IsNetworkMember

Storage Map v101 → current

Whether a hotkey is registered on a subnet .

Queried by: minersvalidatorsdeveloperswallets

The Big Picture

A simple yes/no answer: is this hotkey registered on this subnet? More direct than querying Uids and checking for a valid response. This is the canonical membership check.

Why This Matters

Before you can mine, validate, or receive emissions on a subnet, you must be registered. This tells you definitively whether a hotkey is a member of a subnet.

Example Scenario

Query IsNetworkMember(hotkey=your_hotkey, netuid=1) returns true - you're registered on subnet 1. Returns false? You need to register before participating.

Common Questions

How is this different from querying Uids?: IsNetworkMember gives a boolean answer directly. Uids gives the UID if registered, or a default if not. Use IsNetworkMember for simple yes/no checks.
Can I be a member of multiple subnets?: Yes, the same hotkey can register on multiple subnets. Check IsNetworkMember for each subnet you care about.

Use Cases

Check if registration succeeded
Validate membership before staking or setting weights
Build registration status dashboards
Gate access to subnet-specific features in applications

Purpose & Usage

Purpose

Quick membership check without UID lookup.

Common Query Patterns

Check registration status before operations
Validate neuron membership

Part of: Neuron Registration

Query Keys

#	Name	Type	Description
1	key1 → hotkey	AccountId	Hot wallet address (hex -> SS58)
2	key2 → netuid	u16	Subnet ID

Stored Value

bool

Whether hotkey is registered on subnet

Relationships

Modified By

burned_register register root_register swap_hotkey

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 });

// Query IsNetworkMember storage
const key1 = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";
const key2 = 0;

const result = await api.query
  [stringCamelCase("SubtensorModule")]
  [stringCamelCase("IsNetworkMember")](
  key1,
  key2
);

console.log("IsNetworkMember:", result.toHuman());

On-Chain Activity

Write Frequency

●●●●○○ Medium 100K–1M est. writes

100K–1M estimated writes

#28 most written storage item

Write Source User Extrinsics

Modified via user-submitted extrinsics

As of block 7,429,232

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Map
First Version: v101
Current Version: v393

Back to SubtensorModule Storage