Authorities

Storage Plain v151 → current

List of current GRANDPA authorities (public keys with voting weights ).

Queried by: validatorsdevelopersanalytics

The Big Picture

This is the definitive list of who can vote on finality right now. Each entry is a public key (ed25519) and a weight. Votes are weighted - higher weight means more influence in finalization. Updated at session changes via NewAuthorities event.

Use Cases

Get the current finality voter set
Calculate total voting weight
Verify if a specific validator is in the authority set
Build validator monitoring tools

From Chain Metadata

The current list of authorities.

Purpose & Usage

Purpose

The active set of validators who vote on block finality.

Common Query Patterns

Single value query returns Vec of (AuthorityId, Weight)

Stored Value

WeakBoundedVec

value (WeakBoundedVec)

Default Value

0x00 (raw SCALE bytes)

Absent keys read as this value — querying a key that has never been written returns this default, not an error or empty result.

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);

// Query Authorities storage (no keys - plain value)
const result = await api.query.Grandpa.Authorities.getValue();
console.log("Authorities:", result);

Runtime Info

Pallet: Grandpa
Storage Kind: Plain
First Version: v151
Current Version: v472

Back to Grandpa Storage