Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0491a71a7545684b1d18a2f17ea31e1e07b24a476440508863b91abcaf59902167190d361df9d922f2f2a47657bfd1fea58082a2e738c744816b72e215190cf394