TransactionKeyLastBlock

Storage Map v195 → current

Last block for rate-limited transaction by key.

Queried by: developers

The Big Picture

Various transactions are rate-limited per key. This tracks the last block for each transaction type to enforce cooldowns.

Use Cases

Debug rate limits
Monitor transaction frequency

From Chain Metadata

================================= ==== Axon / Promo Endpoints ===== =================================

Purpose & Usage

Purpose

Track transaction timing for rate limiting.

Common Query Patterns

Query by (hotkey, netuid, name)

Query Keys

#	Name	Type	Description
1	key1	AccountId	key1 (AccountId) (hex -> SS58)
2	key2	u16	key2 (u16)
3	key3	u16	key3 (u16)

Stored Value

u64

Value in RAO (÷10⁹ for TAO)

RAO -> TAO (/ 10^9)

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 TransactionKeyLastBlock storage
const key1 = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";
const key2 = 0;
const key3 = 0;

const result = await api.query
  [stringCamelCase("SubtensorModule")]
  [stringCamelCase("TransactionKeyLastBlock")](
  key1,
  key2,
  key3
);

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

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Map
First Version: v195
Current Version: v393

Back to SubtensorModule Storage