Description
This release upgrades the Astar runtimes to Polkadot SDK stable2512 (and the corresponding Frontier version), bringing the latest upstream improvements, fixes, and compatibility updates.
⚠️ Node operators: Both collator and archive/RPC nodes should be upgraded to the v5.50.0 client together with this runtime upgrade. While older binaries remain consensus-compatible for a short period, they are not fully compatible with this runtime and will experience issues with EVM tracing, XCM payment RPCs, relay-chain peer signalling, and other RPC functionality.
In addition to the SDK uplift, this release:
- Reduces the minimum number of collator candidates to 1.
- Sets Relay Parent Offset (RPO) to 0.
- Includes the latest stable2512 backports, dependency updates, and CI improvements.
Runtimes
Shibuya
✨ spec_version: 2300
🏋 Runtime Size: 1999109
🗜 Compressed: Yes
🎁 Metadata version: 14
🗳️ sha256: 0x3c7295c2159bd973a79d6066e4966b7081797098fe46ee17b8814a3eb5b2d024
🗳️ blake2-256: 0x345f7e433ae2dc15215936a207bab7f7d424c60ae0345842ebb4263e22e42ca0
📦 IPFS: QmPWwhzRPSa5qMP1nc6FNShGNB4F2Bo11WitDAgkaDh2v6
Shiden
✨ spec_version: 2300
🏋 Runtime Size: 1870388
🗜 Compressed: Yes
🎁 Metadata version: 14
🗳️ sha256: 0x370639caa2313ba1afe90ec5d220656f46b4d84cdf2987357be224ec190df39e
🗳️ blake2-256: 0xd1c7e0b253da2d14294a77a01d742c235290f0c7fba5bf0467ebc5c012bdd696
📦 IPFS: QmbvdFEvx4D8iNXuB91JM2Ak3eeRNuSxHsWNwPgtWVCpgf
Astar
✨ spec_version: 2300
🏋 Runtime Size: 1988317
🗜 Compressed: Yes
🎁 Metadata version: 14
🗳️ sha256: 0x2aa36adb05bb2baddafc83ba2efea8f17a56b3aedb5b6822f5076d8e87d8cd16
🗳️ blake2-256: 0xf4936acd5a4abda6114f4a5e4bcc41ed16189547fa5f0fc5e3d74dc62330a926
📦 IPFS: QmXuEayLfyB59AsidScoJ4c8c5u1skXgwHFvhjBoAGHnQG
Build Info
WASM runtime built using rustc 1.93.0 (254b59607 2026-01-19)
Changes
Runtime
- chore: uplift Polkadot SDK + Frontier to
stable2512(#1643) - chore: prep release
runtime-2300/ clientv5.50.0(#1647) - feat: MinCandidates reduces to 1 & latest stable2512 backport (#1652)
- chore: Shibuya RPO=0 (#1659)
- chore: Astar/Shiden RPO=0 (#1660)
Others
- fix: use relay-parent-offset in mocked timestamp (#1649)
- ci: bump actions and node versions (#1650)
- Fix/ci runtime upgrade check and frontier tests (#1653)
- chore(deps): bump form-data from 4.0.5 to 4.0.6 in /tests/e2e (#1651)
- chore(deps): bump undici from 6.26.0 to 6.27.0 in /tests/e2e (#1655)
- chore(deps): bump serde_with from 3.16.1 to 3.21.0 (#1658)
- chore(deps): bump axios from 1.17.0 to 1.18.1 in /tests/e2e (#1661)
- chore(deps): bump brace-expansion from 2.1.1 to 2.1.2 in /tests/e2e (#1662)
- chore(deps): bump tar from 7.5.16 to 7.5.20 in /tests/e2e (#1663)
- chore(deps): bump js-yaml from 4.2.0 to 4.3.0 in /tests/e2e (#1664)
Recommended sidecar version:
- recommendation is to use v20.14.0 (link)
Dependency Changes
Astar: runtime-2208...runtime-2300
Polkadot-sdk: paritytech/polkadot-sdk@93b592c...ba6a0d2
Frontier: AstarNetwork/frontier@20314b6...6794756