# What changed in @metamask/bitcoin-wallet-standard

> 11 changes in @metamask/bitcoin-wallet-standard 0.2 to 1 from its official release notes, upgrade guides and advisories: 2 breaking, 1 security, 6 new APIs and options. Each one cited. Sources checked 2026-10-20. HTML: https://unstale.sh/npm/@metamask/bitcoin-wallet-standard/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @metamask/bitcoin-wallet-standard 1

### Breaking changes

- The multichain API client is now a peer dependency, which affects how developers declare and install it. (1.3.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.3.0)
- Removes the metamask_accountsChanged listener. (1.0.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.0.0)

### Security

- Addresses audit findings for correctness and security. (1.1.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.1.0)

### New APIs and options

- Features are now exported for developers to use. (1.2.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.2.0)
- Adds support for the testnet4 network. (1.1.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.1.0)
- Adds compatibility with the Sats Connect API. (1.0.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.0.0)
- Adds a listener for account selection changes and for automatically connecting or disconnecting the provider when session changes are initiated outside the provider. (1.0.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v1.0.0)

## @metamask/bitcoin-wallet-standard 0.3

### Fixes and other changes

- Notification handlers are now correctly unregistered. (0.3.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v0.3.0)
- The correct notification property is now used for the session. (0.3.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v0.3.0)

## @metamask/bitcoin-wallet-standard 0.2

### New APIs and options

- Adds account changed events for integrations to respond to account changes. (0.2.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v0.2.0)
- Adds disconnect events for integrations to respond to wallet disconnections. (0.2.0) — [release notes](https://github.com/MetaMask/bitcoin-wallet-standard/releases/tag/v0.2.0)