Resumed

Event v101 → current #2

Emitted when GRANDPA finality resumes after being paused.

Useful for: validatorsdevelopersanalytics

The Big Picture

After a pause (for upgrades, incident response, etc.), resuming GRANDPA restores full finality. The finality gadget will quickly catch up, finalizing blocks that accumulated during the pause. This event signals the network is back to full security guarantees.

Use Cases

Monitor recovery from finality disruptions
Build alerts for consensus resumption
Resume dependent systems after finality is restored
Track governance actions restoring normal operation

From Chain Metadata

Current authority set has been resumed.

Triggers

Preconditions

GRANDPA was previously paused
Governance or root triggered the resume

Effects

Postconditions

GRANDPA resumes finalizing blocks
Finality will catch up to tip
State storage reflects live status

Side Effects

May trigger rapid finalization of pending blocks
Light clients can resume syncing
Cross-chain bridges can resume

This event has no data fields.

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Subscribe to Resumed events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("Grandpa") &&
      event.method === "Resumed"
    )
    .forEach(({ event }) => {
      console.log("Resumed:", event.data.toHuman());
    });
});

Runtime Info

Pallet Index: 4
Event Index: 2
First Version: v101
Current Version: v393

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