What is Spot Bitcoin ETF?
An exchange-traded fund holding bitcoin directly, giving regulated exposure without the holder ever touching a key.
Spot products created an access route for capital that could not or would not self-custody. That was genuinely significant for flows.
They changed nothing about the protocol, the supply schedule or self-custody, and they introduced a consideration worth watching: a growing share of supply held by a small number of custodians on behalf of holders who never control a key.
Holding an ETF is not holding bitcoin. It is a regulated claim on a custodian who holds bitcoin.
Related terms
Custodial
An arrangement where a third party holds the keys and you hold a claim against them.
Keys & custodyNot your keys, not your coins
The maxim that coins held by a third party are that party's coins and your claim against them.
EconomicsCounterparty risk
The risk that the other side of an arrangement fails to deliver — an exchange, a custodian, a lender.
This definition is part of the Bitcoin Logical glossary. For the fuller explanation, start with Aprender, or see the live numbers on O Sinal Bitcoin.