Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0447b40e757c493bd3c37bdaa6e12d88a4c146d2cd5324b80198ab4bafb5385bfebc7c477d6266f7806fb5fe60d91bc5183c805e68acdef3dd995dbd7be99ece4a