None of the existing examples cover a "chain of trust about trust" pattern where a registry attests to an auditor's credibility, and that auditor in turn attests to a specific carbon-offset project's claims — distinct from the supply-chain example's single-party provenance model, and a realistic, high-interest use case for on-chain attestation given growing demand for verifiable ESG/carbon-credit claims.
Suggested fix: add examples/carbon-credit-verification modeling a registry issuing AUDITOR_ACCREDITED attestations to auditors, and accredited auditors issuing OFFSET_VERIFIED attestations to specific projects, with a verifier that checks the full chain (project → auditor → registry) before trusting an offset claim.
Acceptance criteria: a runnable example demonstrates the two-tier verifier-of-verifiers chain and a script that validates it end-to-end.
None of the existing examples cover a "chain of trust about trust" pattern where a registry attests to an auditor's credibility, and that auditor in turn attests to a specific carbon-offset project's claims — distinct from the supply-chain example's single-party provenance model, and a realistic, high-interest use case for on-chain attestation given growing demand for verifiable ESG/carbon-credit claims.
Suggested fix: add
examples/carbon-credit-verificationmodeling a registry issuingAUDITOR_ACCREDITEDattestations to auditors, and accredited auditors issuingOFFSET_VERIFIEDattestations to specific projects, with a verifier that checks the full chain (project → auditor → registry) before trusting an offset claim.Acceptance criteria: a runnable example demonstrates the two-tier verifier-of-verifiers chain and a script that validates it end-to-end.