This is Signer Identity Verification, available as an add-on to any signature when you need proof of exactly who signed, not something included in every unlimited signature by default.

Chekbox uses a patented process that combines cryptographic hashing with the immutability of the blockchain to provide Tamper-Proof Validation down to the pixel level.

The process is simple and is performed automatically whenever you need to rely on a document:

1. The Digital Fingerprint is Created (Lock)
   • The moment a document is uploaded or signed, the system instantly generates a unique cryptographic hash (Digital Fingerprint) that is mathematically tied to every single character and pixel in that file.
   • This Hash ID is then securely registered on the blockchain, creating an unalterable, time-stamped record of the file's original, authentic state.
2. The Document is Validated (Key)
   • To verify a document, you select the "Validate" function in Chekbox.
   • The system instantly calculates a new hash for the document's current state.
   • It then compares this new hash against the original Hash ID stored on the blockchain.
3. The Integrity Proof
   • If the hashes match: The document is 100% authentic, and you receive an Audit Certificate confirming its integrity.
   • If the hashes do not match: This means the document has been altered—even if by a single pixel or character—and the system flags it immediately as compromised, eliminating the risk of accidental or fraudulent use.

This process provides your firm with proof of document authenticity, eliminating the risk of fraud and liability.

This is a critical function known as Signer Identity Verification. Our eIDAS-compliant process uses a multi-layered approach to provide the strongest possible identity assurance, significantly reducing your fraud risk and increasing the legal defensibility of the signature.

Our Layered Identity Verification Process

1. Identity Matching: The signing process is intrinsically linked to the initial Client Identity Verification step. The signer must first prove their identity using verified documents (like passports or driver's licenses) against AML/CTF standards.
2. 2 Factor Authentication (2FA): Access to the signing session is secured with a second factor (such as a unique code sent to the signer's verified mobile phone or email) to ensure possession of the verified credentials.
3. Digital Certificate Creation: Once authenticated, a unique digital certificate is issued to the signer for that specific document. This certificate cryptographically binds their verified identity to the electronic signature data, proving they were the one who signed the document.
4. Audit Trail Evidence: Every step—from the initial verification to the final signature click—is logged in a permanent, time-stamped Audit Trail, recording the signer's IP address, the time of action, and the method of authentication.

This combination of AML-standard identity proofing and eIDAS-compliant cryptographic linking ensures that the electronic signature has the highest legal weight and confidence regarding the signer's true identity.

Documents signed using our eIDAS-compliant process are highly secure. You have the option to register the executed document's digital fingerprint onto the blockchain. This creates an immutable, unalterable record of the signed agreement, ensuring permanent proof of execution and eliminating future disputes about the document's content.

Yes. Our Tamper-Proof Validation feature detects even the smallest change—down to a single pixel—by comparing the document's current hash against the hash recorded on the immutable blockchain ledger. If the hashes don't match, the document is flagged as compromised.

Our electronic signatures are built for legal recognition in Australia. For matters that need it, identity verification can be added to a signature too, so it's tied to a confirmed person, not just an email address.