Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 04219976371abc266a83ce55bcce59767388acc9086adb434916eef64da8c16c14c043d875b689b50ce7c9eba576a9ba0ab8b92290637aff81b8e481882dfe48c2