Kairos is the proof-native Layer 1 blockchain: every block carries one proof that the entire chain is valid, so anyone can verify everything in seconds instead of replaying years of history. There are no public keys and no signatures, because you prove you own your coins with a zero-knowledge proof, and the proof system is hash-based with no trusted setup. The web testnet, browser mining and Photo Key wallet are live today, and $KAIROS holders migrate into native KAI at mainnet genesis.