SDK v1 Example

examplesv1/README.md

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+```bash
+yarn
+```
+
+```bash
+yarn ts-node createAndUpdate
+```

examplesv1/package.json

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+{
+  "name": "examplesv1",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "@kiltprotocol/sdk-js": "1.0.0-alpha.2",
+    "@polkadot/util-crypto": "^13.0.2",
+    "axios": "^1.5.1"
+  },
+  "devDependencies": {
+    "typescript": "^5.5.4"
+  }
+}

examplesv1/src/createAndUpdate.ts

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+import * as Kilt from '@kiltprotocol/sdk-js'
+import { Crypto } from '@kiltprotocol/utils'
+import { mnemonicGenerate, randomAsU8a } from '@polkadot/util-crypto'
+
+async function createDid() {
+
+  // Create a connection to a KILT blockchain.
+  // let api = await Kilt.connect('wss://peregrine.kilt.io/')
+  let api = await Kilt.connect('ws://localhost:9944/')
+
+  // Create keypair, of which the DID will be derived.
+  const mnemonic = mnemonicGenerate()
+  const didKeypair = Crypto.makeKeypairFromUri(mnemonic, 'sr25519')
+
+  // The submitter account must have enough funds to cover the deposit costs.
+  const submitterMnemonic =
+    'build hill second flame trigger simple rigid cabbage phrase evolve final eight'
+  const submitter = Crypto.makeKeypairFromUri(submitterMnemonic, 'sr25519')
+
+  // ┏━━━━━━━━━━━━┓
+  // ┃ create DID ┃
+  // ┗━━━━━━━━━━━━┛
+  //
+  // Generate the DID-signed creation tx and submit it to the blockchain with the specified account.
+  // The DID Document will have one Verification Key with an authentication relationship.
+  //
+  // Note the following parameters:
+  // - `api`: The connected blockchain api.
+  // - `signers`: The keys for verification materials inside the DID Document. For creating a DID,
+  // only the key for the verification method is required.
+  // - `submitter`: The account used to submit the transaction to the blockchain. Note: the submitter account must have
+  // enough funds to cover the required storage deposit.
+  // - `fromPublicKey`: The public key that will feature as the DID's initial authentication method and will determine the DID identifier.
+
+  let transactionHandler = Kilt.DidHelpers.createDid({
+    api,
+    signers: [didKeypair],
+    submitter,
+    fromPublicKey: didKeypair,
+  })
+
+  // The `createDid` function returns a transaction handler, which includes two methods:
+  // - `submit`: Submits a transaction for inclusion in a block, resulting in its execution in the blockchain runtime.
+  // - `getSubmittable`: Produces transaction that can be submitted to a blockchain node for inclusion, or signed and submitted by an external service.
+
+  // Submit transaction.
+  // Note: `submit()` by default, waits for the block to be finalized. This behaviour can be overwritten
+  // in the function's optional parameters.
+  const didDocumentTransactionResult = await transactionHandler.submit()
+
+  // Once the transaction is submitted, the result should be checked.
+  // For the sake of this example, we will only check if the transaction went through.
+  if (didDocumentTransactionResult.status !== 'confirmed') {
+    console.error('create DID failed')
+    return
+  }
+
+  // Get the DID Document from the transaction result.
+  let { didDocument } = didDocumentTransactionResult.asConfirmed
+
+  // ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
+  // ┃ Create Verification Method ┃
+  // ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
+  //
+  // - `DidHelpers` include a function to add a verification methods.
+  // Similar to `createDid`, setting a verification method requires some parameters.
+  //
+  // - `didDocument` is the latest state of the DID Document that shall be updated.
+  // - `signers` includes all the keypairs included in the DID documents and necessary for the
+  // specified operation, in this case, the keypair of the authentication key, which is necessary to
+  // allow updates to the DID Document.
+  // - `publicKey` is the key used for the verification method.
+  //
+  // Note: setting a verification method will remove any existing method for the specified relationship.
+
+  // TODO: use mnemonic here.
+  const seed = randomAsU8a(32)
+  const keyAgreementKeypair = Crypto.makeEncryptionKeypairFromSeed(seed)
+  const vmTransactionResult = await Kilt.DidHelpers.setVerificationMethod({
+    api,
+    didDocument,
+    signers: [didKeypair],
+    submitter,
+    publicKey: keyAgreementKeypair,
+    relationship: 'keyAgreement',
+  }).submit()
+
+  if (vmTransactionResult.status !== 'confirmed') {
+    console.error('add verification method failed')
+    return
+  }
+  ; ({ didDocument } = vmTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━━┓
+  // ┃ Claim web3name  ┃
+  // ┗━━━━━━━━━━━━━━━━━┛
+  const claimW3nTransactionResult = await Kilt.DidHelpers.claimWeb3Name({
+    api,
+    didDocument,
+    submitter,
+    signers: [didKeypair],
+    name: 'example123',
+  }).submit()
+
+  if (claimW3nTransactionResult.status !== 'confirmed') {
+    console.error('claim web3name failed')
+    return
+  }
+
+  // TODO: does the DID Document change after adding a w3n?
+  ; ({ didDocument } = claimW3nTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━┓
+  // ┃ Add a service  ┃
+  // ┗━━━━━━━━━━━━━━━━┛
+  const addServiceTransactionResult = await Kilt.DidHelpers.addService({
+    api,
+    submitter,
+    signers: [didKeypair],
+    didDocument,
+    // TODO:  change service endpoint.
+    service: {
+      id: '#my_service',
+      type: ['http://schema.org/EmailService'],
+      serviceEndpoint: ['mailto:[email protected]'],
+    },
+  }).submit()
+
+  if (addServiceTransactionResult.status !== 'confirmed') {
+    console.error('add service failed')
+    return
+  }
+  ; ({ didDocument } = addServiceTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
+  // ┃ Remove a Verification Method ┃
+  // ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
+  //
+  // Removing a verification method can be done by specifying its id.
+  //
+  // Note:
+  // - The provided `didDocument` must include the specified verification method.
+  // - The authentication verification method can not be removed.
+  const removeVmTransactionResult =
+    await Kilt.DidHelpers.removeVerificationMethod({
+      api,
+      didDocument,
+      signers: [didKeypair],
+      submitter,
+      verificationMethodId: didDocument.keyAgreement![0],
+      relationship: 'keyAgreement',
+    }).submit()
+
+  if (removeVmTransactionResult.status !== 'confirmed') {
+    console.error('remove verification method failed')
+    return
+  }
+  ; ({ didDocument } = removeVmTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━━━┓
+  // ┃ Release web3name ┃
+  // ┗━━━━━━━━━━━━━━━━━━┛
+  //
+  // A web3name can be released from a DID and potentially claimed by another DID.
+  const releaseW3nTransactionResult = await Kilt.DidHelpers.releaseWeb3Name({
+    api,
+    didDocument,
+    submitter,
+    signers: [didKeypair],
+  }).submit()
+
+  if (releaseW3nTransactionResult.status !== 'confirmed') {
+    console.error('release web3name failed')
+    return
+  }
+  ; ({ didDocument } = releaseW3nTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━━━┓
+  // ┃ Remove a service ┃
+  // ┗━━━━━━━━━━━━━━━━━━┛
+  //
+  // Services can be removed by specifying the service `id`
+  const removeServiceTransactionResult = await Kilt.DidHelpers.removeService({
+    api,
+    submitter,
+    signers: [didKeypair],
+    didDocument,
+    id: '#my_service',
+  }).submit()
+
+  if (removeServiceTransactionResult.status !== 'confirmed') {
+    console.error('remove service failed')
+    return
+  }
+  ; ({ didDocument } = removeServiceTransactionResult.asConfirmed)
+
+  // ┏━━━━━━━━━━━━━━━━━━┓
+  // ┃ Deactivate a DID ┃
+  // ┗━━━━━━━━━━━━━━━━━━┛
+  //
+  // _Permanently_ deactivate the DID, removing all verification methods and services from its document.
+  // Deactivating a DID cannot be undone, once a DID has been deactivated, all operations on it (including attempts at re-creation) are permanently disabled.
+  const deactivateDidTransactionResult = await Kilt.DidHelpers.deactivateDid({
+    api,
+    submitter,
+    signers: [didKeypair],
+    didDocument,
+  }).submit()
+
+  if (deactivateDidTransactionResult.status !== 'confirmed') {
+    console.error('deactivate DID failed')
+    return
+  }
+  ; ({ didDocument } = deactivateDidTransactionResult.asConfirmed)
+
+
+  // Release the connection to the blockchain.
+  await api.disconnect()
+}
+createDid().then(() => { })

examplesv1/tsconfig.json

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+{
+  "ts-node": {
+    "compilerOptions": {
+      "module": "commonjs"
+    }
+  },
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "moduleResolution": "node",
+    "skipLibCheck": true,
+    "target": "ES2020",
+    "module": "es2022"
+  }
+}