What Is KYC?
KYC, know your customer, is the identity check regulated platforms must run before letting you trade: name, ID, sometimes a selfie and proof of address. It is why buying crypto on a U.S. exchange feels like opening a bank account. It is a legal obligation, not a company preference.
How It Actually Works
- Anti-money-laundering law treats exchanges as financial institutions: they must verify identities, monitor transactions, and report suspicious activity, the same framework banks live under, run by FinCEN in the U.S.; my regulator guide maps the agencies.
- Your verified identity links your trades and withdrawals. Exchange records tie wallet addresses to names, and tax reporting rides the same rails; exchanges now issue 1099 forms, covered in my tax guide.
- The privacy cost is real: exchange databases hold identity documents, and breaches have leaked them. The 2020 Ledger customer-data leak, detailed in my hardware review, shows how marketing databases alone fuel years of phishing.
Risks and Common Mistakes
- Chasing no-KYC venues to avoid the paperwork. The tradeoffs are unregulated counterparties, exit-scam exposure, frozen-funds risk with no recourse, and none of it removes your tax obligations, which attach to the transactions, not the venue's paperwork.
- Submitting documents to small platforms with no reputation: identity fraud is the harvest. KYC is a reason to be pickier about venues, not less.
- Confusing KYC with safety. Verification protects the system from launderers; it does not make the platform solvent. See proof of reserves.
When It Matters
Every fiat on-ramp and regulated venue, and the moment you wonder who can see your history: assume the exchange, its regulators, and anyone who breaches it. Self-custody moves the coins, not the records already made.
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