Использование _конкретного_ кошелька для _биткоина_ и типа они даже проверить это могут. Блокировка вывода с non-custodial кошелька.

ну и...
10 минут...притом что для биткоина за это время только 1 блок сосчитается, и с самого начала была рекомендация ждать 6 подтверждений. Даже на более менее популярных ресурса по биткоину - прямо пишут https://en.bitcoin.it/wiki/Irreversible_Transactions#Attack_vectors
Traders and merchants who accept a payment immediately on seeing "0/unconfirmed" are exposed to the transaction being reversed. An attempt at fraud could work that the fraudster sends a transaction paying the merchant directly to the merchant, and sends a conflicting transaction spending the coin to himself to the rest of the network. It is likely that the second conflicting transaction will be mined into a block and accepted by bitcoin nodes as genuine.

Merchants can take precautions (e.g., disable incoming connections, only connect to well connected nodes) to lessen the risk of a race attack but the risk cannot be eliminated. Therefore, the cost/benefit of the risk needs to be considered when accepting payment on 0/unconfirmed when there is no recourse against the attacker.

The research paper Two Bitcoins at the Price of One finds that the protocol allows a high degree of success by an attacker in performing race attacks. The method studied in the research paper depends on access to the merchant's Bitcoin node which is why that even prior to this paper, recommendations for merchants include disabling incoming connections and to choose specific outgoing connections.[1]

Ну немного хоть надо понимать как блокчейн работает и почему задержки важны.