12cKiMNhCtBhZRUBCnYXo8A4WQzMUtYjmR

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 638,851 on 2020-07-12 (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

sigmapoolcom reward address (coinbase-extracted)

Received block rewards as part of sigmapoolcom's coinbase output across 172 block(s) between heights 636492 and 721918. 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
Sigmapool.com reward address

Used by the Sigmapool.com mining pool. Tags: /Sigmapool.com/.

mining pool view
Sigmapool.com reward address

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

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