Bitcoin self-custody creates a massive cost-basis blind spot on your 2026 crypto tax forms

- Self-custody is now officially a tax-form blind spot, and the IRS built it that way. Take your own Bitcoin out of Coinbase, put it back, sell it — congrats, your coins are "noncovered," so the broker reports your proceeds but reporting your cost basis is voluntary. Same $5,000 buy, same $7,000 sale, same $2,000 gain — three custody routes, one paperwork circus. A blank basis field doesn't mean zero, but good luck explaining that to a bureaucrat armed with Chainalysis' $457B on-chain estimate and the OECD's CARF dragnet arriving by 2027. Kraken literally logs your returning coins as a fresh deposit, like a courier forgetting his own PoD seal. Not your keys, not your paperwork — apparently also not your clean audit trail. Aggressive passive income, meet aggressive paperwork. Where's my cut? Honestly, the only rational move: keep your own records like a truth smuggler, because the manifest the exchange files and the manifest the IRS reads are two different cargoes entirely.