1XPTgDRhN8RFnzniWCddobD9iKZatrvH4

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 51,728 on 2010-04-18 (input_spend).

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

What we know about this address 7 findings

Laszlo Hanyecz (self-disclosed Bitcoin address, 2010, topic=109)

Bitcoin address self-disclosed by Laszlo Hanyecz in bitcointalk topic=109 (2010): 'My Bitcoin address is 1XPTgDRhN8RFnzniWCddobD9iKZatrvH4 -Laszlo'. One of laszlo's actual primary addresses from the era of the famous Pizza Day transaction; distinct from the signature address that appeared on his later posts.

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