1FFxkVijzvUPUeHgkFjBk2Qw8j3wQY2cDw

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 655,247 on 2020-11-03 (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

foundryusa reward address (coinbase-extracted)

Received block rewards as part of foundryusa's coinbase output across 67 block(s) between heights 655253 and 668454. 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
Foundry USA reward address

Used by the Foundry USA mining pool. Tags: /2cDw/, Foundry USA Pool.

mining pool view
Foundry USA reward address

Reward address for the Foundry USA mining pool, per the sysfix/mining-pool-addresses registry (fork of btccom/Blockchain-Known-Pools). Pool tags: /2cDw/, Foundry USA Pool.

mining pool view
miners_additional

Tagged as 'miners_additional' in GraphSense pack 'miners_additional' (category: miner, confidence: unspecified). Cited source: https://github.com/MatteoRomiti/Deep_Dive_BTC_Mining_Pools/

mining pool view