Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421e9ad91cce3fbd61996f1c69c14a028db44428d581f22d01b381a0d442b19deb5c2abeac02f3bbe5ddc76f7d5da24ed25bfefd1fbef21d80a61f1af81b4e197