beefy_getFinalizedHead - Bittensor RPC Method

Returns the block hash of the latest BEEFY-finalized block on Bittensor. BEEFY (Bridge Efficiency Enabling Finality Yielder) provides additional finality proofs that are optimized for light clients and cross-chain bridges, using compact aggregated signatures instead of full GRANDPA justifications.

Why Bittensor? Build on the decentralized machine intelligence network built around subnets, TAO staking, and validator-miner coordination with Yuma Consensus, subnet-based specialization, dual Substrate and EVM surfaces, and onchain incentive coordination.

When to Use This Method

beefy_getFinalizedHead is not currently exposed on Dwellir's public Bittensor RPC. Use finalized-block signals from supported chain-RPC methods instead.

• Finalized head reads — Use chain_getFinalizedHead for the current finalized block hash
• Realtime finalized updates — Subscribe to chain_subscribeFinalizedHeads for push updates

Code Examples

Alternative Monitoring Patterns on Bittensor

Because Bittensor does not expose beefy_getFinalizedHead on this shared surface, use these finalized-block signals instead.

1. Check latest finalized hash directly

Use chain_getFinalizedHead for a simple on-demand read of finalized head:

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

const provider = new WsProvider('wss://...');
const api = await ApiPromise.create({ provider });

const finalizedHash = await api.rpc.chain.getFinalizedHead();
console.log('Finalized block:', finalizedHash.toHex());

2. Stream finalized heads

Use chain_subscribeFinalizedHeads when you need push-based finalized updates for downstream systems.

const unsubscribe = await api.rpc.chain.subscribeFinalizedHeads((header) => {
  console.log(`Finalized block #${header.number.toString()}: ${header.hash.toHex()}`);
});

BEEFY vs GRANDPA Finality

Availability

BEEFY is enabled on Polkadot and Kusama relay chains and some parachains. If BEEFY is not active on the chain you are querying, this method will return an error. Check chain documentation or try calling the method to confirm availability.

Error Handling

Related Methods

• chain_getFinalizedHead — Get GRANDPA finalized head
• grandpa_roundState — Monitor GRANDPA consensus state
• chain_subscribeFinalizedHeads — Subscribe to GRANDPA finalized blocks