Last week I handled a case to verify a contributor for the DAO and realized a quite clear issue.
The contributor has a good reputation on Ethereum, but the DAO runs on Solana → almost has to be reviewed from the beginning. The data that has been verified earlier can almost not be reused.
This is precisely the issue of fragmentation in Web3.
Currently verified data is still divided by each ecosystem. KYC on this chain has no value on another chain. Contribution history or audits are also difficult to reuse if they do not follow the same standard.
What I find interesting about Sign is that they do not attempt to "transfer data" between chains but focus on standardizing how data is defined.
Schema registry helps unify the structure of claims.
SpIDs create cross-chain identifiers.
Attestation turns data into proof that can be read and reused across different systems.
For me, fragmentation does not lie in where the data is, but in whether the systems can understand that data or not.
When chains start to "speak the same language" about verified data, then interoperability will truly occur.