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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 689,113 on 2021-06-29 (input_spend).

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

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

OFAC sanctioned (Huihui WU)

On the U.S. Treasury OFAC SDN list under program DPRK3. SDN UID 42496. Last synced 2026-06-21.

sanctioned view
OpenSanctions: Japan Economic Sanctions and List of Eligible People

On the OpenSanctions consolidated sanctions list, dataset 'Japan Economic Sanctions and List of Eligible People'. Schema: CryptoWallet.

sanctioned view