CBI — Certified Blockchain Investigator · Final Exam
Professional-tier blockchain forensics: address clustering, transaction tracing, cross-chain bridges, mixer/tumbler typologies, DeFi exploit patterns, NFT wash trading and attribution that survives prosecutorial review.
100 scenario-based multiple-choice questions · pass mark 80/100 (80%). Every question has exactly one best-supported answer; distractors are intentionally plausible. Retakes allowed — your highest score counts. Diploma auto-issued to your account name on pass.
Doctrine you are expected to apply
- UTXO vs account-based ledger reasoning; common-input-ownership and change heuristics.
- Cross-chain laundering: bridges, swaps, wrapped assets, peel chains.
- Mixer/tumbler typologies (CoinJoin, Tornado-style pools) and statistical de-mixing limits.
- Smart-contract exploitation, flash-loan attacks, MEV and rug-pull patterns.
- Attribution chain: on-chain trace → exchange touchpoint → KYC subpoena → identified entity.
Authority sources behind the exam
- Chainalysis Crypto Crime Reports & investigation playbooks.
- TRM Labs Illicit Finance reports.
- Elliptic typology reports.
- U.S. DOJ Cryptocurrency Enforcement Framework.
- FATF Updated Guidance on Virtual Assets and VASPs.
Before you begin
- Allow 60–90 minutes of uninterrupted, focused time.
- Read every stem carefully — the difficulty is in the discrimination between defensible options, not in trick wording.
- When two options look correct, pick the one most directly supported by the evidence/method described in the stem.
- CBI is a professional credential — answer as a working analyst would write into a report under their own name.