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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 552,528 on 2018-12-04 (input_spend).

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

What we know about this address 4 findings

Top-5 by balance, Nov 2014 snapshot

Held 66,452.06 BTC at the time of the snapshot. One of several near-identical 66K balances in the 2014 top-10, suggesting a single entity split equal chunks across multiple cold wallets.

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