
+      if (currentBlock < Number(gracePeriodStartTimestamp)) {
         state = MembershipState.Active;
-      } else if (currentBlock < gracePeriodEnd.toNumber()) {
+      } else if (currentBlock < gracePeriodEnd) {
         state = MembershipState.GracePeriod;
       } else {
         state = MembershipState.Expired;
@@ -422,9 +197,9 @@ export class RLNBaseContract {
       return {
         index,
         idCommitment: idCommitmentBigInt.toString(),
-        rateLimit: Number(rateLimit),
-        startBlock: gracePeriodStartTimestamp.toNumber(),
-        endBlock: gracePeriodEnd.toNumber(),
+        rateLimit: rateLimit,
+        startBlock: Number(gracePeriodStartTimestamp),
+        endBlock: gracePeriodEnd,
         state,
         depositAmount,
         activeDuration,
@@ -438,43 +213,75 @@ export class RLNBaseContract {
     }
   }
 
-  public async extendMembership(
-    idCommitmentBigInt: bigint
-  ): Promise<ethers.ContractTransaction> {
-    const tx = await this.contract.extendMemberships([idCommitmentBigInt]);
-    await tx.wait();
-    return tx;
+  public async extendMembership(idCommitmentBigInt: bigint): Promise<Hash> {
+    if (!this.rpcClient.account) {
+      throw new Error(
+        "Failed to extendMembership: no account set in wallet client"
+      );
+    }
+    try {
+      await this.contract.simulate.extendMemberships([[idCommitmentBigInt]], {
+        chain: this.rpcClient.chain,
+        account: this.rpcClient.account.address
+      });
+    } catch (err) {
+      throw new Error("Simulating extending membership failed: " + err);
+    }
+    const hash = await this.contract.write.extendMemberships(
+      [[idCommitmentBigInt]],
+      {
+        account: this.rpcClient.account,
+        chain: this.rpcClient.chain
+      }
+    );
+
+    await this.rpcClient.waitForTransactionReceipt({ hash });
+    return hash;
   }
 
   public async eraseMembership(
     idCommitmentBigInt: bigint,
     eraseFromMembershipSet: boolean = true
-  ): Promise<ethers.ContractTransaction> {
+  ): Promise<Hash> {
     if (
       !(await this.isExpired(idCommitmentBigInt)) ||
       !(await this.isInGracePeriod(idCommitmentBigInt))
     ) {
       throw new Error("Membership is not expired or in grace period");
     }
+    if (!this.rpcClient.account) {
+      throw new Error(
+        "Failed to eraseMembership: no account set in wallet client"
+      );
+    }
 
-    const estimatedGas = await this.contract.estimateGas[
-      "eraseMemberships(uint256[],bool)"
-    ]([idCommitmentBigInt], eraseFromMembershipSet);
-    const gasLimit = estimatedGas.add(10000);
+    try {
+      await this.contract.simulate.eraseMemberships(
+        [[idCommitmentBigInt], eraseFromMembershipSet],
+        {
+          chain: this.rpcClient.chain,
+          account: this.rpcClient.account.address
+        }
+      );
+    } catch (err) {
+      throw new Error("Error simulating eraseMemberships: " + err);
+    }
 
-    const tx = await this.contract["eraseMemberships(uint256[],bool)"](
-      [idCommitmentBigInt],
-      eraseFromMembershipSet,
-      { gasLimit }
+    const hash = await this.contract.write.eraseMemberships(
+      [[idCommitmentBigInt], eraseFromMembershipSet],
+      {
+        chain: this.rpcClient.chain,
+        account: this.rpcClient.account
+      }
     );
-    await tx.wait();
-    return tx;
+    await this.rpcClient.waitForTransactionReceipt({ hash });
+    return hash;
   }
 
   public async registerMembership(
     idCommitmentBigInt: bigint,
     rateLimit: number = DEFAULT_RATE_LIMIT
-  ): Promise<ethers.ContractTransaction> {
+  ): Promise<Hash> {
     if (
       rateLimit < RATE_LIMIT_PARAMS.MIN_RATE ||
       rateLimit > RATE_LIMIT_PARAMS.MAX_RATE
@@ -483,21 +290,72 @@ export class RLNBaseContract {
         `Rate limit must be between ${RATE_LIMIT_PARAMS.MIN_RATE} and ${RATE_LIMIT_PARAMS.MAX_RATE}`
       );
     }
-    return this.contract.register(idCommitmentBigInt, rateLimit, []);
+    if (!this.rpcClient.account) {
+      throw new Error(
+        "Failed to registerMembership: no account set in wallet client"
+      );
+    }
+    try {
+      await this.contract.simulate.register(
+        [idCommitmentBigInt, rateLimit, []],
+        {
+          chain: this.rpcClient.chain,
+          account: this.rpcClient.account.address
+        }
+      );
+    } catch (err) {
+      throw new Error("Failed to simulate register membership: " + err);
+    }
+
+    const hash = await this.contract.write.register(
+      [idCommitmentBigInt, rateLimit, []],
+      {
+        chain: this.rpcClient.chain,
+        account: this.rpcClient.account
+      }
+    );
+    await this.rpcClient.waitForTransactionReceipt({ hash });
+    return hash;
   }
 
-  public async withdraw(token: string, walletAddress: string): Promise<void> {
+  /**
+   * Withdraw deposited tokens after membership is erased.
+   * The smart contract validates that the sender is the holder of the membership,
+   * and will only send tokens to that address.
+   * @param token - Token address to withdraw
+   */
+  public async withdraw(token: string): Promise<Hash> {
+    if (!this.rpcClient.account) {
+      throw new Error("Failed to withdraw: no account set in wallet client");
+    }
+
     try {
-      const tx = await this.contract.withdraw(token, walletAddress);
-      await tx.wait();
-    } catch (error) {
-      log.error(`Error in withdraw: ${(error as Error).message}`);
+      await this.contract.simulate.withdraw([token as Address], {
+        chain: this.rpcClient.chain,
+        account: this.rpcClient.account.address
+      });
+    } catch (err) {
+      throw new Error("Error simulating withdraw: " + err);
     }
+
+    const hash = await this.contract.write.withdraw([token as Address], {
+      chain: this.rpcClient.chain,
+      account: this.rpcClient.account
+    });
+
+    await this.rpcClient.waitForTransactionReceipt({ hash });
+    return hash;
   }
   public async registerWithIdentity(
     identity: IdentityCredential
   ): Promise<DecryptedCredentials | undefined> {
     try {
+      if (!this.rpcClient.account) {
+        throw new Error(
+          "Failed to registerWithIdentity: no account set in wallet client"
+        );
+      }
+
       log.info(
         `Registering identity with rate limit: ${this.rateLimit} messages/epoch`
       );
@@ -520,62 +378,71 @@ export class RLNBaseContract {
         );
       }
 
-      const estimatedGas = await this.contract.estimateGas.register(
-        identity.IDCommitmentBigInt,
-        this.rateLimit,
-        []
+      await this.contract.simulate.register(
+        [identity.IDCommitmentBigInt, this.rateLimit, []],
+        {
+          chain: this.rpcClient.chain,
+          account: this.rpcClient.account.address
+        }
+      );
+
+      const hash: Hash = await this.contract.write.register(
+        [identity.IDCommitmentBigInt, this.rateLimit, []],
+        {
+          chain: this.rpcClient.chain,
+          account: this.rpcClient.account
+        }
       );
-      const gasLimit = estimatedGas.add(10000);
-
-      const txRegisterResponse: ethers.ContractTransaction =
-        await this.contract.register(
-          identity.IDCommitmentBigInt,
-          this.rateLimit,
-          [],
-          {
-            gasLimit
-          }
-        );
 
-      const txRegisterReceipt = await txRegisterResponse.wait();
+      const txRegisterReceipt = await this.rpcClient.waitForTransactionReceipt({
+        hash
+      });
 
-      if (txRegisterReceipt.status === 0) {
+      if (txRegisterReceipt.status === "reverted") {
         throw new Error("Transaction failed on-chain");
       }
 
-      const memberRegistered = txRegisterReceipt.events?.find(
-        (event: ethers.Event) => event.event === "MembershipRegistered"
-      );
+      // Parse MembershipRegistered event from logs
+      const memberRegisteredLog = txRegisterReceipt.logs.find((log) => {
+        try {
+          const decoded = decodeEventLog({
+            abi: wakuRlnV2Abi,
+            data: log.data,
+            topics: log.topics
+          });
+          return decoded.eventName === "MembershipRegistered";
+        } catch {
+          return false;
+        }
+      });
 
-      if (!memberRegistered || !memberRegistered.args) {
+      if (!memberRegisteredLog) {
         log.error(
           "Failed to register membership: No MembershipRegistered event found"
         );
         return undefined;
       }
 
-      const decodedData: MembershipRegisteredEvent = {
-        idCommitment: memberRegistered.args.idCommitment,
-        membershipRateLimit: memberRegistered.args.membershipRateLimit,
-        index: memberRegistered.args.index
-      };
+      // Decode the event
+      const decoded = decodeEventLog({
+        abi: wakuRlnV2Abi,
+        data: memberRegisteredLog.data,
+        topics: memberRegisteredLog.topics,
+        eventName: "MembershipRegistered"
+      });
 
       log.info(
-        `Successfully registered membership with index ${decodedData.index} ` +
-          `and rate limit ${decodedData.membershipRateLimit}`
+        `Successfully registered membership with index ${decoded.args.index} ` +
+          `and rate limit ${decoded.args.membershipRateLimit}`
       );
 
-      const network = await this.contract.provider.getNetwork();
-      const address = this.contract.address;
-      const membershipId = Number(decodedData.index);
-
       return {
         identity,
         membership: {
-          address,
-          treeIndex: membershipId,
-          chainId: network.chainId.toString(),
-          rateLimit: decodedData.membershipRateLimit.toNumber()
+          address: this.contract.address,
+          treeIndex: decoded.args.index,
+          chainId: String(RLN_CONTRACT.chainId),
+          rateLimit: Number(decoded.args.membershipRateLimit)
         }
       };
     } catch (error) {
@@ -608,78 +475,6 @@ export class RLNBaseContract {
     }
   }
 
-  public async registerWithPermitAndErase(
-    identity: IdentityCredential,
-    permit: {
-      owner: string;
-      deadline: number;
-      v: number;
-      r: string;
-      s: string;
-    },
-    idCommitmentsToErase: string[]
-  ): Promise<DecryptedCredentials | undefined> {
-    try {
-      log.info(
-        `Registering identity with permit and rate limit: ${this.rateLimit} messages/epoch`
-      );
-
-      const txRegisterResponse: ethers.ContractTransaction =
-        await this.contract.registerWithPermit(
-          permit.owner,
-          permit.deadline,
-          permit.v,
-          permit.r,
-          permit.s,
-          identity.IDCommitmentBigInt,
-          this.rateLimit,
-          idCommitmentsToErase.map((id) => ethers.BigNumber.from(id))
-        );
-      const txRegisterReceipt = await txRegisterResponse.wait();
-
-      const memberRegistered = txRegisterReceipt.events?.find(
-        (event: ethers.Event) => event.event === "MembershipRegistered"
-      );
-
-      if (!memberRegistered || !memberRegistered.args) {
-        log.error(
-          "Failed to register membership with permit: No MembershipRegistered event found"
-        );
-        return undefined;
-      }
-
-      const decodedData: MembershipRegisteredEvent = {
-        idCommitment: memberRegistered.args.idCommitment,
-        membershipRateLimit: memberRegistered.args.membershipRateLimit,
-        index: memberRegistered.args.index
-      };
-
-      log.info(
-        `Successfully registered membership with permit. Index: ${decodedData.index}, ` +
-          `Rate limit: ${decodedData.membershipRateLimit}, Erased ${idCommitmentsToErase.length} commitments`
-      );
-
-      const network = await this.contract.provider.getNetwork();
-      const address = this.contract.address;
-      const membershipId = Number(decodedData.index);
-
-      return {
-        identity,
-        membership: {
-          address,
-          treeIndex: membershipId,
-          chainId: network.chainId.toString(),
-          rateLimit: decodedData.membershipRateLimit.toNumber()
-        }
-      };
-    } catch (error) {
-      log.error(
-        `Error in registerWithPermitAndErase: ${(error as Error).message}`
-      );
-      return undefined;
-    }
-  }
-
   /**
    * Validates that the rate limit is within the allowed range (sync)
    * @throws Error if the rate limit is outside the allowed range
@@ -695,50 +490,17 @@ export class RLNBaseContract {
     }
   }
 
-  private get membersFilter(): ethers.EventFilter {
-    if (!this._membersFilter) {
-      throw Error("Members filter was not initialized.");
-    }
-    return this._membersFilter;
-  }
-
-  private get membershipErasedFilter(): ethers.EventFilter {
-    if (!this._membershipErasedFilter) {
-      throw Error("MembershipErased filter was not initialized.");
-    }
-    return this._membershipErasedFilter;
-  }
-
-  private get membersExpiredFilter(): ethers.EventFilter {
-    if (!this._membersExpiredFilter) {
-      throw Error("MembersExpired filter was not initialized.");
-    }
-    return this._membersExpiredFilter;
-  }
-
-  private async getMemberIndex(
-    idCommitmentBigInt: bigint
-  ): Promise<ethers.BigNumber | undefined> {
-    try {
-      const events = await this.contract.queryFilter(
-        this.contract.filters.MembershipRegistered(idCommitmentBigInt)
-      );
-      if (events.length === 0) return undefined;
-
-      // Get the most recent registration event
-      const event = events[events.length - 1];
-      return event.args?.index;
-    } catch (error) {
-      return undefined;
-    }
+  private async getMemberIndex(idCommitmentBigInt: bigint): Promise<number> {
+    // Current version of the contract has the index at position 5 in the membership struct
+    return (await this.contract.read.memberships([idCommitmentBigInt]))[5];
   }
 
   public async getMembershipStatus(
     idCommitment: bigint
   ): Promise<"expired" | "grace" | "active"> {
     const [isExpired, isInGrace] = await Promise.all([
-      this.contract.isExpired(idCommitment),
-      this.contract.isInGracePeriod(idCommitment)
+      this.contract.read.isExpired([idCommitment]),
+      this.contract.read.isInGracePeriod([idCommitment])
     ]);
 
     if (isExpired) return "expired";
@@ -753,7 +515,7 @@ export class RLNBaseContract {
    */
   public async isExpired(idCommitmentBigInt: bigint): Promise<boolean> {
     try {
-      return await this.contract.isExpired(idCommitmentBigInt);
+      return await this.contract.read.isExpired([idCommitmentBigInt]);
     } catch (error) {
       log.error("Error in isExpired:", error);
       return false;
@@ -767,7 +529,7 @@ export class RLNBaseContract {
    */
   public async isInGracePeriod(idCommitmentBigInt: bigint): Promise<boolean> {
     try {
-      return await this.contract.isInGracePeriod(idCommitmentBigInt);
+      return await this.contract.read.isInGracePeriod([idCommitmentBigInt]);
     } catch (error) {
       log.error("Error in isInGracePeriod:", error);
       return false;
@@ -779,21 +541,18 @@ export class RLNBaseContract {
    * @param rateLimit The rate limit to calculate the price for
    * @param contractFactory Optional factory for creating the contract (for testing)
    */
-  public async getPriceForRateLimit(
-    rateLimit: number,
-    contractFactory?: typeof import("ethers").Contract
-  ): Promise<{
+  public async getPriceForRateLimit(rateLimit: number): Promise<{
     token: string | null;
-    price: import("ethers").BigNumber | null;
+    price: bigint | null;
   }> {
-    const provider = this.contract.provider;
-    const ContractCtor = contractFactory || ethers.Contract;
-    const priceCalculator = new ContractCtor(
-      PRICE_CALCULATOR_CONTRACT.address,
-      PRICE_CALCULATOR_CONTRACT.abi,
-      provider
-    );
-    const [token, price] = await priceCalculator.calculate(rateLimit);
+    const address = await this.contract.read.priceCalculator();
+    const [token, price] = await this.rpcClient.readContract({
+      address,
+      abi: iPriceCalculatorAbi,
+      functionName: "calculate",
+      args: [rateLimit]
+    });
+
     // Defensive: if token or price is null/undefined, return nulls
     if (!token || !price) {
       return { token: null, price: null };
diff --git a/packages/rln/src/contract/token.ts b/packages/rln/src/contract/token.ts
new file mode 100644
index 0000000000..7c28fe7f4a
--- /dev/null
+++ b/packages/rln/src/contract/token.ts
@@ -0,0 +1,98 @@
+import { type Address, formatUnits, PublicClient, WalletClient } from "viem";
+
+/**
+ * Minimal ERC20 ABI containing only the functions we need
+ */
+export const erc20Abi = [
+  {
+    type: "function",
+    inputs: [{ name: "account", internalType: "address", type: "address" }],
+    name: "balanceOf",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "decimals",
+    outputs: [{ name: "", internalType: "uint8", type: "uint8" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "symbol",
+    outputs: [{ name: "", internalType: "string", type: "string" }],
+    stateMutability: "view"
+  }
+] as const;
+
+export interface TokenBalance {
+  /** Raw balance as bigint */
+  raw: bigint;
+  /** Formatted balance as string (e.g., "100.5") */
+  formatted: string;
+  /** Token decimals */
+  decimals: number;
+  /** Token symbol (if available) */
+  symbol?: string;
+  /** User's wallet address */
+  userAddress: Address;
+}
+
+/**
+ * Gets the token balance for the connected wallet
+ * @param walletClient The viem wallet client with a connected account
+ * @param publicClient The viem public client for reading contract state
+ * @param tokenAddress The ERC20 token contract address
+ * @returns Promise<TokenBalance> The token balance information
+ * @throws Error if no account is connected to the wallet client
+ *
+ * @example
+ * ```typescript
+ * const { walletClient, publicClient } = await createViemClientsFromWindow();
+ * const balance = await getTokenBalance(walletClient, publicClient, "0x...");
+ * console.log(`Balance: ${balance.formatted} ${balance.symbol}`);
+ * ```
+ */
+export async function getTokenBalance(
+  walletClient: WalletClient,
+  publicClient: PublicClient,
+  tokenAddress: Address
+): Promise<TokenBalance> {
+  if (!walletClient.account) {
+    throw new Error("No account connected to wallet client");
+  }
+
+  const userAddress = walletClient.account.address;
+
+  // Read balance, decimals, and symbol in parallel
+  const [balance, decimals, symbol] = await Promise.all([
+    publicClient.readContract({
+      address: tokenAddress,
+      abi: erc20Abi,
+      functionName: "balanceOf",
+      args: [userAddress]
+    }),
+    publicClient.readContract({
+      address: tokenAddress,
+      abi: erc20Abi,
+      functionName: "decimals"
+    }),
+    publicClient
+      .readContract({
+        address: tokenAddress,
+        abi: erc20Abi,
+        functionName: "symbol"
+      })
+      .catch(() => undefined) // Symbol is optional, some tokens don't have it
+  ]);
+
+  return {
+    raw: balance,
+    formatted: formatUnits(balance, decimals),
+    decimals,
+    symbol,
+    userAddress
+  };
+}
diff --git a/packages/rln/src/contract/types.ts b/packages/rln/src/contract/types.ts
index bd0247bb6a..479ed412bb 100644
--- a/packages/rln/src/contract/types.ts
+++ b/packages/rln/src/contract/types.ts
@@ -1,28 +1,22 @@
-import { ethers } from "ethers";
+import { Address } from "viem";
 
-export interface CustomQueryOptions extends FetchMembersOptions {
-  membersFilter: ethers.EventFilter;
-}
+import { RpcClient } from "../utils/index.js";
 
 export type Member = {
   idCommitment: string;
-  index: ethers.BigNumber;
+  index: bigint;
 };
 
 export interface RLNContractOptions {
-  signer: ethers.Signer;
-  address: string;
+  rpcClient: RpcClient;
+  address: Address;
   rateLimit?: number;
 }
 
-export interface RLNContractInitOptions extends RLNContractOptions {
-  contract?: ethers.Contract;
-}
-
 export interface MembershipRegisteredEvent {
   idCommitment: string;
-  membershipRateLimit: ethers.BigNumber;
-  index: ethers.BigNumber;
+  membershipRateLimit: bigint;
+  index: bigint;
 }
 
 export type FetchMembersOptions = {
@@ -32,13 +26,13 @@ export type FetchMembersOptions = {
 };
 
 export interface MembershipInfo {
-  index: ethers.BigNumber;
+  index: number;
   idCommitment: string;
   rateLimit: number;
   startBlock: number;
   endBlock: number;
   state: MembershipState;
-  depositAmount: ethers.BigNumber;
+  depositAmount: bigint;
   activeDuration: number;
   gracePeriodDuration: number;
   holder: string;
diff --git a/packages/rln/src/contract/wagmi/generated.ts b/packages/rln/src/contract/wagmi/generated.ts
new file mode 100644
index 0000000000..f13fa0c2ce
--- /dev/null
+++ b/packages/rln/src/contract/wagmi/generated.ts
@@ -0,0 +1,977 @@
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// IPriceCalculator
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+export const iPriceCalculatorAbi = [
+  {
+    type: "function",
+    inputs: [{ name: "_rateLimit", internalType: "uint32", type: "uint32" }],
+    name: "calculate",
+    outputs: [
+      { name: "", internalType: "address", type: "address" },
+      { name: "", internalType: "uint256", type: "uint256" }
+    ],
+    stateMutability: "view"
+  }
+] as const;
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// LinearPriceCalculator
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+export const linearPriceCalculatorAbi = [
+  {
+    type: "constructor",
+    inputs: [
+      { name: "_token", internalType: "address", type: "address" },
+      {
+        name: "_pricePerMessagePerEpoch",
+        internalType: "uint256",
+        type: "uint256"
+      }
+    ],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "_rateLimit", internalType: "uint32", type: "uint32" }],
+    name: "calculate",
+    outputs: [
+      { name: "", internalType: "address", type: "address" },
+      { name: "", internalType: "uint256", type: "uint256" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "owner",
+    outputs: [{ name: "", internalType: "address", type: "address" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "pricePerMessagePerEpoch",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "renounceOwnership",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_token", internalType: "address", type: "address" },
+      {
+        name: "_pricePerMessagePerEpoch",
+        internalType: "uint256",
+        type: "uint256"
+      }
+    ],
+    name: "setTokenAndPrice",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "token",
+    outputs: [{ name: "", internalType: "address", type: "address" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "newOwner", internalType: "address", type: "address" }],
+    name: "transferOwnership",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "previousOwner",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      },
+      {
+        name: "newOwner",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      }
+    ],
+    name: "OwnershipTransferred"
+  },
+  { type: "error", inputs: [], name: "OnlyTokensAllowed" }
+] as const;
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// MembershipUpgradeable
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+export const membershipUpgradeableAbi = [
+  {
+    type: "function",
+    inputs: [],
+    name: "activeDurationForNewMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "currentTotalRateLimit",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "holder", internalType: "address", type: "address" },
+      { name: "token", internalType: "address", type: "address" }
+    ],
+    name: "depositsToWithdraw",
+    outputs: [{ name: "balance", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "gracePeriodDurationForNewMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    name: "indicesOfLazilyErasedMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isExpired",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isInGracePeriod",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "rateLimit", internalType: "uint32", type: "uint32" }],
+    name: "isValidMembershipRateLimit",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "maxMembershipRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "maxTotalRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "membershipExpirationTimestamp",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "memberships",
+    outputs: [
+      { name: "depositAmount", internalType: "uint256", type: "uint256" },
+      { name: "activeDuration", internalType: "uint32", type: "uint32" },
+      {
+        name: "gracePeriodStartTimestamp",
+        internalType: "uint256",
+        type: "uint256"
+      },
+      { name: "gracePeriodDuration", internalType: "uint32", type: "uint32" },
+      { name: "rateLimit", internalType: "uint32", type: "uint32" },
+      { name: "index", internalType: "uint32", type: "uint32" },
+      { name: "holder", internalType: "address", type: "address" },
+      { name: "token", internalType: "address", type: "address" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "minMembershipRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "nextFreeIndex",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "priceCalculator",
+    outputs: [
+      { name: "", internalType: "contract IPriceCalculator", type: "address" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      { name: "version", internalType: "uint8", type: "uint8", indexed: false }
+    ],
+    name: "Initialized"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipErased"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipExpired"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false },
+      {
+        name: "newGracePeriodStartTimestamp",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      }
+    ],
+    name: "MembershipExtended"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipRegistered"
+  }
+] as const;
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// WakuRlnV2
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+export const wakuRlnV2Abi = [
+  { type: "constructor", inputs: [], stateMutability: "nonpayable" },
+  {
+    type: "function",
+    inputs: [],
+    name: "MAX_MEMBERSHIP_SET_SIZE",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "MERKLE_TREE_DEPTH",
+    outputs: [{ name: "", internalType: "uint8", type: "uint8" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "Q",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "activeDurationForNewMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "currentTotalRateLimit",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "deployedBlockNumber",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "holder", internalType: "address", type: "address" },
+      { name: "token", internalType: "address", type: "address" }
+    ],
+    name: "depositsToWithdraw",
+    outputs: [{ name: "balance", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitments", internalType: "uint256[]", type: "uint256[]" }
+    ],
+    name: "eraseMemberships",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitments", internalType: "uint256[]", type: "uint256[]" },
+      { name: "eraseFromMembershipSet", internalType: "bool", type: "bool" }
+    ],
+    name: "eraseMemberships",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitments", internalType: "uint256[]", type: "uint256[]" }
+    ],
+    name: "extendMemberships",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "getMembershipInfo",
+    outputs: [
+      { name: "", internalType: "uint32", type: "uint32" },
+      { name: "", internalType: "uint32", type: "uint32" },
+      { name: "", internalType: "uint256", type: "uint256" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "index", internalType: "uint40", type: "uint40" }],
+    name: "getMerkleProof",
+    outputs: [{ name: "", internalType: "uint256[20]", type: "uint256[20]" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "startIndex", internalType: "uint32", type: "uint32" },
+      { name: "endIndex", internalType: "uint32", type: "uint32" }
+    ],
+    name: "getRateCommitmentsInRangeBoundsInclusive",
+    outputs: [{ name: "", internalType: "uint256[]", type: "uint256[]" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "gracePeriodDurationForNewMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    name: "indicesOfLazilyErasedMemberships",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_priceCalculator", internalType: "address", type: "address" },
+      { name: "_maxTotalRateLimit", internalType: "uint32", type: "uint32" },
+      {
+        name: "_minMembershipRateLimit",
+        internalType: "uint32",
+        type: "uint32"
+      },
+      {
+        name: "_maxMembershipRateLimit",
+        internalType: "uint32",
+        type: "uint32"
+      },
+      { name: "_activeDuration", internalType: "uint32", type: "uint32" },
+      { name: "_gracePeriod", internalType: "uint32", type: "uint32" }
+    ],
+    name: "initialize",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isExpired",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isInGracePeriod",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isInMembershipSet",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "isValidIdCommitment",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "pure"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "rateLimit", internalType: "uint32", type: "uint32" }],
+    name: "isValidMembershipRateLimit",
+    outputs: [{ name: "", internalType: "bool", type: "bool" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "maxMembershipRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "maxTotalRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "membershipExpirationTimestamp",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "memberships",
+    outputs: [
+      { name: "depositAmount", internalType: "uint256", type: "uint256" },
+      { name: "activeDuration", internalType: "uint32", type: "uint32" },
+      {
+        name: "gracePeriodStartTimestamp",
+        internalType: "uint256",
+        type: "uint256"
+      },
+      { name: "gracePeriodDuration", internalType: "uint32", type: "uint32" },
+      { name: "rateLimit", internalType: "uint32", type: "uint32" },
+      { name: "index", internalType: "uint32", type: "uint32" },
+      { name: "holder", internalType: "address", type: "address" },
+      { name: "token", internalType: "address", type: "address" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "merkleTree",
+    outputs: [
+      { name: "maxIndex", internalType: "uint40", type: "uint40" },
+      { name: "numberOfLeaves", internalType: "uint40", type: "uint40" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "minMembershipRateLimit",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "nextFreeIndex",
+    outputs: [{ name: "", internalType: "uint32", type: "uint32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "owner",
+    outputs: [{ name: "", internalType: "address", type: "address" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "priceCalculator",
+    outputs: [
+      { name: "", internalType: "contract IPriceCalculator", type: "address" }
+    ],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "proxiableUUID",
+    outputs: [{ name: "", internalType: "bytes32", type: "bytes32" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" },
+      { name: "rateLimit", internalType: "uint32", type: "uint32" },
+      {
+        name: "idCommitmentsToErase",
+        internalType: "uint256[]",
+        type: "uint256[]"
+      }
+    ],
+    name: "register",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "renounceOwnership",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [],
+    name: "root",
+    outputs: [{ name: "", internalType: "uint256", type: "uint256" }],
+    stateMutability: "view"
+  },
+  {
+    type: "function",
+    inputs: [
+      {
+        name: "_activeDurationForNewMembership",
+        internalType: "uint32",
+        type: "uint32"
+      }
+    ],
+    name: "setActiveDuration",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      {
+        name: "_gracePeriodDurationForNewMembership",
+        internalType: "uint32",
+        type: "uint32"
+      }
+    ],
+    name: "setGracePeriodDuration",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      {
+        name: "_maxMembershipRateLimit",
+        internalType: "uint32",
+        type: "uint32"
+      }
+    ],
+    name: "setMaxMembershipRateLimit",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_maxTotalRateLimit", internalType: "uint32", type: "uint32" }
+    ],
+    name: "setMaxTotalRateLimit",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      {
+        name: "_minMembershipRateLimit",
+        internalType: "uint32",
+        type: "uint32"
+      }
+    ],
+    name: "setMinMembershipRateLimit",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "_priceCalculator", internalType: "address", type: "address" }
+    ],
+    name: "setPriceCalculator",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "newOwner", internalType: "address", type: "address" }],
+    name: "transferOwnership",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "newImplementation", internalType: "address", type: "address" }
+    ],
+    name: "upgradeTo",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "function",
+    inputs: [
+      { name: "newImplementation", internalType: "address", type: "address" },
+      { name: "data", internalType: "bytes", type: "bytes" }
+    ],
+    name: "upgradeToAndCall",
+    outputs: [],
+    stateMutability: "payable"
+  },
+  {
+    type: "function",
+    inputs: [{ name: "token", internalType: "address", type: "address" }],
+    name: "withdraw",
+    outputs: [],
+    stateMutability: "nonpayable"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "previousAdmin",
+        internalType: "address",
+        type: "address",
+        indexed: false
+      },
+      {
+        name: "newAdmin",
+        internalType: "address",
+        type: "address",
+        indexed: false
+      }
+    ],
+    name: "AdminChanged"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "beacon",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      }
+    ],
+    name: "BeaconUpgraded"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      { name: "version", internalType: "uint8", type: "uint8", indexed: false }
+    ],
+    name: "Initialized"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipErased"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipExpired"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint32",
+        type: "uint32",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false },
+      {
+        name: "newGracePeriodStartTimestamp",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      }
+    ],
+    name: "MembershipExtended"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "idCommitment",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      {
+        name: "membershipRateLimit",
+        internalType: "uint256",
+        type: "uint256",
+        indexed: false
+      },
+      { name: "index", internalType: "uint32", type: "uint32", indexed: false }
+    ],
+    name: "MembershipRegistered"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "previousOwner",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      },
+      {
+        name: "newOwner",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      }
+    ],
+    name: "OwnershipTransferred"
+  },
+  {
+    type: "event",
+    anonymous: false,
+    inputs: [
+      {
+        name: "implementation",
+        internalType: "address",
+        type: "address",
+        indexed: true
+      }
+    ],
+    name: "Upgraded"
+  },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "CannotEraseActiveMembership"
+  },
+  { type: "error", inputs: [], name: "CannotExceedMaxTotalRateLimit" },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "CannotExtendNonGracePeriodMembership"
+  },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "InvalidIdCommitment"
+  },
+  { type: "error", inputs: [], name: "InvalidMembershipRateLimit" },
+  {
+    type: "error",
+    inputs: [
+      { name: "startIndex", internalType: "uint256", type: "uint256" },
+      { name: "endIndex", internalType: "uint256", type: "uint256" }
+    ],
+    name: "InvalidPaginationQuery"
+  },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "MembershipDoesNotExist"
+  },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "NonHolderCannotEraseGracePeriodMembership"
+  },
+  {
+    type: "error",
+    inputs: [
+      { name: "idCommitment", internalType: "uint256", type: "uint256" }
+    ],
+    name: "NonHolderCannotExtend"
+  }
+] as const;
diff --git a/packages/rln/src/credentials_manager.ts b/packages/rln/src/credentials_manager.ts
index b82d9421f1..25a61898f2 100644
--- a/packages/rln/src/credentials_manager.ts
+++ b/packages/rln/src/credentials_manager.ts
@@ -1,5 +1,5 @@
 import { Logger } from "@waku/utils";
-import { ethers } from "ethers";
+import { publicActions } from "viem";
 
 import { RLN_CONTRACT } from "./contract/constants.js";
 import { RLNBaseContract } from "./contract/rln_base_contract.js";
@@ -10,7 +10,7 @@ import type {
 } from "./keystore/index.js";
 import { KeystoreEntity, Password } from "./keystore/types.js";
 import { RegisterMembershipOptions, StartRLNOptions } from "./types.js";
-import { extractMetaMaskSigner } from "./utils/index.js";
+import { createViemClientFromWindow, RpcClient } from "./utils/index.js";
 import { Zerokit } from "./zerokit.js";
 
 const log = new Logger("rln:credentials");
@@ -24,7 +24,7 @@ export class RLNCredentialsManager {
   protected starting = false;
 
   public contract: undefined | RLNBaseContract;
-  public signer: undefined | ethers.Signer;
+  public rpcClient: undefined | RpcClient;
 
   protected keystore = Keystore.create();
   public credentials: undefined | DecryptedCredentials;
@@ -36,10 +36,6 @@ export class RLNCredentialsManager {
     this.zerokit = zerokit;
   }
 
-  public get provider(): undefined | ethers.providers.Provider {
-    return this.contract?.provider;
-  }
-
   public async start(options: StartRLNOptions = {}): Promise<void> {
     if (this.started || this.starting) {
       log.info("RLNCredentialsManager already started or starting");
@@ -59,10 +55,8 @@ export class RLNCredentialsManager {
         log.info("Credentials successfully decrypted");
       }
 
-      const { signer, address, rateLimit } = await this.determineStartOptions(
-        options,
-        credentials
-      );
+      const { rpcClient, address, rateLimit } =
+        await this.determineStartOptions(options, credentials);
 
       log.info(`Using contract address: ${address}`);
 
@@ -72,10 +66,10 @@ export class RLNCredentialsManager {
       }
 
       this.credentials = credentials;
-      this.signer = signer!;
+      this.rpcClient = rpcClient!;
       this.contract = await RLNBaseContract.create({
-        address: address!,
-        signer: signer!,
+        address: address! as `0x${string}`,
+        rpcClient: this.rpcClient,
         rateLimit: rateLimit ?? this.zerokit.rateLimit
       });
 
@@ -134,7 +128,7 @@ export class RLNCredentialsManager {
   protected async determineStartOptions(
     options: StartRLNOptions,
     credentials: KeystoreEntity | undefined
-  ): Promise<StartRLNOptions> {
+  ): Promise<StartRLNOptions & { rpcClient: RpcClient }> {
     let chainId = credentials?.membership.chainId;
     const address =
       credentials?.membership.address ||
@@ -146,11 +140,14 @@ export class RLNCredentialsManager {
       log.info(`Using Linea contract with chainId: ${chainId}`);
     }
 
-    const signer = options.signer || (await extractMetaMaskSigner());
-    const currentChainId = await signer.getChainId();
+    const rpcClient: RpcClient = options.walletClient
+      ? options.walletClient.extend(publicActions)
+      : await createViemClientFromWindow();
+
+    const currentChainId = rpcClient.chain?.id;
     log.info(`Current chain ID: ${currentChainId}`);
 
-    if (chainId && chainId !== currentChainId.toString()) {
+    if (chainId && chainId !== currentChainId?.toString()) {
       log.error(
         `Chain ID mismatch: contract=${chainId}, current=${currentChainId}`
       );
@@ -160,7 +157,7 @@ export class RLNCredentialsManager {
     }
 
     return {
-      signer,
+      rpcClient,
       address
     };
   }
@@ -206,9 +203,9 @@ export class RLNCredentialsManager {
   protected async verifyCredentialsAgainstContract(
     credentials: KeystoreEntity
   ): Promise<void> {
-    if (!this.contract) {
+    if (!this.contract || !this.rpcClient) {
       throw Error(
-        "Failed to verify chain coordinates: no contract initialized."
+        "Failed to verify chain coordinates: no contract or viem client initialized."
       );
     }
 
@@ -221,8 +218,7 @@ export class RLNCredentialsManager {
     }
 
     const chainId = credentials.membership.chainId;
-    const network = await this.contract.provider.getNetwork();
-    const currentChainId = network.chainId;
+    const currentChainId = await this.rpcClient.getChainId();
     if (chainId !== currentChainId.toString()) {
       throw Error(
         `Failed to verify chain coordinates: credentials chainID=${chainId} is not equal to registryContract chainID=${currentChainId}`
diff --git a/packages/rln/src/index.ts b/packages/rln/src/index.ts
index 3348e370f7..7aa80a3d64 100644
--- a/packages/rln/src/index.ts
+++ b/packages/rln/src/index.ts
@@ -1,11 +1,10 @@
-import { RLN_ABI } from "./contract/abi/rln.js";
 import { RLN_CONTRACT } from "./contract/index.js";
 import { RLNBaseContract } from "./contract/rln_base_contract.js";
 import { createRLN } from "./create.js";
 import { IdentityCredential } from "./identity.js";
 import { Keystore } from "./keystore/index.js";
 import { RLNInstance } from "./rln.js";
-import { extractMetaMaskSigner } from "./utils/index.js";
+import { createViemClientFromWindow } from "./utils/index.js";
 
 export {
   RLNBaseContract,
@@ -14,10 +13,20 @@ export {
   RLNInstance,
   IdentityCredential,
   RLN_CONTRACT,
-  extractMetaMaskSigner,
-  RLN_ABI
+  createViemClientFromWindow
 };
 
+export {
+  wakuRlnV2Abi,
+  linearPriceCalculatorAbi,
+  iPriceCalculatorAbi,
+  membershipUpgradeableAbi
+} from "./contract/wagmi/generated.js";
+
+// Export token utilities
+export { getTokenBalance, erc20Abi } from "./contract/token.js";
+export type { TokenBalance } from "./contract/token.js";
+
 export type {
   DecryptedCredentials,
   EncryptedCredentials,
diff --git a/packages/rln/src/keystore/keystore.ts b/packages/rln/src/keystore/keystore.ts
index f001f2938d..c2623b2fa0 100644
--- a/packages/rln/src/keystore/keystore.ts
+++ b/packages/rln/src/keystore/keystore.ts
@@ -160,7 +160,15 @@ export class Keystore {
   }
 
   public toString(): string {
-    return JSON.stringify(this.data);
+    // Custom replacer function to handle BigInt serialization
+    const bigIntReplacer = (_key: string, value: unknown): unknown => {
+      if (typeof value === "bigint") {
+        return value.toString();
+      }
+      return value;
+    };
+
+    return JSON.stringify(this.data, bigIntReplacer);
   }
 
   public toObject(): NwakuKeystore {
@@ -327,21 +335,32 @@ export class Keystore {
     const { IDCommitment, IDNullifier, IDSecretHash, IDTrapdoor } =
       options.identity;
 
+    // Custom replacer function to handle BigInt serialization
+    const bigIntReplacer = (_key: string, value: unknown): unknown => {
+      if (typeof value === "bigint") {
+        return value.toString();
+      }
+      return value;
+    };
+
     return utf8ToBytes(
-      JSON.stringify({
-        treeIndex: options.membership.treeIndex,
-        identityCredential: {
-          idCommitment: Array.from(IDCommitment),
-          idNullifier: Array.from(IDNullifier),
-          idSecretHash: Array.from(IDSecretHash),
-          idTrapdoor: Array.from(IDTrapdoor)
-        },
-        membershipContract: {
-          chainId: options.membership.chainId,
-          address: options.membership.address
+      JSON.stringify(
+        {
+          treeIndex: options.membership.treeIndex,
+          identityCredential: {
+            idCommitment: Array.from(IDCommitment),
+            idNullifier: Array.from(IDNullifier),
+            idSecretHash: Array.from(IDSecretHash),
+            idTrapdoor: Array.from(IDTrapdoor)
+          },
+          membershipContract: {
+            chainId: options.membership.chainId,
+            address: options.membership.address
+          },
+          userMessageLimit: options.membership.rateLimit
         },
-        userMessageLimit: options.membership.rateLimit
-      })
+        bigIntReplacer
+      )
     );
   }
 }
diff --git a/packages/rln/src/proof.spec.ts b/packages/rln/src/proof.spec.ts
new file mode 100644
index 0000000000..5d15798283
--- /dev/null
+++ b/packages/rln/src/proof.spec.ts
@@ -0,0 +1,101 @@
+import { expect } from "chai";
+
+import { Keystore } from "./keystore/index.js";
+import { RLNInstance } from "./rln.js";
+import { BytesUtils } from "./utils/index.js";
+import {
+  calculateRateCommitment,
+  extractPathDirectionsFromProof,
+  MERKLE_TREE_DEPTH,
+  reconstructMerkleRoot
+} from "./utils/merkle.js";
+import { TEST_KEYSTORE_DATA } from "./utils/test_keystore.js";
+
+describe("RLN Proof Integration Tests", function () {
+  this.timeout(30000);
+
+  it("validate stored merkle proof data", function () {
+    // Convert stored merkle proof strings to bigints
+    const merkleProof = TEST_KEYSTORE_DATA.merkleProof.map((p) => BigInt(p));
+
+    expect(merkleProof).to.be.an("array");
+    expect(merkleProof).to.have.lengthOf(MERKLE_TREE_DEPTH); // RLN uses fixed depth merkle tree
+
+    merkleProof.forEach((element, i) => {
+      expect(element).to.be.a(
+        "bigint",
+        `Proof element ${i} should be a bigint`
+      );
+      expect(element).to.not.equal(0n, `Proof element ${i} should not be zero`);
+    });
+  });
+
+  it("should generate a valid RLN proof", async function () {
+    const rlnInstance = await RLNInstance.create();
+    // Load credential from test keystore
+    const keystore = Keystore.fromString(TEST_KEYSTORE_DATA.keystoreJson);
+    if (!keystore) {
+      throw new Error("Failed to load test keystore");
+    }
+    const credentialHash = TEST_KEYSTORE_DATA.credentialHash;
+    const password = TEST_KEYSTORE_DATA.password;
+    const credential = await keystore.readCredential(credentialHash, password);
+    if (!credential) {
+      throw new Error("Failed to unlock credential with provided password");
+    }
+
+    const idCommitment = credential.identity.IDCommitmentBigInt;
+
+    const merkleProof = TEST_KEYSTORE_DATA.merkleProof.map((p) => BigInt(p));
+    const merkleRoot = BigInt(TEST_KEYSTORE_DATA.merkleRoot);
+    const membershipIndex = BigInt(TEST_KEYSTORE_DATA.membershipIndex);
+    const rateLimit = BigInt(TEST_KEYSTORE_DATA.rateLimit);
+
+    const rateCommitment = calculateRateCommitment(idCommitment, rateLimit);
+
+    const proofElementIndexes = extractPathDirectionsFromProof(
+      merkleProof,
+      rateCommitment,
+      merkleRoot
+    );
+    if (!proofElementIndexes) {
+      throw new Error("Failed to extract proof element indexes");
+    }
+
+    expect(proofElementIndexes).to.have.lengthOf(MERKLE_TREE_DEPTH);
+
+    const reconstructedRoot = reconstructMerkleRoot(
+      merkleProof,
+      membershipIndex,
+      rateCommitment
+    );
+
+    expect(reconstructedRoot).to.equal(
+      merkleRoot,
+      "Reconstructed root should match stored root"
+    );
+
+    const testMessage = new TextEncoder().encode("test");
+
+    const proof = await rlnInstance.zerokit.generateRLNProof(
+      testMessage,
+      Number(membershipIndex),
+      new Date(),
+      credential.identity.IDSecretHash,
+      merkleProof.map((proof) => BytesUtils.fromBigInt(proof, 32, "little")),
+      proofElementIndexes.map((index) =>
+        BytesUtils.writeUIntLE(new Uint8Array(1), index, 0, 1)
+      ),
+      Number(rateLimit),
+      0
+    );
+
+    const isValid = rlnInstance.zerokit.verifyRLNProof(
+      BytesUtils.writeUIntLE(new Uint8Array(8), testMessage.length, 0, 8),
+      testMessage,
+      proof,
+      [BytesUtils.fromBigInt(merkleRoot, 32, "little")]
+    );
+    expect(isValid).to.be.true;
+  });
+});
diff --git a/packages/rln/src/rln.ts b/packages/rln/src/rln.ts
index 491fd14d44..739dcefd3a 100644
--- a/packages/rln/src/rln.ts
+++ b/packages/rln/src/rln.ts
@@ -1,5 +1,6 @@
 import { Logger } from "@waku/utils";
 import init, * as zerokitRLN from "@waku/zerokit-rln-wasm";
+import initUtils from "@waku/zerokit-rln-wasm-utils";
 
 import { DEFAULT_RATE_LIMIT } from "./contract/constants.js";
 import { RLNCredentialsManager } from "./credentials_manager.js";
@@ -16,6 +17,7 @@ export class RLNInstance extends RLNCredentialsManager {
    */
   public static async create(): Promise<RLNInstance> {
     try {
+      await initUtils();
       await init();
       zerokitRLN.initPanicHook();
 
diff --git a/packages/rln/src/types.ts b/packages/rln/src/types.ts
index 7980c8aea9..55497de0a4 100644
--- a/packages/rln/src/types.ts
+++ b/packages/rln/src/types.ts
@@ -1,4 +1,4 @@
-import { ethers } from "ethers";
+import { WalletClient } from "viem";
 
 import { IdentityCredential } from "./identity.js";
 import {
@@ -8,9 +8,9 @@ import {
 
 export type StartRLNOptions = {
   /**
-   * If not set - will extract MetaMask account and get signer from it.
+   * If not set - will attempt to create from provider injected in window.
    */
-  signer?: ethers.Signer;
+  walletClient?: WalletClient;
   /**
    * If not set - will use default SEPOLIA_CONTRACT address.
    */
diff --git a/packages/rln/src/utils/bytes.ts b/packages/rln/src/utils/bytes.ts
index 4df17bd380..296ced4dd8 100644
--- a/packages/rln/src/utils/bytes.ts
+++ b/packages/rln/src/utils/bytes.ts
@@ -49,6 +49,43 @@ export class BytesUtils {
     return result;
   }
 
+  /**
+   * Convert a BigInt to a Uint8Array with configurable output endianness
+   * @param value - The BigInt to convert
+   * @param byteLength - The desired byte length of the output (optional, auto-calculated if not provided)
+   * @param outputEndianness - Endianness of the output bytes ('big' or 'little')
+   * @returns Uint8Array representation of the BigInt
+   */
+  public static fromBigInt(
+    value: bigint,
+    byteLength: number,
+    outputEndianness: "big" | "little" = "little"
+  ): Uint8Array {
+    if (value < 0n) {
+      throw new Error("Cannot convert negative BigInt to bytes");
+    }
+
+    if (value === 0n) {
+      return new Uint8Array(byteLength);
+    }
+
+    const result = new Uint8Array(byteLength);
+    let workingValue = value;
+
+    // Extract bytes in big-endian order
+    for (let i = byteLength - 1; i >= 0; i--) {
+      result[i] = Number(workingValue & 0xffn);
+      workingValue = workingValue >> 8n;
+    }
+
+    // If we need little-endian output, reverse the array
+    if (outputEndianness === "little") {
+      result.reverse();
+    }
+
+    return result;
+  }
+
   /**
    * Writes an unsigned integer to a buffer in little-endian format
    */
diff --git a/packages/rln/src/utils/epoch.ts b/packages/rln/src/utils/epoch.ts
index 19b2f81108..bf89d40aa5 100644
--- a/packages/rln/src/utils/epoch.ts
+++ b/packages/rln/src/utils/epoch.ts
@@ -1,5 +1,7 @@
 import { Logger } from "@waku/utils";
 
+import { BytesUtils } from "./bytes.js";
+
 const DefaultEpochUnitSeconds = 10; // the rln-relay epoch length in seconds
 
 const log = new Logger("rln:epoch");
@@ -15,11 +17,7 @@ export function dateToEpoch(
 }
 
 export function epochIntToBytes(epoch: number): Uint8Array {
-  const bytes = new Uint8Array(32);
-  const db = new DataView(bytes.buffer);
-  db.setUint32(0, epoch, true);
-  log.info("encoded epoch", epoch, bytes);
-  return bytes;
+  return BytesUtils.writeUIntLE(new Uint8Array(32), epoch, 0, 32);
 }
 
 export function epochBytesToInt(bytes: Uint8Array): number {
diff --git a/packages/rln/src/utils/hash.ts b/packages/rln/src/utils/hash.ts
index 6aa8e29277..43908ce45d 100644
--- a/packages/rln/src/utils/hash.ts
+++ b/packages/rln/src/utils/hash.ts
@@ -1,4 +1,4 @@
-import * as zerokitRLN from "@waku/zerokit-rln-wasm";
+import { hash, poseidonHash as poseidon } from "@waku/zerokit-rln-wasm-utils";
 
 import { BytesUtils } from "./bytes.js";
 
@@ -10,16 +10,9 @@ export function poseidonHash(...input: Array<Uint8Array>): Uint8Array {
     8
   );
   const lenPrefixedData = BytesUtils.concatenate(inputLen, ...input);
-  return zerokitRLN.poseidonHash(lenPrefixedData);
+  return poseidon(lenPrefixedData, true);
 }
 
 export function sha256(input: Uint8Array): Uint8Array {
-  const inputLen = BytesUtils.writeUIntLE(
-    new Uint8Array(8),
-    input.length,
-    0,
-    8
-  );
-  const lenPrefixedData = BytesUtils.concatenate(inputLen, input);
-  return zerokitRLN.hash(lenPrefixedData);
+  return hash(input, true);
 }
diff --git a/packages/rln/src/utils/index.ts b/packages/rln/src/utils/index.ts
index dddc0b8285..a5cf32937e 100644
--- a/packages/rln/src/utils/index.ts
+++ b/packages/rln/src/utils/index.ts
@@ -1,4 +1,4 @@
-export { extractMetaMaskSigner } from "./metamask.js";
+export { createViemClientFromWindow, RpcClient } from "./rpcClient.js";
 export { BytesUtils } from "./bytes.js";
 export { sha256, poseidonHash } from "./hash.js";
 export { dateToEpoch, epochIntToBytes, epochBytesToInt } from "./epoch.js";
diff --git a/packages/rln/src/utils/merkle.ts b/packages/rln/src/utils/merkle.ts
new file mode 100644
index 0000000000..2080c74439
--- /dev/null
+++ b/packages/rln/src/utils/merkle.ts
@@ -0,0 +1,179 @@
+import { BytesUtils } from "./bytes.js";
+import { poseidonHash } from "./hash.js";
+
+/**
+ * The fixed depth of the Merkle tree used in the RLN contract
+ * This is a constant that will never change for the on-chain implementation
+ */
+export const MERKLE_TREE_DEPTH = 20;
+
+/**
+ * Reconstructs a Merkle tree root from a proof and leaf information
+ *
+ * @param proof - Array of MERKLE_TREE_DEPTH bigint elements representing the Merkle proof
+ * @param leafIndex - The index of the leaf in the tree (used to determine left/right positioning)
+ * @param leafValue - The value of the leaf (typically the rate commitment)
+ * @returns The reconstructed root as a bigint
+ */
+export function reconstructMerkleRoot(
+  proof: readonly bigint[],
+  leafIndex: bigint,
+  leafValue: bigint
+): bigint {
+  if (proof.length !== MERKLE_TREE_DEPTH) {
+    throw new Error(
+      `Expected proof of length ${MERKLE_TREE_DEPTH}, got ${proof.length}`
+    );
+  }
+
+  let currentValue = leafValue;
+
+  // Process each level of the tree (0 to MERKLE_TREE_DEPTH-1)
+  for (let level = 0; level < MERKLE_TREE_DEPTH; level++) {
+    // Check if bit `level` is set in the leaf index
+    const bit = (leafIndex >> BigInt(level)) & 1n;
+
+    // Convert bigints to Uint8Array for hashing
+    const currentBytes = bigIntToBytes32(currentValue);
+    const proofBytes = bigIntToBytes32(proof[level]);
+
+    let hashResult: Uint8Array;
+
+    if (bit === 0n) {
+      // Current node is a left child: hash(current, proof[level])
+      hashResult = poseidonHash(currentBytes, proofBytes);
+    } else {
+      // Current node is a right child: hash(proof[level], current)
+      hashResult = poseidonHash(proofBytes, currentBytes);
+    }
+
+    // Convert hash result back to bigint for next iteration
+    currentValue = BytesUtils.toBigInt(hashResult, "little");
+  }
+
+  return currentValue;
+}
+
+/**
+ * Extracts index information from a Merkle proof by attempting to reconstruct
+ * the root with different possible indices and comparing against the expected root
+ *
+ * @param proof - Array of MERKLE_TREE_DEPTH bigint elements representing the Merkle proof
+ * @param leafValue - The value of the leaf (typically the rate commitment)
+ * @param expectedRoot - The expected root to match against
+ * @param maxIndex - Maximum index to try (default: 2^MERKLE_TREE_DEPTH - 1)
+ * @returns The index that produces the expected root, or null if not found
+ */
+function extractIndexFromProof(
+  proof: readonly bigint[],
+  leafValue: bigint,
+  expectedRoot: bigint,
+  maxIndex: bigint = (1n << BigInt(MERKLE_TREE_DEPTH)) - 1n
+): bigint | null {
+  // Try different indices to see which one produces the expected root
+  for (let index = 0n; index <= maxIndex; index++) {
+    try {
+      const reconstructedRoot = reconstructMerkleRoot(proof, index, leafValue);
+      if (reconstructedRoot === expectedRoot) {
+        return index;
+      }
+    } catch (error) {
+      // Continue trying other indices if reconstruction fails
+      continue;
+    }
+  }
+
+  return null;
+}
+
+/**
+ * Calculates the rate commitment from an ID commitment and rate limit
+ * This matches the contract's calculation: PoseidonT3.hash([idCommitment, rateLimit])
+ *
+ * @param idCommitment - The identity commitment as a bigint
+ * @param rateLimit - The rate limit as a bigint
+ * @returns The rate commitment as a bigint
+ */
+export function calculateRateCommitment(
+  idCommitment: bigint,
+  rateLimit: bigint
+): bigint {
+  const idBytes = bigIntToBytes32(idCommitment);
+  const rateLimitBytes = bigIntToBytes32(rateLimit);
+
+  const hashResult = poseidonHash(idBytes, rateLimitBytes);
+  return BytesUtils.toBigInt(hashResult, "little");
+}
+
+/**
+ * Converts a bigint to a 32-byte Uint8Array in little-endian format
+ *
+ * @param value - The bigint value to convert
+ * @returns 32-byte Uint8Array representation
+ */
+function bigIntToBytes32(value: bigint): Uint8Array {
+  const bytes = new Uint8Array(32);
+  let temp = value;
+
+  for (let i = 0; i < 32; i++) {
+    bytes[i] = Number(temp & 0xffn);
+    temp >>= 8n;
+  }
+
+  return bytes;
+}
+
+/**
+ * Extracts the path direction bits from a Merkle proof by finding the leaf index
+ * that produces the expected root, then converting that index to path directions
+ *
+ * @param proof - Array of MERKLE_TREE_DEPTH bigint elements representing the Merkle proof
+ * @param leafValue - The value of the leaf (typically the rate commitment)
+ * @param expectedRoot - The expected root to match against
+ * @param maxIndex - Maximum index to try (default: 2^MERKLE_TREE_DEPTH - 1)
+ * @returns Array of MERKLE_TREE_DEPTH numbers (0 or 1) representing path directions, or null if no valid path found
+ *          - 0 means the node is a left child (hash order: current, sibling)
+ *          - 1 means the node is a right child (hash order: sibling, current)
+ */
+export function extractPathDirectionsFromProof(
+  proof: readonly bigint[],
+  leafValue: bigint,
+  expectedRoot: bigint,
+  maxIndex: bigint = (1n << BigInt(MERKLE_TREE_DEPTH)) - 1n
+): number[] | null {
+  // First, find the leaf index that produces the expected root
+  const leafIndex = extractIndexFromProof(
+    proof,
+    leafValue,
+    expectedRoot,
+    maxIndex
+  );
+
+  if (leafIndex === null) {
+    return null;
+  }
+
+  // Convert the leaf index to path directions
+  return getPathDirectionsFromIndex(leafIndex);
+}
+
+/**
+ * Converts a leaf index to an array of path direction bits
+ *
+ * @param leafIndex - The index of the leaf in the tree
+ * @returns Array of MERKLE_TREE_DEPTH numbers (0 or 1) representing path directions
+ *          - 0 means the node is a left child (hash order: current, sibling)
+ *          - 1 means the node is a right child (hash order: sibling, current)
+ */
+function getPathDirectionsFromIndex(leafIndex: bigint): number[] {
+  const pathDirections: number[] = [];
+
+  // For each level (0 to MERKLE_TREE_DEPTH-1), extract the bit that determines left/right
+  for (let level = 0; level < MERKLE_TREE_DEPTH; level++) {
+    // Check if bit `level` is set in the leaf index
+    const bit = (leafIndex >> BigInt(level)) & 1n;
+    pathDirections.push(Number(bit));
+  }
+
+  return pathDirections;
+}
diff --git a/packages/rln/src/utils/metamask.ts b/packages/rln/src/utils/metamask.ts
deleted file mode 100644
index 83c7066106..0000000000
--- a/packages/rln/src/utils/metamask.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { ethers } from "ethers";
-
-export const extractMetaMaskSigner = async (): Promise<ethers.Signer> => {
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  const ethereum = (window as any).ethereum;
-
-  if (!ethereum) {
-    throw Error(
-      "Missing or invalid Ethereum provider. Please install a Web3 wallet such as MetaMask."
-    );
-  }
-
-  await ethereum.request({ method: "eth_requestAccounts" });
-  const provider = new ethers.providers.Web3Provider(ethereum, "any");
-
-  return provider.getSigner();
-};
diff --git a/packages/rln/src/utils/rpcClient.ts b/packages/rln/src/utils/rpcClient.ts
new file mode 100644
index 0000000000..585adf1a9d
--- /dev/null
+++ b/packages/rln/src/utils/rpcClient.ts
@@ -0,0 +1,57 @@
+import "viem/window";
+import {
+  type Address,
+  createWalletClient,
+  custom,
+  PublicActions,
+  publicActions,
+  WalletClient
+} from "viem";
+import { lineaSepolia } from "viem/chains";
+
+export type RpcClient = WalletClient & PublicActions;
+
+/**
+ * Checks window for injected Ethereum provider, requests user to connect, and creates an RPC client object
+ * capable of performing both read and write operations on the blockchain.
+ *
+ * If the wallet is not connected to the Linea Sepolia network, it will attempt to switch to it.
+ * If the wallet does not have the Linea Sepolia network added, it will attempt to add it.
+ */
+export const createViemClientFromWindow = async (): Promise<RpcClient> => {
+  const ethereum = window.ethereum;
+
+  if (!ethereum) {
+    throw Error(
+      "Missing or invalid Ethereum provider. Please install a Web3 wallet such as MetaMask."
+    );
+  }
+
+  const [account] = await ethereum.request({ method: "eth_requestAccounts" });
+
+  const rpcClient: RpcClient = createWalletClient({
+    account: account as Address,
+    chain: lineaSepolia,
+    transport: custom(window.ethereum!)
+  }).extend(publicActions);
+
+  // Ensure wallet is connected to Linea Sepolia
+  try {
+    await rpcClient.switchChain({ id: lineaSepolia.id });
+  } catch (error: unknown) {
+    // This error code indicates that the chain has not been added to the wallet
+    if (
+      typeof error === "object" &&
+      error !== null &&
+      "code" in error &&
+      error.code === 4902
+    ) {
+      await rpcClient.addChain({ chain: lineaSepolia });
+      await rpcClient.switchChain({ id: lineaSepolia.id });
+    } else {
+      throw error;
+    }
+  }
+
+  return rpcClient;
+};
diff --git a/packages/rln/src/utils/test_keystore.ts b/packages/rln/src/utils/test_keystore.ts
new file mode 100644
index 0000000000..707ec8f451
--- /dev/null
+++ b/packages/rln/src/utils/test_keystore.ts
@@ -0,0 +1,33 @@
+export const TEST_KEYSTORE_DATA = {
+  keystoreJson:
+    '{"application":"waku-rln-relay","appIdentifier":"01234567890abcdef","version":"0.2","credentials":{"E0A8AC077B95F64C1B2C4B116468B22EFA3B1CFF250069AE07422F645BAA555E":{"crypto":{"cipher":"aes-128-ctr","cipherparams":{"iv":"96aff104d7bb23cefb57a4c5e816a3b9"},"ciphertext":"1ae2c7a47274d12d6a4b439da48abfa89be29e4ba3308d153e2e808d3e120cc85da472ab1e0278c945231092162d31d753ecb48484ac0c3a7efe6380d08f5dedecc9cda26bd156a30d232b9da4313c5ec92b21cd3dc3ca03cff68afde94a063799b658cc3e4a5c648e620d584a8a184d2d473e3e94c897e21e0de7580639dcf40c0133f36896ac5bee2dd5fe8810a5441e31e1938ecc4b195db57c1b6d320a374508406dfb7a4879081b70100140515b4c6c551f25f9b4c9a7214ac2dc222410bf74666407343dfd4af477c85cf2f316bb7a512a88948d88f5474374563d51d02c13eede6b6cf64fab7991e529157d7de39033099d26f323d9710159b47d2511695b4fb428e3b02c760e1470a3ece712c6a03692d067e0e17930bc25ce7dc4ad2634e07ef51fa7369de6b4d495c7ae1d8ad8dccdd2fa12802db4203c527887adf5eb42e2551e120b8a455892d0ac9369faf708465a983c03c7c8f77c268f85cacc7b718a1e9e2800b160ca1f7a78f2c160cbc97396f5dfe0e0f3b35addb4f8d667021c79eec5248122d8c983075b9e8ca20679e90a12bdbeefb33df21523b4e1ea7ab57ddc706b43bf4827fbc3530d20cb906468af5c5c31ac08815f3ed1d00341be7e287a3fb7ef67aecf2e56f694c51ba6db8641ac873e26659c92a8527c42df2d5ac15ff6201bdfa8a5ee34b6a90ff864fba89370a8c51efcb4ed1b69f3ed0e37ee97c66eb84763f107e1214e088e3149b2433a8da595293343b2290b0a84b7f796b70005d1672446d98d45da7c89c3eb8d91ece94ee41099f9f43c6810ce71d9f75ac3dffe1de0c79e40baad486ecaefbd0cc0e89aed7e0a16ea271a371d3f5927a1c7b813608de5715692e58322260a4bcd4ccba4b2376df01f58645c16a7b37c8473b94c7577ae774e5c72132ed15507ab2027ddabf137aa417b134b653eda247314","kdf":"pbkdf2","kdfparams":{"dklen":32,"c":262144,"prf":"hmac-sha256","salt":"5f2081f089e9e277873bf1f538c60d714749a2bb910d8f1ed119d8d403235a8c"},"mac":"8d0667893b7d3b5f0b37c43edef616a8d295dc58292c98655eec8b5fe2ad69c3"}}}}',
+  credentialHash:
+    "E0A8AC077B95F64C1B2C4B116468B22EFA3B1CFF250069AE07422F645BAA555E",
+  password: "12345678",
+  merkleProof: [
+    "21837427992620339064281119305700224965155897361776876451171527491637273262703",
+    "2849928341676773476316761863425436901389023422598778907382563142042850204484",
+    "21699429914184421678079077958020273488709892845081201722564329942861605328226",
+    "8522396354694062508299995669286882048091268903835874022564768254605186873188",
+    "4967828252976847302563643214799688359334626491919847999565033460501719790119",
+    "985039452502497454598906195897243897432778848314526706136284672198477696437",
+    "3565679202982155915846059790230166166058846233389836779083891288518797717794",
+    "1241870589869015758600129850815671823696180350556207862318506998039540071293",
+    "21551820661461729022865262380882070649935529853313286572328683688269863701601",
+    "16870197621778677478951480138572599814910741341994641594346262317677658226992",
+    "12413880268183407374852357075976609371175688755676981206018884971008854919922",
+    "14271763308400718165336499097156975241954733520325982997864342600795471836726",
+    "20066985985293572387227381049700832219069292839614107140851619262827735677018",
+    "9394776414966240069580838672673694685292165040808226440647796406499139370960",
+    "11331146992410411304059858900317123658895005918277453009197229807340014528524",
+    "15819538789928229930262697811477882737253464456578333862691129291651619515538",
+    "19217088683336594659449020493828377907203207941212636669271704950158751593251",
+    "21035245323335827719745544373081896983162834604456827698288649288827293579666",
+    "6939770416153240137322503476966641397417391950902474480970945462551409848591",
+    "10941962436777715901943463195175331263348098796018438960955633645115732864202"
+  ],
+  merkleRoot:
+    "3281768056038133311055294993138164819435524453040629949691729675724822631973",
+  membershipIndex: "703",
+  rateLimit: "300"
+};
diff --git a/packages/rln/src/zerokit.spec.ts b/packages/rln/src/zerokit.browser.spec.ts
similarity index 100%
rename from packages/rln/src/zerokit.spec.ts
rename to packages/rln/src/zerokit.browser.spec.ts
diff --git a/packages/rln/src/zerokit.ts b/packages/rln/src/zerokit.ts
index 47df182f00..ca743fec86 100644
--- a/packages/rln/src/zerokit.ts
+++ b/packages/rln/src/zerokit.ts
@@ -1,14 +1,21 @@
 import * as zerokitRLN from "@waku/zerokit-rln-wasm";
+import { generateSeededExtendedMembershipKey } from "@waku/zerokit-rln-wasm-utils";
 
-import { DEFAULT_RATE_LIMIT } from "./contract/constants.js";
+import { DEFAULT_RATE_LIMIT, RATE_LIMIT_PARAMS } from "./contract/constants.js";
 import { IdentityCredential } from "./identity.js";
 import { WitnessCalculator } from "./resources/witness_calculator";
+import { BytesUtils } from "./utils/bytes.js";
+import { dateToEpoch, epochIntToBytes } from "./utils/epoch.js";
+import { poseidonHash, sha256 } from "./utils/hash.js";
 
 export class Zerokit {
   public constructor(
     private readonly zkRLN: number,
     private readonly witnessCalculator: WitnessCalculator,
-    private readonly _rateLimit: number = DEFAULT_RATE_LIMIT
+    private readonly _rateLimit: number = DEFAULT_RATE_LIMIT,
+    private readonly rlnIdentifier: Uint8Array = new TextEncoder().encode(
+      "rln/waku-rln-relay/v2.0.0"
+    )
   ) {}
 
   public get getZkRLN(): number {
@@ -26,10 +33,117 @@ export class Zerokit {
   public generateSeededIdentityCredential(seed: string): IdentityCredential {
     const stringEncoder = new TextEncoder();
     const seedBytes = stringEncoder.encode(seed);
-    const memKeys = zerokitRLN.generateSeededExtendedMembershipKey(
+    const memKeys = generateSeededExtendedMembershipKey(seedBytes, true);
+    return IdentityCredential.fromBytes(memKeys);
+  }
+
+  public async serializeWitness(
+    idSecretHash: Uint8Array,
+    pathElements: Uint8Array[],
+    identityPathIndex: Uint8Array[],
+    x: Uint8Array,
+    epoch: Uint8Array,
+    rateLimit: number,
+    messageId: number // number of message sent by the user in this epoch
+  ): Promise<Uint8Array> {
+    const externalNullifier = poseidonHash(
+      sha256(epoch),
+      sha256(this.rlnIdentifier)
+    );
+    const pathElementsBytes = new Uint8Array(8 + pathElements.length * 32);
+    BytesUtils.writeUIntLE(pathElementsBytes, pathElements.length, 0, 8);
+    for (let i = 0; i < pathElements.length; i++) {
+      // We assume that the path elements are already in little-endian format
+      pathElementsBytes.set(pathElements[i], 8 + i * 32);
+    }
+    const identityPathIndexBytes = new Uint8Array(
+      8 + identityPathIndex.length * 1
+    );
+    BytesUtils.writeUIntLE(
+      identityPathIndexBytes,
+      identityPathIndex.length,
+      0,
+      8
+    );
+    for (let i = 0; i < identityPathIndex.length; i++) {
+      // We assume that each identity path index is already in little-endian format
+      identityPathIndexBytes.set(identityPathIndex[i], 8 + i * 1);
+    }
+    return BytesUtils.concatenate(
+      idSecretHash,
+      BytesUtils.writeUIntLE(new Uint8Array(32), rateLimit, 0, 32),
+      BytesUtils.writeUIntLE(new Uint8Array(32), messageId, 0, 32),
+      pathElementsBytes,
+      identityPathIndexBytes,
+      x,
+      externalNullifier
+    );
+  }
+
+  public async generateRLNProof(
+    msg: Uint8Array,
+    index: number, // index of the leaf in the merkle tree
+    epoch: Uint8Array | Date | undefined,
+    idSecretHash: Uint8Array,
+    pathElements: Uint8Array[],
+    identityPathIndex: Uint8Array[],
+    rateLimit: number,
+    messageId: number // number of message sent by the user in this epoch
+  ): Promise<Uint8Array> {
+    if (epoch === undefined) {
+      epoch = epochIntToBytes(dateToEpoch(new Date()));
+    } else if (epoch instanceof Date) {
+      epoch = epochIntToBytes(dateToEpoch(epoch));
+    }
+
+    if (epoch.length !== 32) throw new Error("invalid epoch");
+    if (idSecretHash.length !== 32) throw new Error("invalid id secret hash");
+    if (index < 0) throw new Error("index must be >= 0");
+    if (
+      rateLimit < RATE_LIMIT_PARAMS.MIN_RATE ||
+      rateLimit > RATE_LIMIT_PARAMS.MAX_RATE
+    ) {
+      throw new Error(
+        `Rate limit must be between ${RATE_LIMIT_PARAMS.MIN_RATE} and ${RATE_LIMIT_PARAMS.MAX_RATE}`
+      );
+    }
+
+    const x = sha256(msg);
+
+    const serializedWitness = await this.serializeWitness(
+      idSecretHash,
+      pathElements,
+      identityPathIndex,
+      x,
+      epoch,
+      rateLimit,
+      messageId
+    );
+    const witnessJson: Record<string, unknown> = zerokitRLN.rlnWitnessToJson(
       this.zkRLN,
-      seedBytes
+      serializedWitness
+    ) as Record<string, unknown>;
+    const calculatedWitness: bigint[] =
+      await this.witnessCalculator.calculateWitness(witnessJson);
+    return zerokitRLN.generateRLNProofWithWitness(
+      this.zkRLN,
+      calculatedWitness,
+      serializedWitness
+    );
+  }
+
+  public verifyRLNProof(
+    signalLength: Uint8Array,
+    signal: Uint8Array,
+    proof: Uint8Array,
+    roots: Uint8Array[]
+  ): boolean {
+    if (signalLength.length !== 8)
+      throw new Error("signalLength must be 8 bytes");
+    return zerokitRLN.verifyWithRoots(
+      this.zkRLN,
+      BytesUtils.concatenate(proof, signalLength, signal),
+      BytesUtils.concatenate(...roots)
     );
-    return IdentityCredential.fromBytes(memKeys);
   }
 }
diff --git a/packages/rln/tsconfig.dev.json b/packages/rln/tsconfig.dev.json
index 96c99dc461..d53a621c4f 100644
--- a/packages/rln/tsconfig.dev.json
+++ b/packages/rln/tsconfig.dev.json
@@ -1,3 +1,4 @@
 {
-  "extends": "../../tsconfig.dev"
-} 
\ No newline at end of file
+  "extends": "../../tsconfig.dev",
+  "exclude": ["wagmi.config.ts"]
+}
diff --git a/packages/rln/tsconfig.json b/packages/rln/tsconfig.json
index 6f8756934b..f31944719d 100644
--- a/packages/rln/tsconfig.json
+++ b/packages/rln/tsconfig.json
@@ -6,5 +6,5 @@
     "tsBuildInfoFile": "dist/.tsbuildinfo"
   },
   "include": ["src"],
-  "exclude": ["src/**/*.spec.ts", "src/test_utils"]
-} 
\ No newline at end of file
+  "exclude": ["wagmi.config.ts", "src/**/*.spec.ts", "src/test_utils"]
+}
diff --git a/packages/rln/wagmi.config.ts b/packages/rln/wagmi.config.ts
new file mode 100644
index 0000000000..bffe3f0576
--- /dev/null
+++ b/packages/rln/wagmi.config.ts
@@ -0,0 +1,18 @@
+import { defineConfig } from "@wagmi/cli";
+import { foundry } from "@wagmi/cli/plugins";
+
+export default defineConfig({
+  out: "src/contract/wagmi/generated.ts",
+  plugins: [
+    foundry({
+      project: "./waku-rlnv2-contract",
+      artifacts: "out",
+      include: [
+        "WakuRlnV2.sol/**",
+        "Membership.sol/**",
+        "LinearPriceCalculator.sol/**",
+        "IPriceCalculator.sol/**"
+      ]
+    })
+  ]
+});