Overview#
Defence counsel challenging the admissibility of digital evidence will look for any gap in handling records. A single unexplained transfer or missing signature can undermine months of investigative work. The Compliance Chain of Custody module eliminates those gaps by providing forensic-grade evidence tracking with court admissibility support from the moment evidence is collected through final courtroom presentation.
The platform is built for law enforcement agencies, legal professionals, corporate investigation teams, and compliance departments. Every custody operation, whether a transfer, verification, or approval, is cryptographically signed and logged against one of 23 defined custody event types, creating an unbroken record that satisfies Daubert and FRE 702 evidentiary standards.
Key Features#
- Forensic documentation satisfying Daubert and FRE 702 evidentiary standards
- Rapid custody operations for transfer, verification, and approval workflows
- Cryptographic verification preventing gaps in evidence handling through multi-hash validation
- Tamper detection identifying any evidence modification attempts automatically
- 23 custody event types including evidence collection, intake processing, analytical examinations, and courtroom presentation
- 38 contextual attributes per custody event capturing custodian identity, facility location, handling procedures, and digital signatures
- Multi-authority custody transfer with authorisation tracking and environmental condition logging
- Court-admissible documentation supporting the strictest evidentiary standards in both common law and civil law jurisdictions
Use Cases#
- Criminal Prosecution: Law enforcement agencies maintain unbroken custody chains from evidence collection through trial presentation, giving prosecutors confidence that defence challenges will not succeed on procedural grounds
- Corporate Investigations: Internal investigation teams track digital evidence with cryptographic integrity verification throughout the investigation lifecycle, satisfying board-level and regulatory expectations
- Regulatory Compliance: Compliance teams at financial institutions and critical infrastructure operators demonstrate evidence handling procedures through comprehensive audit trails that meet regulatory requirements
- Cross-Jurisdictional Operations: Multi-agency investigations maintain custody integrity across organisational boundaries with transfer authorisation tracking suitable for both domestic and international proceedings
Integration#
- Connects with digital evidence management systems and body-worn camera platforms
- Compatible with case management systems for synchronised evidence tracking
- Supports court filing systems for evidence presentation documentation
- Role-based access controls with multi-level authorisation for sensitive evidence handling
- Automated notifications for custody transfer approvals and deadline tracking
- Complete audit trail export for legal proceedings and regulatory review
Open Standards#
- Ed25519 (RFC 8037): Every custody event record is cryptographically signed using an Ed25519 private key, with the public key fingerprint stored in each entry's metadata to allow independent signature verification.
- FIPS 180-4 / FIPS 202 (SHA-2 and SHA-3 hash algorithms): Evidence integrity is validated using a multi-hash scheme covering SHA-256, SHA-512, SHA3-256, and BLAKE2b, with all four digests stored at intake and re-computed on each verification.
- RFC 3161 (Internet X.509 PKI Time-Stamp Protocol): Evidence export packages are anchored to a trusted timestamp authority (TSA), producing a cryptographically verifiable timestamp token that establishes the existence of the evidence record at a precise point in time.
- ISO/IEC 27037:2012 (Guidelines for identification, collection, acquisition, and preservation of digital evidence): Evidence handling procedures, Bates-numbered disclosure packs, and court-export compliance tags are explicitly mapped to this standard's requirements.
- US Federal Rules of Evidence 901 and 702 (FRE 901 / FRE 702): The platform's court-admissibility flag and documentation generation are designed to satisfy the authenticity requirements of FRE 901 and the expert-evidence criteria underpinning Daubert challenges under FRE 702.
- NIST FIPS 204 / ML-DSA-65 (CRYSTALS-Dilithium): An optional hybrid post-quantum signature mode signs evidence hashes using ECDSA-P256 combined with ML-DSA-65, providing forward-looking resistance against quantum-capable adversaries.
- OASIS STIX 2.1: Evidence records and associated custody metadata can be exported as STIX 2.1 bundles, enabling interoperability with cyber-threat intelligence platforms and law-enforcement sharing frameworks.
- GraphQL (June 2018 specification): All custody queries, mutations, and verification workflows are served through a typed GraphQL API, providing a consistent, introspectable interface for case management and court filing system integrations.
Last Reviewed: 2026-02-23 Last Updated: 2026-04-14