sudo_set_total_issuance
Call v138 → v298, v301 → v385, v391 → 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
From Chain Metadata
The extrinsic sets the total issuance for the network. It is only callable by the root account. The extrinsic will call the Subtensor pallet to set the issuance for the network.
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | total_issuance | u64 TaoBalance | total_issuance: TAO amount in RAO (÷10⁹ for TAO) |
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 { 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);
// Build sudo_set_total_issuance call (typed, named args)
const total_issuance = 0n;
const tx = api.tx.AdminUtils.sudo_set_total_issuance({
total_issuance,
});Version History
v138 block 1,907,363 1 args
v301 block 6,205,194 1 args
v391 block 7,782,857 1 args Current
Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 33
- First Version
- v138
- Current Version
- v411