Delete the data.
Keep the proof.

Nexum keeps a one-way fingerprint of each record, never the record itself, and a verifiable log of every retention decision. When retention ends, the data goes. The proof that you handled it lawfully stays.

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The contradiction

The SRA requires records that cannot be altered.
UK GDPR requires permanent erasure on request.

SRA Accounts Rules · 7-year retention
Every record immutable. Every hash verifies.
vs
UK GDPR Article 17 · erasure on request
GDPR demands this record vanish. Conventional systems lose the audit trail.

Every regulated firm lives with this structural conflict. Accounts Rules mandate audit trails that can withstand seven years of scrutiny. Article 17 of UK GDPR mandates erasure on client request. Nexum addresses this by leaving the mandatory record untouched in your practice management system, while providing the cryptographic verification, decision-audit, and compliant lifecycle layers around it.

The approach

Seal. Audit. Comply.

01 · Seal

Every document and compliance event is hash-sealed into an append-only Merkle chain. Each record gets a unique cryptographic fingerprint that proves it existed in exactly this form at exactly this time.

02 · Audit

Every retention decision, access event, and lifecycle action is recorded with full actor context: who did it, when, and why. Tampering with any record breaks every downstream hash and is instantly detectable.

03 · Comply

When a record's retention period expires and the firm's COLP authorises destruction, Nexum destroys only its own encrypted metadata, such as the file name, and issues a key-destruction certificate. The document itself never came to Nexum and stays in your PMS throughout.

See the full sequence →
Integrations

Works with the tools your firm already uses.

C
Clio
connected
L
LEAP
soon
O
Osprey
soon

The record they can't dispute.
Built for regulated UK law firms.

Currently onboarding design partners from regulated law firms.