Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0420b15c385a0869218b592224cb8e2e01b3ae56fefcb2d540df829d290b9575f7daa55438d0c189617637b70baf842d3130a9e7143d123d7f2328cd8460025b7b