ValidatorPruneLen

Storage Map v101 → current

Number of validators considered for pruning .

Queried by: validatorssubnet ownersdevelopers

The Big Picture

Not all validators face equal pruning risk. ValidatorPruneLen defines how many validators are in the 'danger zone' - the lowest performers who might be replaced. Smaller values mean only the very worst are at risk; larger values mean more competitive turnover.

Why This Matters

As a validator, am I at risk of pruning? If you're in the bottom ValidatorPruneLen, new registrations could replace you. Stay above this line.

Example Scenario

Query ValidatorPruneLen(netuid=1) returns 10. The bottom 10 validators by performance are at risk when new validators try to register.

Common Questions

How do I know if I'm in the prune zone?: Rank validators by performance. If you're in the bottom ValidatorPruneLen, you're at risk. Improve performance or increase stake to climb out.
Is this the same as miner pruning?: Similar concept but specific to validators. Validators have their own pruning dynamics separate from general neuron pruning.

Use Cases

Understand validator turnover dynamics
Assess your pruning risk as a validator
Research subnet validator economics
Design subnet competition parameters
Build validator risk dashboards

Purpose & Usage

Purpose

Control validator turnover - how many low-performers are at risk.

Common Query Patterns

Query by netuid
Understand pruning risk
Research validator competition

Query Keys

#	Name	Type	Description
1	key1	u16	key1 (u16)

Stored Value

u64

Value in RAO (÷10⁹ for TAO)

RAO -> TAO (/ 10^9)

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 ValidatorPruneLen storage
const key1 = 0;

const result = await api.query
  [stringCamelCase("SubtensorModule")]
  [stringCamelCase("ValidatorPruneLen")](
  key1
);

console.log("ValidatorPruneLen:", result.toHuman());

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Map
First Version: v101
Current Version: v393

Back to SubtensorModule Storage