Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04b21a5ed039cc74f35e90355232c7c8bc5df8f81abed3a9a74ee84e08e4e31ed5c816b5dc3a2821d1a12886527701241ddffcef76f591e9468efd629ac79bd140