Current Value
7200Relevant for: validatorsminersdevelopers
The Big Picture
Hotkey swaps are rate-limited to prevent abuse. This constant sets the cooldown between swaps on any given subnet. It prevents rapid key cycling that could be used to game identity systems or confuse tracking. Legitimate stakers rotations are still possible, just not rapid-fire changes.
Why This Matters
Plan key rotations around this cooldown. If you swap today, you can't swap again until the interval passes. Emergency rotations are still possible on other subnets.
Example
With HotkeySwapOnSubnetInterval of 7200 blocks (~24 hours), after swapping your hotkey on subnet 1 at noon, you can't swap on subnet 1 again until noon tomorrow. Subnets 2 and 3 have independent cooldowns.
Common Questions
- Does this affect coldkey swaps?
- No, coldkey and hotkey swaps have separate limits. This is specifically for hotkey rotation on individual subnets.
- What if I absolutely need to swap sooner?
- You must wait. The rate limit is enforced on-chain. Plan rotations to not overlap with potential emergency needs.
From Chain Metadata
Block number for a coldkey swap the hotkey in specific subnet.
Use Cases
- Hotkey swap
- Rate limiting
Value History
| Version | Block | Change | Value |
|---|---|---|---|
| v276 | #5,781,672 | Added | 36000 |
| v391 | #7,782,857 | Changed | 36000 → 7200 |
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 HotkeySwapOnSubnetInterval constant
const value = api.consts[stringCamelCase("SubtensorModule")][stringCamelCase("HotkeySwapOnSubnetInterval")];
console.log("HotkeySwapOnSubnetInterval:", value.toHuman());
// Convert RAO to TAO if this is a balance value
const taoValue = value.toBigInt() / BigInt(1e9);
console.log("TAO:", taoValue.toString());Type Information
- Type
- u64
- Byte Size
- 8 bytes
- Encoding
- fixed
- Raw Hex
- 0x201c000000000000
Version History
v276 block 5,781,672 Added
v391 block 7,782,857 Re-added Current
Runtime Info
- Pallet
- SubtensorModule
- First Version
- v276
- Latest Version
- v276
- Current Runtime
- v393