SubnetIdentitySet

Event Re-added v195 → v212, v216 → v247, v252 → v265, v273 → v277, v290 → v315, v320 → v326, v334 → v367, v372 → v377, v385 → current #76

Emitted when a subnet 's identity metadata is set or updated.

View events on chain

Useful for: subnet ownersminersvalidatorsanalyticsdevelopers

The Big Picture

Subnets are just numbers (netuid) by default. Identity metadata lets you give your subnet a name, description, website, and other info that makes it discoverable and recognizable. Miners and validators can see what your subnet does before joining. Essential for attracting participants to your subnet.

Why This Matters

Nobody knows what 'subnet 47' does. But 'ImageGen - Decentralized Image Generation' immediately tells the story. Identity metadata makes your subnet findable and attractive to potential miners and validators.

Example Scenario

You launch a new text-to-SQL subnet. You call set_subnet_identity with name 'Text2SQL', description 'Convert natural language to SQL queries', and your GitHub link. SubnetIdentitySet fires. Now taostats and other explorers show your subnet's purpose.

Common Questions

Is identity required?: No, but strongly recommended. Subnets without identity are just numbers, making it hard for anyone to know what they do or decide to participate.
What can I include in the identity?: Name, description, website URL, and other metadata fields. Check the identity type definition for all available fields.

Use Cases

Brand your subnet with a recognizable name
Provide description and links for discoverability
Track when subnets update their branding
Build subnet directories with identity info

How to Use This Event

→ Monitor identity changes for subnet discovery
→ Build subnet browsers with name/description display
→ Track when subnets rebrand or update descriptions

From Chain Metadata

The identity of a subnet has been set

Triggers

Emitted by

set_subnet_identity

Preconditions

Caller is subnet owner
Valid identity data provided

Effects

Storage Modified

SubnetIdentitiesV3

Postconditions

SubnetIdentities storage updated

Side Effects

Subnet displays new name/description in UIs

Event Data

#	Name	Type	Description
0	arg0	u16	Event field #0 (u16)

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 });

// Subscribe to SubnetIdentitySet events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("SubtensorModule") &&
      event.method === "SubnetIdentitySet"
    )
    .forEach(({ event }) => {
      console.log("SubnetIdentitySet:", event.data.toHuman());
    });
});

Version History

Version:

v195 block 3,791,350 1 args

v216 block 4,510,996 1 args

v252 block 5,163,656 1 args

v273 block 5,659,032 1 args

v290 block 5,947,548 1 args

v320 block 6,523,566 1 args

v334 block 6,811,690 1 args

v372 block 7,430,358 1 args

v385 block 7,782,670 1 args Current

Runtime Info

View Source

Pallet Index: 7
Event Index: 76
First Version: v195
Current Version: v393

Back to SubtensorModule Events