Blockchain Evidence: Collection and Preservation
3 min read · Last updated
Evidence is not the analysis; it is the underlying material and the record of how it was obtained.
This article covers what is collected, how integrity is maintained and how the register is structured.
- 1Identify
- 2Capture
- 3Hash
- 4Register
- 5Present
What is collected
On-chain extracts, archived web captures, correspondence, payment records and platform documentation together constitute the evidentiary base.
- ›Transaction records with block metadata
- ›Full-page captures with retrieval timestamps
- ›Communications in original format where possible
- ›Bank and card records for fiat legs
Integrity
Each artefact is hashed on capture and the hash recorded in the register. Any subsequent alteration is detectable.
Chain of custody
The register records who captured each artefact, when, from which source and by which method. Gaps in that record are what opposing parties attack.
Verifiability
Because ledger data is public, a third party can independently re-derive on-chain findings — a significant evidentiary advantage over most digital evidence.
Presentation
Evidence is presented in a numbered register cross-referenced from the narrative, so every assertion points to a specific artefact.
Case intake is confidential and handled by email at cybersec@securida.info.
Frequently asked questions
- Are screenshots sufficient evidence?
- Alone, no. Captures need timestamps, source URLs, integrity hashes and a documented capture method.
- How long should evidence be retained?
- For the duration of any proceedings and any applicable limitation period, under appropriate data-protection controls.
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- Blockchain Investigations
- Digital Forensics
The SEQRIA Research Team is the investigative research unit of SEQRIA, specialising in cyber intelligence, blockchain investigations and digital forensics.
Its work focuses on digital asset investigations, blockchain transaction analysis, cyber incident investigations and technical evidence collection. Published material is reviewed internally before release.
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SEQRIA provides technical investigation, forensic analysis and recovery assistance. Outcomes are never guaranteed. Case intake is confidential and handled by email.
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