AccountCodesMetadata

Storage Map v210 → current

Metadata about contract code (size, hash).

Explore chain

Queried by: developers

The Big Picture

Metadata allows checking code properties without loading potentially large bytecode.

Use Cases

Check code hash
Verify contract version
Efficient code existence checks

Purpose & Usage

Purpose

Stores metadata for contract code without retrieving full bytecode.

Common Query Patterns

Query by H160 address for code metadata

Query Keys

#	Name	Type	Description
1	key1	H160	key1 (H160)

Stored Value

CodeMetadata

value (CodeMetadata)

Relationships

Modified By

create create2

Related Events

Created CreatedFailed Log

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 AccountCodesMetadata storage
const key1 = 0 as any /* H160 */;

const result = await api.query
  [stringCamelCase("EVM")]
  [stringCamelCase("AccountCodesMetadata")](
  key1
);

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

Runtime Info

Pallet: EVM
Storage Kind: Map
First Version: v210
Current Version: v393

Back to EVM Storage