CodeUpdated

Event v101 → current #2

Emitted when the runtime code is updated.

View events on chain

From Chain Metadata

`:code` was updated.

Triggers

Preconditions

  • Valid runtime upgrade authorized
  • New code is valid WASM

Effects

Postconditions

  • New runtime code in effect
  • Spec version typically incremented

Side Effects

  • All nodes must update to new runtime
  • May change behavior of existing calls

This event has no data fields.

Code Examples

import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443

const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);

// Subscribe to CodeUpdated events
client.finalizedBlock$.subscribe(async (block) => {
  const events = await api.event.System.CodeUpdated.get(block.hash);
  for (const evt of events) {
    console.log("CodeUpdated:", evt.payload);
  }
});

Runtime Info

Pallet Index
0
Event Index
2
First Version
v101
Current Version
v411
Back to System Events