1EofoZNBhWQ3kxfKnvWkhtMns4AivZArhr

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 123,054 on 2011-05-10 (input_spend).

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

What we know about this address 7 findings ✓ corroborated by 2 sources

Meni Rosenfeld (Israeli Bitcoin Association founder)

Self-disclosed signature address of Meni Rosenfeld (u=5776), Israeli mathematician and founder of the Israeli Bitcoin Association. Early Bitcoin researcher known for analyses of mining-pool reward systems and double-spend probability.

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eligius reward address (coinbase-extracted)

Received block rewards as part of eligius's coinbase output across 1 block(s) between heights 173508 and 173508. Attribution derived from on-chain coinbase scriptSig tag matching plus Jameson Lopp's blocks.csv mapping; this is hard evidence the address received pool rewards under that pool's signature, not clustering inference.

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