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feat: spikes 645-648 (SEP-50, cross-chain verification, explorer integration) - #576

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Darkvader-ship-it merged 2 commits into
PHASE-STELLAR:mainfrom
EmmanuelOchaje:feat/issues-507-508-509-510
Oct 18, 2026
Merged

Darkvader-ship-it merged 2 commits into
PHASE-STELLAR:mainfrom
EmmanuelOchaje:feat/issues-507-508-509-510

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@EmmanuelOchaje

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Summary

Implements four spikes advancing PHASE ecosystem integration:

  • Spike 645 (SEP-50 Conformance): Full SEP-50 NFT standard compliance with expanded metadata fields
  • Spike 646 (EVM Bridge): Design/architecture document for lock/mint bridge mechanics
  • Spike 647 (Cross-Chain Verification): Proof relay contract for Stellar as witness layer
  • Spike 648 (Explorer Integration): Collection verification badges and deep-links to ecosystem explorers

Changes

Spike 645 — SEP-50 Compliance

  • Enhanced token_metadata() with required SEP-50 fields: mime_type, properties
  • Properties JSON includes: token_id, phase_level, collection_id
  • Maintains backward compatibility with existing metadata queries

Spike 647 — Cross-Chain Verification

  • New proof-relay Soroban contract
  • submit_proof() / verify_proof() / get_proof() functions
  • Multi-signature threshold verification (3-of-N configurable)
  • Chainwhitelist for supported external systems
  • Nonce-based replay protection
  • API endpoints: POST/GET /api/proof-verify

Spike 648 — Explorer Integration

  • New explorer-metadata Soroban contract
  • Collection verification with admin badge control
  • Deep-links to Stellar Expert and Soroban Explorer
  • React components: VerificationBadge, ExplorerLinks
  • API endpoints: POST/GET /api/explorer-verify

Spike 646 — EVM Bridge Design

  • Architecture document covering lock/mint mechanics
  • Validator set and attestation strategy
  • Stellar contract interface sketch
  • Security considerations (replay protection, timeouts, pause mechanisms)

Documentation

  • Updated PROJECT_ARCHITECTURE.md with new contracts and API endpoints
  • Spike design documents in root directory

Test Plan

  • SEP-50 metadata fields verified via explorer
  • Cross-chain proofs submit and verify correctly
  • Collection verification badges display on NFT pages
  • Stellar Expert deep-links resolve correctly
  • Replay protection rejects duplicate nonces
  • Admin-only verify operations gated properly

Closes #507
Closes #508
Closes #509
Closes #510

Spike 645 (SEP-50 Conformance):
- Add mime_type and properties fields to token_metadata()
- Include token_id, phase_level, collection_id in properties JSON
- Full SEP-50 compliance for metadata structure

Spike 647 (Cross-Chain Verification):
- New proof-relay contract for multi-sig verification
- submit_proof(), verify_proof(), get_proof() functions
- Chainwhitelist and nonce-based replay protection
- Validator set with configurable threshold
- API endpoints for proof submission and status check

Spike 648 (Explorer Integration):
- New explorer-metadata contract for collection verification
- set_explorer_metadata(), verify_collection() for admin badge management
- Deep-linking to Stellar Expert and Soroban Explorer
- VerificationBadge and ExplorerLinks UI components
- API endpoints for metadata registration and retrieval

Closes PHASE-STELLAR#507
Closes PHASE-STELLAR#509
Closes PHASE-STELLAR#510
@drips-wave

drips-wave Bot commented Oct 18, 2026

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@EmmanuelOchaje Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits

@Darkvader-ship-it
Darkvader-ship-it merged commit c705e4a into PHASE-STELLAR:main Oct 18, 2026
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