Litigation Support " Expert Witness

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International Tribunals

When millions are at stake in tokenised assets or cross-border disputes, a PDF report is not enough. The PTVS QFER (Qualified Forensic Evidence Record) standard provides the cryptographic custody chain and judicial admissibility required by ICC, AAA and EU courts.

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The Vulnerability of Traditional Test

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Document handling

The expert reports in PDF or paper are inherently vulnerable to post-emission alterations, without the possibility of verifying whether the document presented in court is identical to the original.

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Cross-Border Barrier

An expert conducted under the local law of a country is often rejected or requires costly legalization and affidavit translation processes to be admitted to international arbitration.

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Breakdown of the Custody Chain

The lack of an immutable record of who accessed, modified or signed the report generates reasonable doubt about the integrity of the evidence presented.

The Solution: The QFER Standard

The Qualified Forensic Evidence Record (QFER) It’s not a simple report. It is a digital probative asset designed to survive the scrutiny of standards Daubert y Fryeand the ITC and AAA evidence rules.

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Signature eIDAS 2.0 QES

Each report is signed digitally by a Colegiate Judiciary Perito using a Qualified Electronic Firm (QES), granting presumption of integrity and authorship to any EU court and countries with mutual recognition treaties.

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Inmutable Criptographic Anchor

The hash SHA-256 of the report, together with a time stamp RFC 3161, is anchored in the LO-PR Immutable Registry. Any alteration, at least, immediately invalidates the signature and is detectable in milliseconds.

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Apostille of The Hague and Neutrality

Backed by the PropTrust Association (Zug), the process meets the requirements of the Hague Apostille Convention, facilitating its admission to more than 125 countries without additional bureaucracy.

From Pericia to the Arbitral Award

In a high-value dispute, the counterpart will attempt to challenge the methodology, identity of the expert or the integrity of the document. The PTVS standard eliminates these attack vectors.

When presenting a QFER, the legal team not only delivers a technical finding; delivers a self-sufficient evidentiary package which includes the cryptographic verification of the expert’s identity, the inalterability of the content and the complete traceability of the process.

✅ Automatic Accessibility: It meets the requirements of electronic evidence of UNCITRAL and the EU.
✅ Defense against Impugnations: The cryptography shows mathematically that the document has not been altered since its signature.
✅ Support to the Expert Witness: Our experts are trained to defend their QFER findings in arbitration depositions and hearings.

      // QFER Cryptographic Verification

      function verifyEvidenceIntegrity()
bytes32 documentHash,
address expertWallet,
bytes calldata qesSignature

      ) external view returns (Bool{

        // 1. Verify QES Signature against Expert Identity

        Request(eIDAS.verify(expertWallet, qesSignature), “Invalid Expert Signature”);

        // 2. Verify Hash against LO-PR Immutable Registry

        Request(LOPRRegistry.isAnchored(documentHash), “Hash not anchored”);

        broadcast EvidenceVerified(msg.sender, block.timestamp);

        return true;

      }

The PTVS Test Weight

125+

Countries with Apostilla and EIDA

100%

Verifiable cryptographic custody chain

Cases of successful alteration of an anchored QFER

Do not leave the defense of your assets at random from documentary interpretation. It elevates its evidence to the highest mathematical and legal standard in the world.

Do you face a Litigation or Complex Arbitration?

Close Probatory for your
Legal Strategy

Our Litigation Support team works side by side with your law firm to generate, verify and defend QFER expert evidence before any arbitral tribunal or panel.

CONTACT LITIGATION SUPPORT DESK

Veritas in re · Certitudo in code · Honor in aeternum

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