BasketClaimRowDustBps

Storage Plain v468 → current New in v468

Relative part of the row-dust floor, in basis points of the fund anchored NAV.

Queried by: validatorsdevelopersanalytics

The Big Picture

The relative half of the row floor. Without it a small validator fund, where every row might be worth under the absolute cap, would have all of its rows treated as dust.

Why This Matters

A fund is judged against its own size, not against a flat TAO figure.

Example Scenario

A fund with 50 TAO anchored NAV at 10 basis points has a row floor of 0.05 TAO, well under the 1 TAO cap.

Use Cases

Compute the row floor for a given fund
Track governance changes to claim dust policy

From Chain Metadata

ITEM --> relative part of the row-dust floor, in basis points of the fund's anchored NAV (see [`BasketClaimRowDustCapTao`]). Keeps the floor proportionate for small funds. `0` disables the row skip. Set via `AdminUtils::sudo_set_basket_claim_dust`.

Purpose & Usage

Purpose

Keeps the row floor proportionate to fund size so small funds still redeem their rows.

Common Query Patterns

Query with BasketClaimRowDustCapTao to compute the row floor
Zero disables the row rule

Notes

First appears at runtime v468. Default 10 basis points, so 0.1% (lib.rs DEFAULT_BASKET_CLAIM_ROW_DUST_BPS at v468).
Basis points, so 10000 is 100%. sudo_set_basket_claim_dust rejects a value above 10000.
The row floor is min(BasketClaimRowDustCapTao, this × anchored NAV / 10000).
Set together with the other three knobs by sudo_set_basket_claim_dust.

Stored Value

u16

value (u16)

Default Value

10 0x0a00

Absent keys read as this value — querying a key that has never been written returns this default, not an error or empty result.

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 BasketClaimRowDustBps storage (no keys - plain value)
const result = await api.query.SubtensorModule.BasketClaimRowDustBps.getValue();
console.log("BasketClaimRowDustBps:", result);

Runtime Info

View Source

Pallet: SubtensorModule
Storage Kind: Plain
First Version: v468
Current Version: v472

Back to SubtensorModule Storage