Court-admissible evidence.
Permanently provable.
Provlyn gives UK and EU law firms cryptographic proof of existence for client documents — protected by RFC 3161 trusted timestamping and the Bitcoin blockchain. Unlike traditional virtual data rooms, Provlyn proves a document existed and has not been altered, without needing to trust us.
Why traditional data rooms fall short
Virtual data rooms store documents behind passwords. Provlyn proves a document existed at a specific moment, independently of any server you have to trust.
Trust the provider
- ✗ Access logs live on the provider's servers
- ✗ Files can theoretically be altered server-side
- ✗ Tamper-detection is not cryptographic
- ✗ If the provider fails, evidence is lost
- ✗ No independent proof of existence
Trust the mathematics
- ✓ RFC 3161 timestamps issued by trusted TSA
- ✓ SHA-256 hash anchored to Bitcoin blockchain
- ✓ Verifiable without trusting Provlyn's servers
- ✓ eIDAS-compliant digital evidence (EU)
- ✓ Independent command-line verification (OpenSSL)
Built for real legal workflows
From contentious probate to IP litigation — proof that stands up.
Will preservation for probate
Store client wills with an immutable timestamp proving the version, date, and integrity of the document. When a will is contested, you have cryptographic proof of exactly which version was executed and when — defeating allegations of tampering, substitution, or backdating in probate proceedings.
Client IP preservation
Protect client intellectual property — designs, inventions, manuscripts, software, trade secrets — with timestamped evidence of authorship and priority date. Essential for IP litigation, trademark oppositions, and copyright enforcement where "first in time" is decisive.
eDiscovery & chain of custody
Create a tamper-evident record of evidence collection for litigation. Every document is hashed on deposit and anchored to the blockchain, giving you defensible chain-of-custody that meets disclosure obligations and withstands challenges to authenticity.
Privileged document sharing
Share sensitive materials with opposing counsel, experts, clients, or third parties through invite-only vaults with verified email access. Every view, download, and action is permanently logged — and the logs themselves are blockchain-anchored so they cannot later be disputed.
Contract evidence
Timestamp executed contracts, variations, and supplemental agreements at the moment of signing. Prove exactly when a document existed in a specific form — critical when disputes arise over amendment timing, version control, or alleged backdating.
Regulatory & compliance records
Create immutable audit trails for regulatory filings, compliance records, and internal governance documents. Demonstrate GDPR Article 5(2) accountability and maintain defensible records for SRA, FCA, or industry regulator investigations.
How the evidence is built and shared
Legally recognised worldwide
RFC 3161 timestamps and blockchain anchors are acknowledged as valid evidence across major jurisdictions.
Provlyn is not a law firm and does not provide legal advice. Admissibility of any specific evidence depends on the jurisdiction and the facts of the case.
Let's talk about your firm.
We work with firms on firm-wide licensing, white-label deployments, and per-matter pricing for litigation teams. Get in touch and we'll propose a structure that fits how your practice actually works.