AssociatedEvmAddress

Storage Map v261 → current

EVM address associated with a neuron position.

Queried by: developerswallets

The Big Picture

Bridges the gap between Substrate accounts and EVM addresses. Neurons can prove ownership of an EVM address, enabling cross-chain features and EVM-based access to Bittensor functionality.

Use Cases

Find EVM address for a neuron
Build cross-chain identity tools
Link EVM and Substrate accounts

From Chain Metadata

============================= ==== EVM related storage ==== ============================= DMAP (netuid, uid) --> (H160, last_block_where_ownership_was_proven)

Purpose & Usage

Purpose

Link Substrate neuron UIDs to EVM addresses for cross-chain identity.

Common Query Patterns

Query by (netuid, uid)

Query Keys

#	Name	Type	Description
1	key1	u16	key1 (u16)
2	key2	u16	key2 (u16)

Stored Value

(H160, u64)

Value in RAO (÷10⁹ for TAO)

Relationships

Modified By

associate_evm_key

Related Events

EvmKeyAssociated

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 AssociatedEvmAddress storage
const key1 = 0;
const key2 = 0;

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

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

On-Chain Activity

Write Frequency

●●○○○○ Minimal <10K est. writes

<10K estimated writes

#59 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: v261
Current Version: v393

Back to SubtensorModule Storage