Review a Bitcoin PSBT without turning a hardware wallet into a blind signer

Review a Bitcoin PSBT without turning a hardware wallet into a blind signer

A partially signed Bitcoin transaction can move between software and signing devices, but portability does not make its contents trustworthy. The signer still needs to identify the intended recipient, change destination and fee before authorization.

BIP 174 specifies a format for exchanging partially signed Bitcoin transactions and the data different participants may add. It is a technical standard, not a guarantee that a wallet interface presents every risk clearly.

Define the payment before constructing the PSBT

Write the recipient address, amount, intended fee policy and expected change behavior from independent records. Generate the receiving instruction immediately before the payment.

Do not let coordinator software become the only copy of the intended destination. The specification supports treating the PSBT as structured transaction data whose inputs, outputs, scripts and signatures can be inspected across separate roles.

Check which coins are selected and whether combining them links histories that were previously separate. Confirm each input belongs to the expected wallet and network. Avoid sharing a PSBT publicly because it can reveal transaction metadata before broadcast.

Inventory inputs and privacy exposure

Check which coins are selected and whether combining them links histories that were previously separate. Confirm each input belongs to the expected wallet and network.

Avoid sharing a PSBT publicly because it can reveal transaction metadata before broadcast. It cannot authenticate a SignalBet address, detect every compromised coordinator, choose a safe fee, confirm device firmware or undo a fully broadcast transaction.

Compare the complete recipient address and amount on the device rather than only in desktop software. Identify the change output and its derivation back to the wallet. Treat an unknown extra output as a failed review.

Verify every output on trusted hardware

Compare the complete recipient address and amount on the device rather than only in desktop software. Identify the change output and its derivation back to the wallet.

Treat an unknown extra output as a failed review. Generate the payment destination in the authenticated account, construct the PSBT in known software, verify recipient and change outputs on the signing device and export only after the review matches.

Compare input total, output total and fee, then review the fee rate against current conditions. A high absolute fee may be hidden when only the rate is shown. Do not sign merely because the interface says recommended.

Check the fee in absolute and rate terms

Compare input total, output total and fee, then review the fee rate against current conditions. A high absolute fee may be hidden when only the rate is shown.

Do not sign merely because the interface says recommended. Do not use complex signing as a reason to move more gambling funds. Test the wallet process away from essential money and stop when any displayed output is unclear.

Store the unsigned intent, reviewed PSBT fingerprint and final transaction ID without storing seed words beside them. Remove temporary files from shared systems after broadcast. Use the transaction record for support instead of exporting wallet secrets.

Preserve a clean signing record

Store the unsigned intent, reviewed PSBT fingerprint and final transaction ID without storing seed words beside them. Remove temporary files from shared systems after broadcast.

Use the transaction record for support instead of exporting wallet secrets. BIP 174 specifies a format for exchanging partially signed Bitcoin transactions and the data different participants may add. It is a technical standard, not a guarantee that a wallet interface presents every risk clearly.

Write the recipient address, amount, intended fee policy and expected change behavior from independent records. Generate the receiving instruction immediately before the payment. Do not let coordinator software become the only copy of the intended destination.

What the official source supports

Bitcoin BIP 174 partially signed transaction specification: The specification supports treating the PSBT as structured transaction data whose inputs, outputs, scripts and signatures can be inspected across separate roles.

Where the source stops

It cannot authenticate a SignalBet address, detect every compromised coordinator, choose a safe fee, confirm device firmware or undo a fully broadcast transaction.

Make the documented decision

Generate the payment destination in the authenticated account, construct the PSBT in known software, verify recipient and change outputs on the signing device and export only after the review matches.

Do not use complex signing as a reason to move more gambling funds. Test the wallet process away from essential money and stop when any displayed output is unclear.

Build the final verification sheet

A partially signed Bitcoin transaction can move between software and signing devices, but portability does not make its contents trustworthy. The signer still needs to identify the intended recipient, change destination and fee before authorization. Generate the payment destination in the authenticated account, construct the PSBT in known software, verify recipient and change outputs on the signing device and export only after the review matches. Do not use complex signing as a reason to move more gambling funds. Test the wallet process away from essential money and stop when any displayed output is unclear.

Do not let coordinator software become the only copy of the intended destination. Avoid sharing a PSBT publicly because it can reveal transaction metadata before broadcast. Treat an unknown extra output as a failed review. Do not sign merely because the interface says recommended. Use the transaction record for support instead of exporting wallet secrets.

Run a final evidence review before acting

BIP 174 specifies a format for exchanging partially signed Bitcoin transactions and the data different participants may add. It is a technical standard, not a guarantee that a wallet interface presents every risk clearly. Review these checkpoints in order: Define the payment before constructing the PSBT; Inventory inputs and privacy exposure; Verify every output on trusted hardware; Check the fee in absolute and rate terms; Preserve a clean signing record. Leave an unanswered item visibly unresolved instead of replacing it with a guess. It cannot authenticate a SignalBet address, detect every compromised coordinator, choose a safe fee, confirm device firmware or undo a fully broadcast transaction.

Define the payment before constructing the PSBT requires this evidence step: Write the recipient address, amount, intended fee policy and expected change behavior from independent records. Do not let coordinator software become the only copy of the intended destination. Inventory inputs and privacy exposure requires this evidence step: Check which coins are selected and whether combining them links histories that were previously separate. Avoid sharing a PSBT publicly because it can reveal transaction metadata before broadcast. Verify every output on trusted hardware requires this evidence step: Compare the complete recipient address and amount on the device rather than only in desktop software. Treat an unknown extra output as a failed review. Check the fee in absolute and rate terms requires this evidence step: Compare input total, output total and fee, then review the fee rate against current conditions. Do not sign merely because the interface says recommended. Preserve a clean signing record requires this evidence step: Store the unsigned intent, reviewed PSBT fingerprint and final transaction ID without storing seed words beside them. Use the transaction record for support instead of exporting wallet secrets.

For more context on Bitcoin wallet safety, compare the named source with the responsible-play centre, the guide library and our editorial policy. SignalBet Guide referral links are disclosed, and compensation does not control sourcing, corrections or safety conclusions.