币界网报道：According to the news on June 28, Ethereum co-founder Vitalik Buterin published an article titled "Does digital identity have risks even after ZK wrapping?", which pointed out that ZK-wrapping solves many important problems, but zero-knowledge proof ID cards still have risks. These risks seem to have nothing to do with biometrics. Most of the risks (privacy leakage, vulnerability to coercion, errors) come from trying to maintain the attribute of "one person, one identity". The other extreme is to use "proof of wealth" to conduct anti-sybil attacks, but this is not enough in too many use cases, so something "similar to ID" is needed. The theoretical ideal is somewhere in between. This ideal is difficult to achieve in practice, but the correct "multiple identities" are close to the goal, so it is also the best practical solution. Multiple identities can be explicit (for example, based on social graphs) or implicit (multiple types of zero-knowledge proofs, and the market share of any single type cannot approach 100%).