LastTxBlockChildKeyTake

Storage Map v195 → current

Block of last childkey take change for an account.

Queried by: validatorsdevelopers

The Big Picture

Childkey take changes are rate-limited to prevent gaming. This tracks when take was last changed, enabling cooldown enforcement.

Use Cases

Check childkey take cooldowns
Plan take adjustments
Debug rate limit errors

From Chain Metadata

MAP ( key ) --> last_tx_block_childkey_take

Purpose & Usage

Purpose

Track childkey take modifications for rate limiting.

Common Query Patterns

Query by account address

Query Keys

#	Name	Type	Description
1	key	[u8; 32] [32]	key ([u8; 32], hashed key component)

Stored Value

u64

last_tx_block_childkey_take (u64)

RAO -> TAO (/ 10^9)

Relationships

Modified By

set_childkey_take

Related Events

ChildKeyTakeSet

Code Examples

import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443

const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);

// Query LastTxBlockChildKeyTake storage
const key = "0x0000000000000000000000000000000000000000000000000000000000000000";

const result = await api.query.SubtensorModule.LastTxBlockChildKeyTake.getValue(key);
console.log("LastTxBlockChildKeyTake:", result);

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Map
First Version: v195
Current Version: v411

Back to SubtensorModule Storage