15rQXUSBQRubShPpiJfDLxmwS8ze2RUm4z

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 351,607 on 2015-04-11 (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

21inc reward address (coinbase-extracted)

Received block rewards as part of 21inc's coinbase output across 36 block(s) between heights 351321 and 353753. 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
21 Inc. reward address

Used by the 21 Inc. mining pool. Tags: /pool34/.

mining pool view
21 Inc. reward address

Reward address for the 21 Inc. mining pool, per the sysfix/mining-pool-addresses registry (fork of btccom/Blockchain-Known-Pools). Pool tags: /pool34/.

mining pool view
WatchYourBack: mining:21-inc.

Tagged as 'mining' (subcategory: 21-inc.) 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