Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421519a33d35d44b7304d3712ec87abdda0fdb9ac04b140060873a025bf0aa42016c39ed797f0a8ad78e610b951c32919e4f8a417e46b361f184c5c4b650bc70a