Events

Subscribe with ethereum.on(eventName, handler) and unsubscribe with ethereum.removeListener.

Emitted events

Event	Payload	When
accountsChanged	string[]	Approved accounts change, or access is revoked ([])
chainChanged	hex chainId string	Active network changes
networkChanged	decimal chain ID string	Same as chainChanged (MetaMask-compatible legacy)

listen.js

ethereum.on("accountsChanged", (accounts) => {
  if (accounts.length === 0) {
    // User disconnected this origin
  }
});

ethereum.on("chainChanged", (chainId) => {
  // Reload or update UI for the new chain
});

Bifrost suppresses duplicate events when the payload matches the last returned eth_accounts / eth_chainId / net_version value.

Provider API surface

The injected provider supports on and removeListener. It does not expose once or removeAllListeners.

References

• EIP-1193 events