Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04b121216af78630eed95e7239818a6f3c0ca3546c8cff6d31af080f390cb2b3cde8bb36aeff74824654e26842b7de47f8293c61b9e98558df7d58f3a21dbdba39