A modern e-signature platform with a legal audit trail, cryptographic signature, and optional Bitcoin-anchored timestamp on every signed PDF. No vendor lock-in. Anyone can verify a ProofLeaf signature without an account.
Every signed document includes a full audit log — IP, timestamp, geolocation, and explicit consent — appended as the final page.
A PAdES-B PKCS#7 signature is embedded in every final PDF. Adobe Reader and any PDF verifier will confirm authenticity.
Anyone can re-hash a signed PDF on our /verify page — no account needed. Optional OpenTimestamps proof anchors to Bitcoin.