Enhanced Signer Identification | Proof
Enhanced Signer Identification provides businesses with cryptographically secured, auditable evidence of a signer's verified identity—including verification history, location, and IP address—fused to documents via secure digital signatures, ensuring authenticity and trust beyond just a visible signature image.
It’s not enough to put an image of a signature onto a page. Businesses need to know who actually signed and if this was really their signature.
All transactions need to be backed by auditable identification and cryptographic evidence. Enhanced Signer Identification is available across the entire platform for every transaction including notarizations.
This additional evidence provides an audit log about the identity, not just the transaction. It will include evidence of the signer’s identity verification history, their location, IP address and other meaningful data associated with this person.
As the platform matures, this evidence will get stronger. We’re constantly evaluating additional data sources that would be critical as additional evidence. Things like device fingerprint, public records check, etc. are all things that are coming soon to Enhanced Signer Identification.
That auditable identification is then fused to the document via heavily guarded cryptographic keys. This creates a cryptographic digital signature on every document which can’t be forged or tampered with. Now you know who signed the document not just by looking at what’s printed on the face of the document, but by looking at the unique set of bytes. Your identity could be cryptographically bound to any medium in the future: a web form, user generated content, or even just a transmission of data. The same application of PKI (public key infrastructure) is how computers trust each other on the internet. We’re taking that same concept to make it possible for humans to trust each other online.
Related
Individual Digital Certificate Supplement
The Individual Digital Certificate Supplement, incorporated into the Proof General Terms, outlines that Proof may issue an Individual Digital Certificate to a User upon verifying their application, requires the Individual to protect their Private Key and associated credentials, mandates accurate information provision, and obligates the Individual to request certificate revocation if their information changes, all subject to specified terms, conditions, and validity periods.
Benefits of eSignature Technology for the Finance Industry
The article explains that eSignature technology, legally recognized under U.S. laws like UETA and the E-Sign Act, offers financial institutions significant benefits including faster transaction times, reduced costs, enhanced security through encryption and identity verification, and specialized workflow integrations, making it essential for compliance, operational efficiency, and fraud prevention in the finance industry.
Proof General Terms
The Proof General Terms, last updated June 19, 2026, govern all Users accessing the Platform—including Subscribers, End Users, Participants, Notary Users, and Verification Portal Users—requiring acceptance via agreement and mandating individual arbitration instead of jury trials or class actions, with detailed definitions and remedies outlined in the document.
What the U.S. Can Learn from Sweden’s BankID
Sweden's BankID, a collaborative digital identity system created by banks in 2003, has become a widely adopted national standard used by over 8.6 million people to securely verify identity across banking, government, healthcare, and commerce, streamlining online trust and transactions in contrast to the fragmented and inconsistent identity verification methods commonly used in the U.S.
Proof: Our Brand Story
The Proof brand story highlights the launch of a unified platform that secures digital transactions through audited identity verification, fraud prevention, and digital signatures, inspired by the concept of DNA sequencing to emphasize unique individual identity and trust in an increasingly digital world.
Supplemental Terms
The Supplemental Terms document, last modified on June 19, 2026, outlines additional user-, service-, and use case-specific terms applicable to various categories such as Business entities, Notary Users, Subscribers, and specific services like In-House Notary and Real Estate, while also defining incident priority levels ranging from critical to minimal business impact based on the severity of service functionality disruption.