Bit-Sign
Document Signing on Bitcoin
Sign documents with blockchain-verified proof. Every signature is permanently recorded on-chain — immutable, instant, and verifiable by anyone.
OR CONNECT A WALLET
Connect HandCashNo browser extension announced itself. A desktop wallet cannot be seen from this page at all — if Metanet Desktop is running, press it and it will connect.
OR
𝕏Continue with XContinue with GitHubContinue with GoogleContinue with LinkedInNo wallet. You can add one later.
Sign documents with a key only you hold.
Confirmation Speed0.2 seconds
Signature StandardBSV Ordinal
Cost per Signature$0.01
Document Signing
Upload any document and sign it with blockchain-verified proof. Every signature is permanent and tamper-proof.
Multi-Party Signing
Send documents to multiple signers with ordered workflows. Track progress and get notified when complete.
Instant Verification
Anyone can verify a signed document with a link. On-chain proof confirms who signed, when, and that nothing changed.