[Standard] Polkadot SDK Upgrade to polkadot-stable2512-3

Scheduled Maintenance Report for Quicknode

Completed

The scheduled maintenance has been completed.
Posted Apr 01, 2026 - 14:00 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Apr 01, 2026 - 09:00 UTC

Scheduled

We are upgrading our Polkadot SDK nodes to `polkadot-stable2512-3`. During the maintenance window, brief interruptions may occur. This release contains networking stability fixes, collator sync improvements, and staking-related bug fixes.

API Changes:
`pallet-democracy / referenda` — Voted and VoteRemoved events modified
Both events now include a poll_index field. Indexers or event decoders consuming these events will need to be updated to handle the new field.
`pallet-balances` — new events added
Several previously missing balance events are now emitted. Indexers should be updated to handle the new event types.
`pallet-bags-list` — ScoreUpdated event modified
This event is now only emitted when the score actually changes. Consumers expecting it on every operation will see reduced event frequency.

https://github.com/paritytech/polkadot-sdk/releases/tag/polkadot-stable2512-3
Posted Mar 26, 2026 - 20:09 UTC
This scheduled maintenance affected: Polkadot (Mainnet - JSON RPC API, Mainnet - Websockets API, Mainnet - substrate-api-sidecar).