Implement Stellar Transaction Verification Service

[SudiptaPaul-31]

Feature: Stellar Transaction Verification Service

Description
Implement a service that verifies Stellar transactions before recording associated group actions. This ensures only valid, confirmed transactions trigger updates in the system.

Tasks

• Fetch transaction details from Stellar network (transaction ID lookup)
• Validate transaction status (successful, failed, pending)
• Store verification results in database with reference to group action
• Provide API endpoint for transaction verification checks
• Add error handling and logging for failed or invalid transactions

Acceptance Criteria

• Failed transactions are rejected and not recorded
• Verified transactions are stored with proper status and timestamp
• Proper error messages returned for invalid or failed transactions
• Service integrates seamlessly with group action workflows
• Unit tests included for transaction validation and error handling

[temitope-007]

@temitope-007 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi maintainer

I'd like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @temitope-007 to this issue.

[OlaBakare]

@OlaBakare has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, I'd love to work on this issue. I can handle this issue.
Thank you.

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

[drips-wave]

Congratulations, @OlaBakare! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @OlaBakare: 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.

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