BE-70: Secure Webhook Verification Service with Ed25519 Cryptographic Signatures

[chinweobtagaz]

Problem Statement

Third-party apps integrating with KnightVerse need tamper-proof webhook notifications for match completions and wager payouts.

Proposed Solution

1. Generate unique Ed25519 keypair for KnightVerse backend webhook signer.
2. Include X-KnightVerse-Signature and X-KnightVerse-Timestamp headers in all outbound webhook POST requests.
3. Provide documentation and sample verification code in Python, Rust, and TypeScript.

Acceptance Criteria

• All outbound webhook payloads cryptographically signed with Ed25519.
• Replay protection via 5-minute timestamp tolerance validation.
• Unit tests validating signature generation and verification.

[Joyful12-tech]

@Joyful12-tech has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi! Can I work on this? Kindly assign me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Joyful12-tech to this issue.