1AB131Kb3XRsyvhmmtpQXkrFWcJteEfyd8

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 439,006 on 2016-11-15 (input_spend).

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

What we know about this address 4 findings ✓ corroborated by 4 sources

phashio reward address (coinbase-extracted)

Received block rewards as part of phashio's coinbase output across 41 block(s) between heights 439151 and 464213. 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
BTCCPool (Pools)

Address attributed to 'BTCCPool' on walletexplorer.com (category: Pools). Balance 0.0000 BTC across 42 incoming txs; last used in block 464,621.

mining pool view
WatchYourBack: mining:phash.io

Tagged as 'mining' (subcategory: phash.io) in the WatchYourBack tagging dataset. Sub-source: miner. File: graphsense-tagpacks/20220510_graphsense_miners.tags.

mining pool view
miners

Tagged as 'miners' in GraphSense pack 'miners' (category: miner, confidence: forensic). Cited source: https://github.com/MatteoRomiti/Deep_Dive_BTC_Mining_Pools/blob/master/dataset/miners.json

mining pool view