Swift Bitcoin – Full node library

Jun 17, 2025 • Announcements

Start of Testnet 4 Compatibility Effort

Testnet compatibility is a mandatory milestone for any piece of Bitcoin-related software aiming to eventually reach production stage.

It's also great timing that the old testnet 3 network is being decommissioned in favor of a more robust version 4.

As of the start of this week the primary objective of the Swift Bitcoin project will be to support Testnet 4. This includes connecting to nodes and sync'ing the blockchain, as well as compatibility with all preexisting functionality like wallet and PSBT.

The completion of this phase will likely justify the release of the first beta. We have set a deadline of 6 months to try to get there with as much quality as possible.

Stay tuned for more announcements regarding this effort, coming soon.