Polkadot v0.8.24

Upgrade priority: Medium (timely upgrade recommended) due to changes: Bump Nominator Reward Limits (#1668), Ensure that handshake is sent back even in case of back-pressure (paritytech/substrate#6979), Fix storage::read (paritytech/substrate#7084), Upgrade to libp2p-0.28. (paritytech/substrate#7077), Allow remotes to not open a legacy substream (paritytech/substrate#7075), Move Staking Weights to T::WeightInfo (paritytech/substrate#7007)

Note: Due to change #7077, the compatibility mode between peer IDs using identity hashing and sha256 has been removed. See libp2p-core changelog for details

With this release, we are proud to announce our Debian- and RPM-based package repositories. Instructions on enabling them for your distro can be found here in our README. As well as enabling node operators to securely stay up-to-date with our latest releases, we are also packaging a systemd service file which makes running Polkadot as a service much easier and takes advantage of systemd's sandboxing and namespacing features to improve security.

Note: If you are running polkadot as a systemd service with your own service file located in /etc/systemd/system/, this service file will take precedence over the packaged service file located at /lib/systemd/system/. If you wish to continue using your own service file but use our packaged binary, you may have to edit your service file to point to the packaged binary's location: /usr/bin/polkadot. A short guide on switching to our managed repositories can be found here

Native runtimes:

• Polkadot: 24
• Kusama: 2024
• Westend: 43

This release was tested against the following versions of rustc. Other versions may work.

• rustc 1.46.0 (04488afe3 2020-08-24)
• rustc 1.48.0-nightly (6af1bdda5 2020-09-15)

WASM runtimes built with srtool using rustc 1.47.0-nightly (d7f945163 2020-07-19).

Proposal hashes:

• polkadot_runtime-v24.compact.wasm - 0x6457aeaa4809aee001143b00291f91ac4997491e7de51fba626f8863928a9180
• kusama_runtime-v2024.compact.wasm - 0x0cb784cdbf285d1d1bfef948967a4fea9038d3884ad78604b5ef6bc69c61e11a

Client

• Fix benchmark database wipe for child tries. (paritytech/substrate#6965)
• Implement request-responses protocols (paritytech/substrate#6634)
• Move subcommands from sc-cli to nodes (paritytech/substrate#6948)
• manual seal is now consensus agnostic (paritytech/substrate#7010)
• Update the service tasks Grafana dashboard (paritytech/substrate#7038)
• Support hex encoded secret key for --node-key (paritytech/substrate#7052)
• Fix storage::read (paritytech/substrate#7084)
• Allow remotes to not open a legacy substream (paritytech/substrate#7075)

Runtime

• ✅ trivial Remove Purchase Pallet from Polkadot + Westend (#1636)
• ✅ trivial Bump Nominator Reward Limits (#1668)
• ✅ trivial add generated weight info for pallet-collective (paritytech/substrate#6789)
• ✅ audited frame/authority-discovery: Have authorities() return both current and next (paritytech/substrate#6788)
• ✅ trivial add instantiable support for treasury pallet (paritytech/substrate#7058)
• ✅ trivial pallet-collective: allow customized default vote (paritytech/substrate#6984)

Polkadot v0.8.23

Upgrade priority: Medium (timely upgrade recommended) due to changes: Remove v0 node-side parachains code (#1609), Block packet size limit (paritytech/substrate#6398), Move to upstream wasmtime, refactor globals snapshot (paritytech/substrate#6759), Update to libp2p-0.23. (paritytech/substrate#6870), Distribute the network future polling time more evenly (paritytech/substrate#6903), Better prime election. (paritytech/substrate#6939)

Native runtimes:

• Polkadot: 23
• Kusama: 2023
• Westend: 43

This release was tested against the following versions of rustc. Other versions may work.

• rustc 1.45.2 (d3fb005a3 2020-07-31)
• rustc 1.47.0-nightly (bf4342114 2020-08-25)

WASM runtimes built with srtool using rustc 1.47.0-nightly (d7f945163 2020-07-19).

Proposal hashes:

• polkadot_runtime-v23.compact.wasm - 0x8dedaee731310e86edd95589a018250eab1c6a3587260688203d72c8daa73fb8
• kusama_runtime-v2023.compact.wasm - 0x0bfdc8d06c4e791aa83d4d040129f03202764544920913354f8bf9100707e51f

Changes

• companion PR for #5732: pubsub RPC for grandpa justifications (#1346)
• Remove v0 node-side parachains code (#1609)

Client

• Allow task manager to have children (paritytech/substrate#6771)
• Revalidate transactions only on latest best block (paritytech/substrate#6824)
• Move to upstream wasmtime, refactor globals snapshot (paritytech/substrate#6759)
• Implement tracing::Event handling & parent_id for spans and events (paritytech/substrate#6672)
• client/authority-discovery: Introduce AuthorityDiscoveryService (paritytech/substrate#6760)
• RpcHandlers Refactorings (paritytech/substrate#6846)
• Merge Subkey into sc-cli (paritytech/substrate#4954)
• *: Update to next libp2p version 0.24.0 (paritytech/substrate#6891)
• Fix benchmark read/write key tracker for keys in child storages. (paritytech/substrate#6905)

Runtime

• ✅ trivial Remove v0 parachains runtime (#1501)
• ✅ trivial Update Kusama Council seats & Runners Up number (#1614)
• ✅ audited Custom Codec Implementation for NPoS Election (paritytech/substrate#6720)
• ✅ audited Time-delay proxies (paritytech/substrate#6770)
• ✅ trivial Support Staking Payout to Any Account (paritytech/substrate#6832)

Polkadot v0.8.22

Upgrade priority: Upgrade priority:❗ HIGH ❗ Please upgrade your node as soon as possible

Native runtimes:

• Polkadot: 22
• Kusama: 2022
• Westend: 42

This release was tested against the following versions of rustc. Other versions may work.

• rustc 1.45.2 (d3fb005a3 2020-07-31)
• rustc 1.47.0-nightly (22ee68dc5 2020-08-05)

WASM runtimes built with srtool using rustc 1.47.0-nightly (d7f945163 2020-07-19)

Proposal hashes:

• polkadot_runtime-v22.compact.wasm - 0xb69f4e844a1dfa3a193aa210f987d56e131d5882aa4c1c3a9d62431b522c3cc1
• kusama_runtime-v2022.compact.wasm - 0x6975814bb68dab14291fa9d07ff4edac6483a5eca1548e4919f3cd84c1494d74

Client

• Update wasmtime to (almost) lastest master (paritytech/substrate#6662)
• Name all the tasks! (paritytech/substrate#6726)
• client/network: Add peers to DHT only if protocols match (paritytech/substrate#6549)
• client/network: Expose DHT query duration to Prometheus (paritytech/substrate#6784)

Runtime

• ✅ trivial Companion for #6610 (Balances Weight Trait) (#1425)
• ✅ trivial Add Rococo test network (#1363)
• ✅ trivial Companion PR: add weightinfo for democracy (#1522)
• ✅ unused Support using system storage directly for EVM balance and nonce (paritytech/substrate#6659)
• ✅audited grandpa: allow noting that the set has stalled (paritytech/substrate#6725)
• ✅ unused pallet-evm: add support for tuple-based precompile declarations (paritytech/substrate#6681)
• ✅ audited Allow PostDispatchInfo to disable fees (paritytech/substrate#6749)
• ✅ unused pallet-evm: add builtin support for the four basic Ethereum precompiles (paritytech/substrate#6743)
• ✅ trivial Update Balances Pallet to use WeightInfo (paritytech/substrate#6610)
• ✅ trivial pallet-democracy use of weightinfo (paritytech/substrate#6783)
• ✅ audited Successful note_imminent_preimage is free (paritytech/substrate#6793)

Polkadot v0.8.19

Upgrade priority: Medium (timely upgrade recommended) - due to change(s): Update to latest sysinfo prevents leaking fd-handlers (paritytech/substrate#6708) Graceful shutdown for the task manager (paritytech/substrate#6654) Update libp2p to 0.22. (paritytech/substrate#6690)

Native runtimes:

• Polkadot: 19
• Kusama: 2019
• Westend: 39

The polkadot binary was built with the following versions of rustc. Other versions may work.

• rustc 1.45.0 (5c1f21c3b 2020-07-13)
• rustc 1.47.0-nightly (f9a308636 2020-07-20)

WASM runtimes built with srtool using rustc 1.47.0-nightly (d7f945163 2020-07-19).

Proposal hashes:

• polkadot_runtime-v19.compact.wasm - 0xd310d9bc8f201e8979ff7610e945392757dc32691570a0db9fcb8f48ead22ec5
• kusama_runtime-v2019.compact.wasm - 0x3328f11ff5af9e44c4834b79e6255965e56f26e2d69d5e125116e76e0b5ff967

Client

• Medium Update to latest sysinfo prevents leaking fd-handlers (paritytech/substrate#6708)
• Tracing values (paritytech/substrate#6679)
• Medium Graceful shutdown for the task manager (paritytech/substrate#6654)

Runtime

• ✅ trivial Properly filter out duplicate voters in elections. (paritytech/substrate#6693)

Polkadot v0.8.18

Upgrade priority: Low (upgrade at your convenience)

Native runtimes:

• Polkadot: 18
• Kusama: 2018
• Westend: 38

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.44.1 (c7087fe00 2020-06-17)
• rustc 1.46.0-nightly (9d09331e0 2020-07-12)

Proposal hashes:

• polkadot_runtime.compact.wasm - 0xd2d18f5066ac84b98fa9eaff4f273c4da9cfd871136c3cbfa4896c6942c017e2
• kusama_runtime.compact.wasm - 0x6bb4da779b8e647cbe130377e3a9f1c87e7c59a440f586368c579d6ded8a246e

Runtime

• Enable transfers (#1443)

Polkadot v0.8.17

Upgrade priority: Low (upgrade at your convenience)

Native runtimes:

• Polkadot: 17
• Kusama: 2017
• Westend: 37

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.44.1 (c7087fe00 2020-06-17)
• rustc 1.46.0-nightly (9d09331e0 2020-07-12)

Proposal hashes:

• polkadot_runtime.compact.wasm - 0xf86bf558643352cdfd4b6ebc74e5ef41afad5b73e41b157a59945253f48765be
• kusama_runtime.compact.wasm - 0xc82a716c521d20313f920f710894e9b061b9e6f1e5575d871e3dc346b236d74d

Runtime

• Remove Sudo (#1437)

Polkadot CC1 v0.8.16

Upgrade priority: Low (upgrade at your convenience)

Native runtimes:

• Polkadot: 16
• Kusama: 2016
• Westend: 36

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.45.0 (5c1f21c3b 2020-07-13)
• rustc 1.47.0-nightly (d7f945163 2020-07-19)

Runtime

• Enable full governance (#1433)

Polkadot CC1 v0.8.15

Upgrade priority: Medium (timely update recommended) - due to change(s): Make signature batching use specialized methods (paritytech/substrate#6616)

PLEASE NOTE: This is a pre-release; Kusama nodes encouraged to upgrade. Polkadot nodes may wish to wait 2-3 days.

Native runtimes:

• Polkadot: 15
• Kusama: 2015
• Westend: 35

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.44.1 (c7087fe00 2020-06-17)
• rustc 1.46.0-nightly (9d09331e0 2020-07-12)

Changes

• Medium *: Enable authority discovery by default (#1395)

Client

• Update substrate-networking Grafana dashboard (paritytech/substrate#6649)

Runtime

• Pallet for Purchase in Polkadot (#1369)
• Define BurnDestination, Kusama Treasury burns to Society (#6671) (#1421)
• Medium Enable Polkadot council elections (#1422)
• Treasury burning can be directed (paritytech/substrate#6671)
• Medium identity: Don't let subs be re-registered (paritytech/substrate#6667)
• Regression test to ensure we don't break deterministic builds in wasm (paritytech/substrate#6597)
• allow to specify schedule time as a relative value (paritytech/substrate#6578)
• Medium Make signature batching use specialized methods (paritytech/substrate#6616)

Polkadot CC1 v0.8.14

Upgrade priority: Medium (timely upgrade recommended) - due to change(s): Improve transaction submission (paritytech/substrate#6599), Send Status message on all newly-opened legacy substreams (paritytech/substrate#6593)

Native runtimes:

• Polkadot: 14
• Kusama: 2014
• Westend: 34

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.44.1 (c7087fe00 2020-06-17)
• rustc 1.46.0-nightly (16957bd4d 2020-06-30)

Changes

• babe: Enable equivocation reporting on all runtimes (#1330)

Client

• Medium network: Send Status message on all newly-opened legacy substreams (paritytech/substrate#6593)
• network: Update to libp2p v0.21.1 (paritytech/substrate#6559)
• babe: Report equivocations (paritytech/substrate#6362)

Runtime

• Introduce polling pallet (#1391)
• Reduce Westend deposit requirements (#1341)
• Rename CheckEra to CheckMortality (paritytech/substrate#6619)
• Add WeightInfo to all pallets with benchmarks. (paritytech/substrate#6575)
• Don't require module name in inherents (paritytech/substrate#6576)
• Make the encoded-Call Vec<u8> explicitly so in metadata (paritytech/substrate#6566)
• Allow to specify Schedule dispatch origin (paritytech/substrate#6387)

Polkadot CC1 v0.8.13

Upgrade priority: Medium (timely upgrade recommended) - due to change(s): Fix tx-pool returning the same transaction multiple times (paritytech/substrate#6535)

Native runtimes:

• Polkadot: 13
• Kusama: 2013
• Westend: 33

This release was built with the following versions of rustc. Other versions may work.

• rustc 1.44.1 (c7087fe00 2020-06-17)
• rustc 1.46.0-nightly (67100f61e 2020-06-24)

Client

• Support synching of blocks that are not new_best (paritytech/substrate#6508)
• Remove the service, replacing it with a struct of individual chain components (paritytech/substrate#6352)
• Medium Fix tx-pool returning the same transaction multiple times (paritytech/substrate#6535)

Runtime

• Downward & upward messages (#1266)
• Add registrar proxy (#1296)
• Allow voting in democracy (#1331)
• Refactor as_sub to make things clearer (paritytech/substrate#6503)
• Staking payout creates controller (paritytech/substrate#6496)