Unsigned Bitcoin PSBT builder

Build a BIP174 PSBT from explicit inputs and outputs without uploading wallet data or connecting to a Bitcoin node.

Unsigned construction only. This page cannot sign, combine, finalize, extract, broadcast, or verify ownership. Review every output and fee in a trusted wallet before signing.

Network Fee rate (sat/vB) Estimated virtual size (vbytes)

Inputs, one per line: txid:vout:value_sats:script_pubkey_hex Maximum 50 inputs. The scriptPubKey is optional, but only native SegWit or Taproot witness scripts are attached as witness UTXOs. Recipients, one per line: address:value_sats Maximum 20 outputs. Values below 546 sats are rejected. Change address I will independently verify the recipients, change, and fee before signing.

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Unsigned Bitcoin PSBT builder

Plan summary

Unsigned PSBT (base64)