This event was removed in v377

This event is no longer emitted in the current runtime. Existed from v195 to v377. Shown here for historical reference.

ColdkeySwapScheduleDurationSet

Event Removed v195 → v212, v216 → v247, v252 → v265, v273 → v277, v290 → v315, v320 → v326, v334 → v367, v372 → v377 (removed) #77

Emitted when the coldkey swap schedule duration is changed.

Useful for: stakersvalidatorswalletsexchangesanalytics

The Big Picture

The coldkey swap schedule duration is a security parameter - how long you must wait between scheduling a coldkey swap and it executing. This arbitration period lets you (or others) detect and dispute unauthorized swaps. Longer durations mean more security (more time to notice problems) but slower legitimate migrations. Shorter durations mean faster migrations but less protection.

Why This Matters

If you're planning a coldkey migration, this tells you how long you'll wait. If someone maliciously schedules a swap, this is how long you have to notice and dispute. Changes to this duration affect both security and convenience for all users.

Example Scenario

Security is upgraded: ColdkeySwapScheduleDurationSet fires with 7 days instead of 3 days. Now when you schedule a coldkey swap, you wait a full week before execution. This gives more time to catch unauthorized swaps but makes legitimate migrations slower.

Common Questions

Does this affect my already-scheduled swap?: No, swaps already scheduled use the duration that was in effect when scheduled. Only new schedules use the updated duration.
What's a typical duration?: Usually a few days - long enough to notice problems, short enough for reasonable migrations. Check the current ColdkeySwapScheduleDuration constant.
Can the duration be zero for instant swaps?: Unlikely. Zero duration would defeat the security purpose. There's probably a minimum enforced by the runtime to ensure meaningful arbitration time.

Use Cases

Track how long coldkey migrations take
Plan key rotation timelines
Monitor security policy changes
Build migration planning tools

How to Use This Event

→ Monitor for changes affecting migration timelines
→ Track security policy evolution
→ Build migration planning tools with accurate timelines

From Chain Metadata

The duration of schedule coldkey swap has been set

Triggers

Emitted by

schedule_coldkey_swap

Preconditions

Caller has admin/sudo privileges

Effects

Postconditions

Duration for new swap schedules updated

Side Effects

Does not affect already scheduled swaps

Event Data

#	Name	Type	Description
0	arg0	u32	Event field #0 (u32)

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 });

// Subscribe to ColdkeySwapScheduleDurationSet events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("SubtensorModule") &&
      event.method === "ColdkeySwapScheduleDurationSet"
    )
    .forEach(({ event }) => {
      console.log("ColdkeySwapScheduleDurationSet:", event.data.toHuman());
    });
});

Version History

Version:

v195 block 3,791,350 1 args

v216 block 4,510,996 1 args

v252 block 5,163,656 1 args

v273 block 5,659,032 1 args

v290 block 5,947,548 1 args

v320 block 6,523,566 1 args

v334 block 6,811,690 1 args

v372 block 7,430,358 1 args

v377 Removed

Runtime Info

View Source

Pallet Index: 7
Event Index: 77
First Version: v195
Removed In: v377

Back to SubtensorModule Events