19G6VFcV1qZJxe3Swn28xz3F8gDKTznwEM

P2PKH (1)

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Quantum exposure Reuse-exposed

P2PKH · reuse-exposed

P2PKH addresses hide the pubkey behind a SHA-256 + RIPEMD-160 hash UNTIL the first outgoing spend, which reveals it in the signature script or witness data. This address has been spent from, so its pubkey is permanently on chain. Every subsequent UTXO at this address is just as exposed as the moment of first spend.

First revealed at block 268,117 on 2013-11-05 (input_spend).

Context: Bitcoin quantum exposure report · Top exposed addresses · Quantum and Bitcoin (LearnBitcoin.com)

What we know about this address 5 findings

Andrew Miller (UMD cryptographer, 'amiller')

Signature address of Andrew Miller (socrates1024, u=5570), University of Maryland cryptography researcher (research@umd) and 'amiller on freenode'. Studies Merkle trees, credit networks, Byzantine consensus.

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