13hQVEstgo4iPQZv9C7VELnLWF7UWtF4Q3

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 498,001 on 2017-12-07 (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 6 sources

bixin reward address (coinbase-extracted)

Received block rewards as part of bixin's coinbase output across 1377 block(s) between heights 497859 and 592811. 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
Bixin reward address

Used by the Bixin mining pool. Tags: /Bixin/, /HaoBTC/, HAOBTC.

mining pool view
Bixin reward address

Reward address for the Bixin mining pool, per the sysfix/mining-pool-addresses registry (fork of btccom/Blockchain-Known-Pools). Pool tags: /Bixin/, /HaoBTC/, HAOBTC.

mining pool view
HaoBTC.com (Services/others)

Address attributed to 'HaoBTC.com' on walletexplorer.com (category: Services/others). Balance 69.2301 BTC across 1385 incoming txs; last used in block 925,876.

service view
WatchYourBack: mining:bixin

Tagged as 'mining' (subcategory: bixin) 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
WatchYourBack: service:haobtc.com

Tagged as 'service' (subcategory: haobtc.com) in the WatchYourBack tagging dataset. Sub-source: service. File: graphsense-tagpacks/20210201_graphsense_walletexplorer.tags.

service view