[BOUNTY] Create Mainnet Launch Checklist

docs/mainnet-launch-checklist.md

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+# 🚀 PrivacyLayer Mainnet Launch Checklist
+
+> **Status:** Pre-Launch
+> **Last Updated:** 2026-03-25
+> **Version:** 1.0
+
+This comprehensive checklist ensures PrivacyLayer is ready for mainnet deployment. All items must be completed and verified before launch.
+
+---
+
+## 🔐 Security Checklist
+
+### Cryptographic Security
+- [ ] **BN254 Implementation Verified** - Confirm BN254 host functions match specification (CAP-0074)
+- [ ] **Poseidon Hash Verified** - Confirm Poseidon2 host functions match specification (CAP-0075)
+- [ ] **Circuit Security Review** - Independent review of Noir circuit logic
+- [ ] **Nullifier Collision Analysis** - Verify no collision vulnerabilities
+- [ ] **Commitment Scheme Audit** - Confirm commitment generation is cryptographically secure
+- [ ] **Merkle Tree Implementation** - Verify tree depth and insertion logic
+- [ ] **Groth16 Verification** - Confirm on-chain proof verification correctness
+
+### Smart Contract Security
+- [ ] **Reentrancy Protection** - All external calls protected
+- [ ] **Integer Overflow/Underflow** - Use checked math operations
+- [ ] **Access Control** - Admin functions properly restricted
+- [ ] **Pause Mechanism** - Emergency pause functionality tested
+- [ ] **Upgrade Path** - Define upgrade process (if any)
+- [ ] **State Machine Integrity** - All state transitions validated
+- [ ] **Event Emission** - All critical operations emit events
+
+### Key Management
+- [ ] **Admin Key Generation** - Secure key generation process
+- [ ] **Multi-Signature Setup** - Admin functions behind multi-sig
+- [ ] **Key Backup** - Secure backup of all critical keys
+- [ ] **Key Rotation Plan** - Document key rotation procedures
+
+---
+
+## 🔍 Audit Requirements
+
+### Pre-Launch Audits
+- [ ] **Circuit Audit** - Professional ZK circuit audit completed
+- [ ] **Contract Audit** - Professional smart contract audit completed
+- [ ] **Integration Audit** - End-to-end flow audit completed
+- [ ] **Cryptography Review** - Academic/expert review of cryptographic choices
+
+### Audit Reports
+- [ ] Store all audit reports in `docs/audits/`
+- [ ] Address all critical findings
+- [ ] Address all high-priority findings
+- [ ] Document medium/low findings with risk acceptance
+
+---
+
+## 🧪 Testing Requirements
+
+### Unit Tests
+- [ ] **Circuit Tests** - 100% coverage of circuit logic
+  - [ ] Commitment circuit edge cases (zero, max values)
+  - [ ] Withdrawal circuit all branches
+  - [ ] Merkle tree operations
+- [ ] **Contract Tests** - 100% coverage of contract functions
+  - [ ] Deposit flow
+  - [ ] Withdraw flow
+  - [ ] Admin functions
+  - [ ] Error handling
+- [ ] **SDK Tests** - Client library coverage
+- [ ] **Frontend Tests** - UI component coverage
+
+### Integration Tests
+- [ ] **End-to-End Deposit** - User can deposit and see balance
+- [ ] **End-to-End Withdraw** - User can withdraw to new address
+- [ ] **Multi-User Scenarios** - Concurrent deposits/withdraws
+- [ ] **Edge Cases** - Empty pool, full tree, gas limits
+
+### Testnet Validation
+- [ ] **Stellar Testnet Deployment** - Contract deployed to testnet
+- [ ] **Full Flow Testing** - All user flows tested on testnet
+- [ ] **Load Testing** - Simulate high transaction volume
+- [ ] **Failure Recovery** - Test failure scenarios
+
+### Security Testing
+- [ ] **Fuzz Testing** - Fuzz inputs to circuits and contracts
+- [ ] **Economic Attacks** - Test withdrawal race conditions
+- [ ] **Front-Running Analysis** - Assess front-running risks
+
+---
+
+## 📦 Deployment Procedures
+
+### Pre-Deployment
+- [ ] **Contract Bytecode Frozen** - Final bytecode committed
+- [ ] **Deployment Scripts Tested** - Scripts work on testnet
+- [ ] **Deployment Keys Ready** - Secure deployment keys prepared
+- [ ] **Network Configuration** - Correct Stellar network config
+
+### Deployment Steps
+1. [ ] **Deploy Privacy Pool Contract** - Record contract ID
+2. [ ] **Initialize Contract** - Set admin, denominations, tree depth
+3. [ ] **Verify Deployment** - Confirm contract state
+4. [ ] **Transfer Admin to Multi-Sig** - Move admin to secure multi-sig
+5. [ ] **Deploy SDK** - Publish npm package
+6. [ ] **Deploy Frontend** - Deploy web application
+
+### Post-Deployment
+- [ ] **Verify Contract on Explorer** - Confirm verified source
+- [ ] **Test Live Deposit** - Small test deposit
+- [ ] **Test Live Withdraw** - Small test withdraw
+- [ ] **Monitor Events** - Confirm event emission
+- [ ] **Document Deployment** - Record all addresses and tx hashes
+
+---
+
+## 🔄 Rollback Plans
+
+### Contract Rollback
+- [ ] **Pause Capability** - Document how to pause contract
+- [ ] **Emergency Withdrawal** - Document emergency fund recovery
+- [ ] **Migration Path** - Plan for migrating to new contract if needed
+
+### Frontend/SDK Rollback
+- [ ] **Version Pinning** - Users can use previous versions
+- [ ] **Rollback Procedure** - Document how to revert deployments
+
+### Communication During Rollback
+- [ ] **Status Page** - Where to check system status
+- [ ] **Notification Channels** - Twitter, Discord, GitHub
+- [ ] **User Communication** - Template messages for incidents
+
+---
+
+## 📢 Communication Strategy
+
+### Pre-Launch
+- [ ] **Announcement Draft** - Prepare launch announcement
+- [ ] **Blog Post** - Technical blog post explaining the system
+- [ ] **Documentation** - Complete user documentation
+- [ ] **FAQ** - Anticipated questions answered
+
+### Launch Day
+- [ ] **Social Media Posts** - Twitter, Discord announcements
+- [ ] **Stellar Community** - Post in Stellar community channels
+- [ ] **Press Release** - If applicable
+
+### Post-Launch
+- [ ] **Monitoring Dashboard** - Public or team-facing monitoring
+- [ ] **Support Channels** - Discord/forum for user support
+- [ ] **Issue Tracking** - GitHub issues for bugs/feedback
+
+---
+
+## 📋 Final Pre-Launch Checklist
+
+### 24 Hours Before Launch
+- [ ] All audits complete and findings addressed
+- [ ] All tests passing on testnet
+- [ ] Deployment scripts tested
+- [ ] Team briefed on launch procedures
+- [ ] Communication materials ready
+
+### Launch Day
+- [ ] Final team sync
+- [ ] Deploy contracts
+- [ ] Verify deployment
+- [ ] Test live transactions
+- [ ] Publish announcement
+- [ ] Monitor for issues
+
+### 24 Hours After Launch
+- [ ] Monitor system health
+- [ ] Address any user issues
+- [ ] Document any incidents
+- [ ] Plan next steps
+
+---
+
+## 🔗 Related Documents
+
+- [`CONTRIBUTING.md`](../CONTRIBUTING.md) - Contribution guidelines
+- [`README.md`](../README.md) - Project overview
+- [`contracts/privacy_pool/ARCHITECTURE.md`](../contracts/privacy_pool/ARCHITECTURE.md) - Contract architecture
+- [`docs/threat-model.md`](threat-model.md) - Threat model analysis
+
+---
+
+## 📞 Emergency Contacts
+
+| Role | Contact |
+|------|---------|
+| Technical Lead | [TBD] |
+| Security Lead | [TBD] |
+| Operations | [TBD] |
+
+---
+
+*This checklist is a living document. Update as requirements evolve.*
+
+*Last reviewed: 2026-03-25*