The Level reflects what kind of security was used when issuing a document. Read across to see what each level guarantees. Signed + Secured: Blockchain + eIDAS signature Secured: Blockchain only Signed: Digital signature only Unsecured: Issuer database only No Origin - No Security: No proof found

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Is your document Authentic?

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80+ credential platforms supported

How verification works

We control documents against blockchain anchors, embedded digital signatures, issuer databases, and 80+ external credential platforms.
The security level returned reflects the proof we find.

You submit

A URL, a credential GUID, or a PDF/image. No account required, nothing stored beyond the verification result.

We check security layers

Blockchain proof, eIDAS digital signature, PKCS#7 cryptography, issuer database, and 80+ external credential platforms.

You get a verdict

You receive clearly explained security levels, from eIDAS & blockchain-secured to unverifiable, plus the underlying proof.

Security levels

The Level reflects what kind of security was used when issuing a document. Read across to see what each level guarantees.

Security level	Blockchain record	eIDAS signature	Issuer confirmation	Tamper-proof	Verify without issuer	Risk of fabrication
Signed + Secured Blockchain + eIDAS signature	✓	✓	✓	✓	✓	None

Secured Blockchain only	✓	—	✓	✓	✓	None

Signed Digital signature only	—	✓	✓	—	—	Low

Unsecured Issuer database only	—	—	✓	—	—	High

No Origin - No Security No proof found	—	—	—	—	—	Very high

What is eIDAS, and why does it matter?

eIDAS is the EU regulation (910/2014) that defines a common framework for digital signatures across all 27 member states. A document signed with a Qualified Electronic Signature carries a verified signer identity backed by an accredited trust service provider.

TRUE Verify reads the PKCS#7 / CAdES signature embedded in PDFs, extracts the signer's identity, the issuing certificate authority, and the precise signing time, backed by RFC 3161 timestamping.

If the document also has a blockchain hash on file, you reach Level I, the strongest combination of cryptographic proof a credential can carry. Either way, Level I or II means the document is tamper-proof and verifiable for the lifetime of the credential.

eIDAS verified document

Diploma in Computer Science

SignerKTH Royal Institute of Technology
Issuer CABuypass Class 3 CA 3
Signed2026-04-15 09:32 UTC
Policy OID0.4.0.194112.1.2 (QCP-n-qscd)
Blockchain✓ Polygon, block 78,491,233

More than a verification

TRUE Verify is free and open to everyone. It's one part of TRUE, the trust layer that keeps documents authentic from the moment they're issued to wherever they end up.

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Lets organisations issue and store documents that cannot be forged, lost or destroyed, such as certificates, attestations and diplomas.

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For any document

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