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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 245,219 on 2013-07-07 (input_spend).

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

What we know about this address 6 findings ✓ corroborated by 6 sources

ghashio reward address (coinbase-extracted)

Received block rewards as part of ghashio's coinbase output across 23040 block(s) between heights 250205 and 435686. 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
GHash.IO reward address

Used by the GHash.IO mining pool. Tags: ghash.io.

mining pool view
GHash.IO reward address

Reward address for the GHash.IO mining pool, per the sysfix/mining-pool-addresses registry (fork of btccom/Blockchain-Known-Pools). Pool tags: ghash.io.

mining pool view
GHash.io (Pools)

Address attributed to 'GHash.io' on walletexplorer.com (category: Pools). Balance 0.4139 BTC across 23339 incoming txs; last used in block 813,859.

mining pool view
WatchYourBack: mining:ghash.io

Tagged as 'mining' (subcategory: ghash.io) in the WatchYourBack tagging dataset. Sub-source: miner. File: graphsense-tagpacks/20210201_graphsense_walletexplorer.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