PSP

PSP Bitcoin Transaction Tool

Secure Offline Signing Β· PSP.LLC

πŸ”’ Air-gapped signing
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πŸ“₯ Already have a signed file?

Send Bitcoin Securely

Build A Transaction Online β€” Sign It Offline β€” Broadcast Securely

Transaction progress

1
Build
2
Review
3
USB
4
Broadcast
1

Build Transaction

Fill in the form below
2

Review Transaction

Complete step 1 first
3

Save to USB Drive

Complete step 2 first
β„Ή File Mode β€” Click below to save the transaction file to your computer. Copy it to your USB drive, sign it on the offline machine, then return to Step 4.

Insert your USB drive, then click below

πŸ’‘ In the file picker: go to This PC β†’ select Drive D: (or whichever drive letter your USB shows as)

File:
βœ… File saved to USB!
  1. Safely eject your USB drive.
  2. Take the USB to your offline (air-gapped) computer.
  3. Open the pspwllt/index.html file from the USB.
  4. Enter your phrase and salt to load your wallet.
  5. Click the SIGN TRANSACTION button on the wallet page.
  6. Return here with the signed file to continue with Step 4.
4

Verify & Broadcast

Complete step 3 first
ℹ️ Direct access mode. Insert your USB drive containing the SIGNED-PSP-Trans-*.txt file, select the drive, load it, then broadcast.
A Load signed transaction

Browse to the signed transaction file (SIGNED-PSP-Trans-*.txt) from your USB drive.

B Verification complete
βœ… Signature verified β€” transaction is authentic
πŸ”’ SIGNED & READY TO BROADCAST
πŸ“‹ Transaction Summary
Technical Details
C Broadcast to network
Broadcast providers (auto-fallback): coinb.in β†’ Blockstream β†’ BlockCypher β†’ Blockchair
⚠️ This action cannot be reversed. Verify the details above carefully before broadcasting.