UsedSpaceOf

Storage Map v257 → current

Tracks commitment space usage for rate limiting.

Explore chain

Queried by: validatorsminersdevelopers

The Big Picture

To prevent commitment spam, each account has a space limit per interval tracked here.

Use Cases

Check available commitment space before submission
Debug space limit errors

From Chain Metadata

Maps (netuid, who) -> usage (how many “bytes” they've committed) in the RateLimit window

Purpose & Usage

Purpose

Prevent spam by limiting how much commitment data each account can store per interval.

Common Query Patterns

Query to check remaining space before submitting

Part of: On-Chain Commitments

Query Keys

#	Name	Type	Description
1	key1	u16	key1 (u16)
2	key2	AccountId	key2 (AccountId) (hex -> SS58)

Stored Value

UsageTracker

value (UsageTracker)

Relationships

Modified By

set_commitment

Related Events

Commitment TimelockCommitment

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 UsedSpaceOf storage
const key1 = 0;
const key2 = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";

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

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

Runtime Info

View Source

Pallet: Commitments
Storage Kind: Map
First Version: v257
Current Version: v393

Back to Commitments Storage