Blockchain Investigation Explained
3 min read · Last updated
Blockchain investigation is the disciplined reading of public ledger data to answer a specific question: where did value go, and which real-world services touched it.
This article sets out the method, the evidentiary standards involved, and where the technique reaches its limits.
- 1Raw ledger data
- 2Transaction graph
- 3Address clustering
- 4Service attribution
- 5Evidence narrative
The data an investigator works with
Every public transaction exposes inputs, outputs, amounts, fees and block timestamps. Smart-contract networks add internal calls, token transfers and contract interactions.
This data is complete and verifiable by any third party, which is what makes it strong evidence when documented correctly.
From transactions to a graph
Individual transfers are assembled into a directed graph. Nodes are addresses; edges are transfers weighted by value and time. Patterns become visible at this level that are invisible transaction by transaction.
- ›Peeling chains, where value is split repeatedly to obscure a trail
- ›Consolidation wallets aggregating many victim deposits
- ›Automated dispersal to fresh addresses within minutes
Clustering and attribution
Clustering groups addresses likely controlled by one entity using heuristics such as common input ownership and change-address behaviour. Attribution then links a cluster to a known service through deposit patterns, published address sets and documented interactions.
Heuristics are probabilistic
Every heuristic has failure modes. A defensible report distinguishes a mathematical fact on the ledger from an inference about control.
Producing evidence rather than screenshots
A finding is only useful if a third party can verify it. Reports therefore cite transaction hashes, block heights, retrieval timestamps and the methodology used for each conclusion.
Limits of the technique
On-chain data cannot establish intent, contractual context or identity by itself. It establishes movement. Combining it with open-source intelligence and documentary evidence is what turns movement into a case.
Case intake is confidential and handled by email at cybersec@securida.info.
Frequently asked questions
- Is blockchain analysis admissible as evidence?
- On-chain data is independently verifiable, which supports its evidentiary value. Admissibility depends on jurisdiction and how the analysis is documented and presented.
- Do privacy coins make investigation impossible?
- They make on-chain tracing substantially harder. Investigations then rely more heavily on the boundaries where value enters or leaves regulated services.
- Cyber Intelligence
- 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.
About the research teamRelated briefings
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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.
cybersec@securida.info