Pause Activity

Halt transfers, mints, or burns on your stablecoin independently during an incident, then resume when it’s resolved.

If something goes wrong, halt activity fast. B20 pausing is granular: stop transfers, mints, or burns independently. PAUSE_ROLE and UNPAUSE_ROLE are separate, so the ability to stop the token can be held more widely than the ability to resume it.

Demo

The demo uses a local browser-generated account to submit real transactions on Base Vibenet. If Vibenet or its B20 features are unavailable, it automatically switches to an illustrative offline version.

New to B20? See the B20 Token Standard for the concepts and a full launch walkthrough. These samples target base-std@v1.0.0, viem@2.55.11, and Base Foundry v1.1.1.

Pause and Resume Transfers

TypeScript

import { type Address } from "viem";
import { publicClient } from "../../shared/clients.js";
import { b20Abi } from "../abi.js";
import { sendContract } from "../write.js";

export async function setTransfersPaused(token: Address, paused: boolean) {
  await sendContract({
    address: token,
    abi: b20Abi,
    functionName: paused ? "pause" : "unpause",
    args: [[0]],
  });
  const current = await publicClient.readContract({ address: token, abi: b20Abi, functionName: "isPaused", args: [0] });
  if (current !== paused) throw new Error("Pause state did not change");
}

See the B20 token standard for the complete interface, roles, and policies.

isPaused(0) returns true after pausing and false after resuming.

Transfer is enum value 0. The function accepts an array; never pass a hash such as keccak256("TRANSFER").

See Also

Block an Account

Deny a specific address.

Pause (B20 Standard)

Pause controls in the B20 standard.