Multi-party e-signature · anchored on-chain
Send a PDF for signature, collect legally binding electronic signatures, and get a permanent, independently verifiable proof of integrity — anchored on Polygon and Bitcoin.
Email-verified signers · Polygon + Bitcoin anchoring · Tamper-evident audit trail
Signature — Sofia Scribe
How it works
Upload your PDF, add the people who need to sign, choose parallel or sequential signing, and send.
Each signer confirms their email with a one-time code before signing — no account, no app to install.
The document is hashed and timestamped on-chain the moment you send it, and again once it's fully executed.
Everyone gets the signed PDF with a Certificate of Completion and a public, permanent proof link.
Why BAScribe
Polygon and Bitcoin (OpenTimestamps) anchors are verifiable forever — even if BAScribe disappears tomorrow.
Every view, email verification, consent, and signature is recorded with timestamp, IP, and device in an append-only log.
Anyone can confirm a document's integrity from its hash alone. The hash never reveals the document's contents.
Legally binding
BAScribe signatures are Simple Electronic Signatures (SES) under eIDAS, ESIGN/UETA, the UK Electronic Communications Act, and equivalents — valid for the vast majority of B2B agreements. Advanced and qualified signatures (AES/QES) via a QTSP partner are on the roadmap.
Public verification
Anyone can confirm a document's integrity from the executed PDF alone — independently, on a public blockchain.
Send your first document for signature in minutes — and give every party proof that lasts.