LastColdkeyHotkeyStakeBlock

Storage Map v238 → v411 Changed in v411

Block when stake was last added/removed for a coldkey -hotkey pair.

Queried by: developersstakers

The Big Picture

Staking operations may be rate-limited. This tracks the last block when stake changed for each coldkey-hotkey pair, enabling rate limit calculations.

Use Cases

Check staking cooldowns
Debug rate limit errors
Build staking timing tools

From Chain Metadata

Map (coldkey, hotkey) --> u64 the last block at which stake was added/removed.

Purpose & Usage

Purpose

Track staking activity timing for rate limiting.

Common Query Patterns

Query by (coldkey, hotkey)

Query Keys

#	Name	Type	Description
1	coldkey	AccountId	coldkey (AccountId, hashed key component) (hex -> SS58)
2	hotkey	AccountId	hotkey (AccountId, hashed key component) (hex -> SS58)

Stored Value

u64

u64 (u64)

RAO -> TAO (/ 10^9)

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 LastColdkeyHotkeyStakeBlock storage
const coldkey = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";
const hotkey = "5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY";

const result = await api.query.SubtensorModule.LastColdkeyHotkeyStakeBlock.getValue(coldkey, hotkey);
console.log("LastColdkeyHotkeyStakeBlock:", result);

Version History

Version:

v238 block 4,936,550 Added

v241–v243 · runtime versions skipped on chain (never deployed)

v244 block 4,999,897 Internal re-bind

v266–v272 · runtime versions skipped on chain (never deployed)

v273 block 5,659,032 Internal re-bind

v278–v289 · runtime versions skipped on chain (never deployed)

v290 block 5,947,548 Internal re-bind

v293–v296 · runtime versions skipped on chain (never deployed)

v297 block 6,067,943 Internal re-bind

v316–v319 · runtime versions skipped on chain (never deployed)

v320 block 6,523,566 Internal re-bind

v327–v333 · runtime versions skipped on chain (never deployed)

v334 block 6,811,690 Internal re-bind

v353–v360 · runtime versions skipped on chain (never deployed)

v361 block 7,063,679 Internal re-bind

v363–v364 · runtime versions skipped on chain (never deployed)

v365 block 7,135,419 Internal re-bind

v386–v390 · runtime versions skipped on chain (never deployed)

v391 block 7,782,857 Internal re-bind

v394–v400 · runtime versions skipped on chain (never deployed)

v401 block 8,036,576 Internal re-bind

v403–v410 · runtime versions skipped on chain (never deployed)

v411 block 8,283,784 Internal re-bind Current

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Map
First Version: v238
Current Version: v411

Back to SubtensorModule Storage