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(TokenID, FromAddress, ToAddress) -> UpdatedOwnership
Intercept token transfers to revert any transactions where both the sender and receiver are non-zero addresses.
Problem it solves
Credential tokens representing personal reputation or identity must be non-transferable and tied to a single address.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.