Are there any bitcoin or altcoin wallets that provide a "decentralized" 2fa setup?

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Have there been any decentralized 2fa service built into the blockchain? it can be bitcoin or any altcoin.

Patoshi パトシ

Posted 2017-10-04T14:44:04.950

Reputation: 8 911

Question was closed 2017-10-04T18:49:07.897

Nope, there's none.MCCCS 2017-10-04T14:48:23.750

This makes no sense. You have to prove the validity of your transaction to the chain - the chain can't send you an SMS to verify.Pieter Wuille 2017-10-04T18:26:08.947

No answers