chain_subscribeNewHeads – Mythos JSON-RPC Method

Subscribes to every new block header produced by Mythos, regardless of finality. Use this call for dashboards, live mint trackers, or monitoring collator performance.

Parameters

This subscription takes no parameters.

Example (JavaScript)

import { ApiPromise, WsProvider } from '@polkadot/api';

const provider = new WsProvider('wss://api-mythos-archive.n.dwellir.com/YOUR_API_KEY');
const api = await ApiPromise.create({ provider });

const unsubscribe = await api.rpc.chain.subscribeNewHeads((header) => {
  console.log(`New Mythos head #${header.number}:`, header.hash.toHex());
});

Notes

• Headers streamed through this method are not yet finalized; pair with chain_subscribeFinalizedHeads or chain_getFinalizedHead when a finalized view is required.
• Efficiently cache metadata and decoding logic to handle bursts during high-traffic events.

Related Methods

• chain_getHeader
• chain_subscribeFinalizedHeads
• grandpa_roundState