DepositSlashed

Event v154 → current #5

Emitted when a deposit is slashed (not returned) due to abuse.

Useful for: validatorsdevelopersanalytics

The Big Picture

Someone's deposit was confiscated because governance determined their safe-mode activation was frivolous or malicious. This is the enforcement mechanism that gives deposits teeth - without slashing risk, deposits would just be temporary locks.

Use Cases

Track governance enforcement actions
Build reputation systems based on safe-mode behavior
Monitor for abuse patterns

From Chain Metadata

An account had reserve slashed that was reserved.

Triggers

Emitted by

force_slash_deposit

Preconditions

Account has a deposit at the specified block
ForceDepositOrigin authorized slash

Effects

Storage Modified

Deposits

Postconditions

Deposit is forfeited (not returned to account)
Deposit entry removed from storage

Side Effects

Slashed funds typically go to treasury

Event Data

#	Name	Type	Description
0	account	AccountId	Account whose deposit was slashed (hex -> SS58)
1	amount	u64	Slashed deposit amount (RAO) (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 });

// Subscribe to DepositSlashed events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("SafeMode") &&
      event.method === "DepositSlashed"
    )
    .forEach(({ event }) => {
      console.log("DepositSlashed:", event.data.toHuman());
    });
});

Runtime Info

Pallet Index: 20
Event Index: 5
First Version: v154
Current Version: v393

Back to SafeMode Events