31 CFR §501.601 — Records and recordkeeping requirements
OFAC recordkeeping rule. Every person engaging in any transaction subject to the OFAC sanctions regulations (31 CFR chapter V) must keep a full and accurate record of each such transaction for at least 10 years; every person holding blocked property must keep a full and accurate record of that property while it is blocked and for 10 years after it is unblocked.
Verbatim regulatory text
Verbatim provisions from 31 CFR §501.601 — Records and recordkeeping requirements — each quote is a verified substring of the regulator-published source snapshot, not retyped. Quoted for reference; this is not legal advice. The operational layer (P&P updates, prompts) lives in the regulation update kits.
31 CFR §501.601 — 10-year transaction recordkeeping
Except as otherwise provided, every person engaging in any transaction subject to the provisions of this chapter shall keep a full and accurate record of each such transaction engaged in, regardless of whether such transaction is effected pursuant to license or otherwise, and such record shall be available for examination for at least 10 years after the date of such transaction.