In 2015, Tim Berners-Lee — the inventor of the World Wide Web — was asked about blockchain-based identity and gave a direct answer: The chain is too slow. The chain is too expensive. The chain is too public. He was right. A decade later, the identity-on-blockchain conversation has matured. Most credible identity projects no longer propose storing personal data on chain. The cryptography has gotten more refined; the architectural discipline has improved; the lessons of "let's just put ev...