Overview#
When investigators execute a search warrant on a corporate network, they may return with tens of thousands of files spanning email archives, financial records, and device images. Processing each item individually is not a realistic option. The Evidence Bulk Operations module handles that volume through parallelised batch processing, letting forensic teams ingest, organise, and prepare large evidence collections without the weeks of manual work that would otherwise follow a major seizure.
Every bulk operation preserves forensic integrity and chain of custody compliance throughout. Deduplication happens automatically through cryptographic verification, so duplicate files never consume storage or analyst attention twice. Transactional processing ensures that if any part of a batch operation fails, the system rolls back cleanly rather than leaving evidence in a partial or ambiguous state.
Key Features#
- Parallelised batch upload with concurrent processing streams and chunked transfers, handling large forensic images and archive files without timeouts
- Automatic deduplication through cryptographic verification to prevent duplicate files from entering the evidence repository
- Batch metadata extraction eliminating manual data entry during ingestion of large seizures
- Mass tagging and metadata updates across collections of any size, with changes applied atomically
- Bulk access control modifications for permission management at the collection level
- Batch redaction application with parallel processing and tracked progress, suited to discovery response preparation
- Multi-format export generation for legal production at scale, supporting Bates numbering and package indexing
- Operation dependency management with intelligent resource allocation and failure recovery
- Real-time progress tracking with per-item status so investigators know exactly where a batch stands at any moment
- Transactional integrity ensuring all-or-nothing processing: either the entire batch succeeds, or nothing is committed
Use Cases#
- Ingesting thousands of evidence files from large-scale seizures with automatic deduplication, integrity verification, and cataloging in a single operation
- Applying mass metadata updates and classification tags across entire case collections to prepare for disclosure or court production
- Running bulk redaction operations on large discovery response sets with real-time progress tracking and per-item audit logs
- Generating multi-format export packages for legal production without processing each document individually
Integration#
The Evidence Bulk Operations module connects with evidence storage, chain of custody, and workflow management systems through a distributed processing architecture.
Open Standards#
- W3C Verifiable Credentials Data Model v2.0: Each evidence item admitted through a bulk operation receives a signed W3C VC that encodes its SHA-256 subject hash, issuer DID, and custody chain, providing cryptographically verifiable provenance.
- FIPS 180-4 (SHA-256): SHA-256 digests are computed over every ingested file and stored as the canonical integrity hash; the deduplication engine performs constant-time comparison of these digests to prevent duplicate items from entering the repository.
- RFC 8032 (Ed25519): Export packages and Verifiable Credentials are signed using Ed25519 keys, allowing downstream recipients to verify that a bulk export has not been altered since it left the platform.
- RFC 7519 (JSON Web Tokens): Verifiable Credentials are serialised and stored as compact JWTs (header.payload.signature), providing a standard transport envelope for the signed evidence provenance records.
- GraphQL (June 2018 Specification): All bulk operation entry points, batch upload, mass metadata update, bulk redaction, and multi-format export, are exposed as GraphQL mutations and queries, with progress state returned through the same typed schema.
- S3-Compatible Object Storage API: Bulk file transfers use presigned PUT URLs generated against the S3-compatible API (via botocore), enabling direct client-to-storage uploads without proxying file bytes through the application layer.
- IANA Media Types (MIME): Each file's MIME type is recorded at ingestion and used to route items to the correct processing pipeline (image, video, audio, document, or binary) during bulk classification and batch metadata extraction.
- ISO 8601: All chain-of-custody timestamps, audit log entries, and export manifests produced during bulk operations are serialised in ISO 8601 format, ensuring unambiguous temporal ordering across jurisdictions.
Last Reviewed: 2026-02-09 Last Updated: 2026-04-14