1F1xcRt8H8Wa623KqmkEontwAAVqDSAWCV

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 399,161 on 2016-02-19 (input_spend).

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

What we know about this address 5 findings ✓ corroborated by 5 sources

1hash reward address (coinbase-extracted)

Received block rewards as part of 1hash's coinbase output across 1878 block(s) between heights 401094 and 498050. 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
1Hash reward address

Used by the 1Hash mining pool. Tags: Mined by 1hash.com.

mining pool view
1Hash reward address

Reward address for the 1Hash mining pool, per the sysfix/mining-pool-addresses registry (fork of btccom/Blockchain-Known-Pools). Pool tags: Mined by 1hash.com.

mining pool view
WatchYourBack: mining:1hash

Tagged as 'mining' (subcategory: 1hash) 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