NetworkImmunityPeriodSet

Event Re-added v133 → v133, v134 → v135, v136 → v141, v142 → v148, v149 → v165, v195 → v219, v233 → v247, v252 → v265, v273 → v277, v290 → v315, v320 → v326, v334 → current #57

Emitted when network immunity period is changed.

View events on chain

Useful for: subnet ownersdevelopersanalyticsvalidators

The Big Picture

New subnets get an immunity period - time during which they can't be dissolved for poor performance. This gives subnet owners time to build their ecosystem without immediate pressure. Longer immunity means more breathing room; shorter immunity means faster quality enforcement.

Why This Matters

If you're creating a subnet, immunity period is your safety window. During this time, you can build your validator/miner base without fear of dissolution. After immunity ends, your subnet must perform or risk being replaced. Plan your launch timeline accordingly.

Example Scenario

Network immunity was 7 days. To give subnet creators more runway, it's increased to 30 days. NetworkImmunityPeriodSet fires. New subnets now have a full month to establish themselves before facing performance scrutiny. Less pressure on subnet owners during launch.

Common Questions

Does this affect existing subnets?: Only if they're still in their immunity period. Subnets past immunity are unaffected. New subnets get the new duration.
What happens after immunity ends?: The subnet is subject to normal governance - if it underperforms, it can be dissolved to make room for better subnets. Performance now matters.
Can immunity be extended for individual subnets?: The network-wide parameter sets the default. Individual extensions would require governance or admin intervention.

Use Cases

Track new subnet protection periods
Plan subnet launch timelines
Monitor network governance policies
Build subnet lifecycle planning tools

How to Use This Event

→ Track immunity period for subnet planning
→ Monitor governance changes affecting subnet launches
→ Build subnet timeline forecasting tools

From Chain Metadata

the network immunity period is set.

Triggers

Preconditions

Caller has admin/sudo privileges

May fail with

NetworkDoesNotExist SubNetworkDoesNotExist RootNetworkDoesNotExist NetworkExist HotKeyNotRegisteredInNetwork EmissionValuesDoesNotMatchNetworks DidNotPassConnectedNetworkRequirement NetworkTxRateLimitExceeded IncorrectNetworkVersionKey AllNetworksInImmunity CanNotSetRootNetworkWeights

Effects

Postconditions

NetworkImmunityPeriod updated

Side Effects

New subnets protected for this duration

Event Data

#	Name	Type	Description
0	arg0	u64	Event field #0 (u64)

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

Version History

Version:

v133 block 1,404,224 1 args

v134 block 1,455,498 1 args

v136 block 1,756,781 1 args

v142 block 2,543,779 1 args

v149 block 3,014,339 1 args

v195 block 3,791,350 1 args

v233 block 4,920,350 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 Current

Runtime Info

View Source

Pallet Index: 7
Event Index: 57
First Version: v133
Current Version: v393

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