Bitcoin PSBT Transaction Builder

Build an unsigned PSBT from your UTXOs, sign it in your wallet or hardware device, then broadcast.

Network

No private keys involved

This tool never asks for keys and never signs. The PSBT it builds is meant to be signed in an external wallet or hardware device (Sparrow, Specter, Coldcard, Keystone, etc.), then pasted back here if you want to broadcast.

1. Load UTXOs