1Ay8vMC7R1UbyCCZRVULMV7iQpHSAbguJP

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 761,392 on 2022-11-02 (input_spend).

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

What we know about this address 6 findings

Upbit (cold wallet)

The viral 'Mr. 100' whale, named for its routine ~100 BTC daily sweep pattern. Upbit publicly identified this address as one of their cold wallets in response to mystery-whale framing in the press. Cluster analysis matches the disclosure: ~100 BTC sweeps in from Upbit deposit wallets, outflows fund Upbit hot wallets used for customer withdrawals. OKLink and Arkham Intelligence both tag the address Upbit. Provenance: HIGH, self-disclosed by Upbit.

label view
exchange

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upbit

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cold-wallet

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mr-100

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self-disclosed

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