15zzp2HB41HDYQrxBD7fQtGCfekkeqG2te

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 311,775 on 2014-07-21 (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

kncminer reward address (coinbase-extracted)

Received block rewards as part of kncminer's coinbase output across 35 block(s) between heights 309196 and 319345. 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.

mining-pool view
Kraken.com-old (Exchanges)

Address attributed to 'Kraken.com-old' on walletexplorer.com (category: Exchanges). Balance 0.0000 BTC across 35 incoming txs; last used in block 320,800.

exchange view