Quantum exposed: this address has revealed its public key in a prior spend. A sufficiently powerful quantum computer could derive the private key.
pubkey 0421d6a568811e1e8c088b0b568b89ee784c4a9ffc20dcb83cc033fd44081a210e2d28b8b733e31496f5a0e0fe72c259048c084f5c7faf79c5a411c937d376c42b