sudo_set_total_issuance
Call v138 → current #33Sets the total TAO issuance (root only, dangerous).
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_total_issuance, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.TotalIssuance, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: subnet owners
The Big Picture
Directly modifies the recorded total supply. Extremely dangerous - only for critical corrections.
Use Cases
- Emergency corrections
- Migration operations
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | total_issuance | u64 | total_issuance (u64) |
Permissions
Origin
Root
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller is root account
Effects
Storage Modified
Postconditions
- TotalIssuance updated
Side Effects
- Directly affects token supply metrics
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 });
// Build sudo_set_total_issuance call
const total_issuance = 0;
const call = api.tx[stringCamelCase("AdminUtils")][stringCamelCase("sudo_set_total_issuance")](
total_issuance
);Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 33
- First Version
- v138
- Current Version
- v393