The Admissibility Litmus Test
for Cryptographically Anchored Forensic Evidence

⚖️ The Judicial Blind Spot

Courts worldwide routinely admit paper documents of dubious origin while rejecting blockchain-anchored forensic records as “opaque” or “technically inscrutable.” This inversion of evidentiary logic creates severe legal uncertainty for tokenized Real-World Assets (RWAs). The Judicial Evidence & Admissibility Standard (JEAS v1.0) resolves this by establishing a uniform procedural rule: a forensic record satisfying a defined cryptographic chain of custody is self-authenticating and enjoys a rebuttable presumption (iuris tantum) of integrity.

🧪 The Litmus Test (Annex II)

Use this table to instantly classify the evidentiary value of any digital forensic report presented in civil, commercial, or arbitral proceedings.

Evidentiary Criterion	Standard Document (No Presumption)	Qualified Forensic Evidence Record (QFER) (Presumption Iuris Tantum)
1. Format	Simple PDF, editable, metadata easily altered	PDF/A-3 (ISO 19005-3) with embedded original evidentiary files
2. Signature	None, or simple scanned image of a signature	Qualified Electronic Signature (QES) under eIDAS 2.0 (non-repudiation)
3. Time Certainty	Alterable system metadata	Qualified Timestamp (RFC 3161 / eIDAS Art. 42)
4. Post-Signature Integrity	Unverifiable; no cryptographic proof of non-tampering	Hash anchored on-chain (verifiable by any third party)
5. Expert Attributes	Unverified claim of expertise or certification	Qualified Electronic Attestation of Attributes (QEAA, eIDAS Art. 45d) confirming PTVS Score / PRRB Rating
6. Judicial Consequence	Requires full foundational proof and sponsoring testimony	Self-authenticating. Burden of rebuttal shifts entirely to the challenging party.

🏛️ The 8 Technical Pillars of a QFER (JEAS Art. 1)

For a record to qualify for the iuris tantum presumption, it must satisfy all eight of the following normative anchors: