Add public API for third-party certificate verification

[AnnabelJoe]

Description

Regulators and buyers need a public API to verify certificates without creating an account. The current verifier is UI-only.

Acceptance Criteria

• GET /api/v1/verify/:certificateId returns full chain of custody
• No authentication required
• Response includes: meter ID, reading, signature, anchor tx, certificate, retirement status
• Rate limited to prevent abuse
• Documented in OpenAPI spec

Priority

High

Estimated Effort

Medium

Dependencies

OpenAPI spec, rate limiting

Labels

enhancement, product

[ScriptedBro]

@ScriptedBro has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi, I’m a backend developer experienced in blockchain audit trails and public verification APIs. I will implement GET /api/v1/verify/:certificateId as a public, unauthenticated endpoint returning the full certificate chain of custody, including meter ID, readings, signature, anchor transaction, certificate data, and retirement status. I will also enforce rate limiting to prevent abuse and ensure the endpoint is fully documented in the OpenAPI spec for external consumers.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ScriptedBro to this issue.

[Sammy-Samy]

@Sammy-Samy has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

please assign

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Sammy-Samy to this issue.

[drips-wave]

Congratulations, @Sammy-Samy! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Sammy-Samy: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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