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- Changed pytest calls to use `venv/bin/python -m pytest` with explicit config - Added `--rootdir "$PWD"` and `--import-mode=importlib` for consistent imports - Fixed PYTHONPATH to use absolute paths with $PWD prefix - Added smart contract security scanning for Solidity files - Added Circom circuit security checks for ZK proof circuits - Added ZK proof implementation security validation - Added contracts/** to security scanning workflow
315 lines
9.1 KiB
Markdown
315 lines
9.1 KiB
Markdown
---
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description: Smart Contract Security Sprint - Dedicated remediation for contract-level findings
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---
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# Smart Contract Security Sprint
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This document outlines the dedicated security sprint for addressing smart contract-level security findings deferred from the initial remediation phase.
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## Sprint Overview
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**Status:** ⏳ Not Started
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**Sprint Duration:** 2-3 weeks
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**Scope:** 8 security findings (5 High, 3 Medium)
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**Components:** AgentStaking.sol, AIServiceAMM.sol, EscrowService.sol, AIToken.sol
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## Deferred Findings
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### High Severity (5 findings)
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#### 1. No Slashing Mechanism in AgentStaking.sol
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**Finding ID:** SC-H-01
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**Component:** contracts/contracts/AgentStaking.sol
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**Status:** Open
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**Description:**
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The contract has a `SLASHED` status enum but no actual slashing implementation. Malicious agents can act without consequences.
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**Required Changes:**
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- Implement slashing logic based on performance metrics
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- Add slashing conditions (e.g., accuracy below threshold, missed jobs)
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- Add slashing governance mechanism
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- Implement appeal process for slashed agents
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- Add slashing rewards to reporters
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**Testing:**
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- Unit tests for slashing conditions
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- Integration tests for slashing execution
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- Governance tests for slashing approval
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#### 2. Lack of Oracle Manipulation Protection in AgentStaking.sol
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**Finding ID:** SC-H-02
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**Component:** contracts/contracts/AgentStaking.sol
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**Status:** Open
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**Description:**
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The `updateAgentPerformance` function (line 429) lacks oracle authorization checks. Any caller can update performance metrics.
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**Required Changes:**
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- Add authorized oracle list with governance control
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- Implement oracle signature verification
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- Add time delay for performance updates
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- Implement oracle rotation mechanism
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- Add oracle reputation scoring
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**Testing:**
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- Oracle authorization tests
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- Performance update validation tests
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- Oracle rotation tests
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#### 3. AMM Vulnerable to Flash Loan Attacks in AIServiceAMM.sol
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**Finding ID:** SC-H-03
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**Component:** contracts/contracts/AIServiceAMM.sol
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**Status:** Open
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**Description:**
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The AMM lacks TWAP (Time-Weighted Average Price) protection against flash loan manipulation.
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**Required Changes:**
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- Implement TWAP price oracle
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- Add price deviation limits
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- Implement flash loan detection
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- Add minimum time delay for swaps
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- Implement circuit breaker for abnormal price movements
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**Testing:**
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- Flash loan simulation tests
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- Price manipulation tests
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- TWAP validation tests
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#### 4. No Front-Running Protection in AIServiceAMM.sol
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**Finding ID:** SC-H-04
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**Component:** contracts/contracts/AIServiceAMM.sol
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**Status:** Open
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**Description:**
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The AMM lacks front-running protection for trades.
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**Required Changes:**
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- Implement commit-reveal scheme
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- Add minimum block delay for trade execution
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- Implement trade batching
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- Add maximum price deviation protection
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- Consider MEV-resistant design patterns
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**Testing:**
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- Front-running simulation tests
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- Commit-reveal tests
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- Trade batching tests
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#### 5. Emergency Withdraw Without Timelock in AIServiceAMM.sol
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**Finding ID:** SC-H-05
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**Component:** contracts/contracts/AIServiceAMM.sol
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**Status:** Open
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**Description:**
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Emergency withdraw functions lack time delays, allowing immediate fund extraction.
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**Required Changes:**
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- Add time delay (e.g., 48 hours) for emergency withdraw
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- Implement governance approval requirement
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- Add notification system for pending emergency actions
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- Implement multi-signature requirement
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- Add cancel mechanism for pending emergency actions
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**Testing:**
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- Time delay tests
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- Governance approval tests
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- Multi-sig tests
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### Medium Severity (3 findings)
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#### 6. Oracle Single Point of Failure in EscrowService.sol
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**Finding ID:** SC-M-01
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**Component:** contracts/contracts/EscrowService.sol
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**Status:** Open
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**Description:**
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Conditional release mechanism relies on single oracle verification (line 437).
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**Required Changes:**
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- Implement multi-oracle verification with threshold (e.g., 2/3)
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- Add oracle reputation system
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- Implement dispute resolution for oracle decisions
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- Add time delay after oracle verification before release
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- Consider decentralized oracle network integration
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**Testing:**
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- Multi-oracle threshold tests
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- Dispute resolution tests
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- Time delay tests
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#### 7. No Minimum Voting Threshold for Emergency Release in EscrowService.sol
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**Finding ID:** SC-M-02
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**Component:** contracts/contracts/EscrowService.sol
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**Status:** Open
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**Description:**
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Emergency release voting only requires 3 total votes and simple majority (line 612).
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**Required Changes:**
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- Implement percentage-based threshold (e.g., 66% of total arbiters)
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- Add minimum quorum requirement based on escrow amount
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- Implement arbiter staking to prevent sybil attacks
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- Add voting weight based on arbiter reputation
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- Implement time lock after approval before execution
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**Testing:**
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- Threshold calculation tests
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- Quorum requirement tests
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- Arbiter staking tests
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#### 8. No Rate Limiting on Staking Operations in AgentStaking.sol
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**Finding ID:** SC-M-03
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**Component:** contracts/contracts/AgentStaking.sol
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**Status:** Open
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**Description:**
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Staking contract has no rate limiting on operations.
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**Required Changes:**
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- Add rate limiting on stake creation (e.g., max 10 stakes/day)
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- Implement minimum stake amounts
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- Add maximum number of stakes per user
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- Implement gas optimization for batch operations
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- Add cooldown periods between operations
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**Testing:**
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- Rate limiting tests
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- Minimum stake tests
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- Maximum stake count tests
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## Sprint Timeline
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### Week 1: Planning and Development
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- **Day 1-2:** Sprint planning, design review, test strategy
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- **Day 3-5:** Implement High severity findings (SC-H-01, SC-H-02)
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- **Day 6-7:** Unit testing for implemented fixes
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### Week 2: Development and Testing
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- **Day 8-10:** Implement remaining High severity findings (SC-H-03, SC-H-04, SC-H-05)
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- **Day 11-12:** Implement Medium severity findings (SC-M-01, SC-M-02, SC-M-03)
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- **Day 13-14:** Integration testing
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### Week 3: Review and Deployment
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- **Day 15-16:** Code review, security review
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- **Day 17-18:** Audit preparation, documentation
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- **Day 19-20:** Deployment to testnet, final testing
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## Migration Strategy
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### For Existing Deployments
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**Option A: Contract Upgrade via Proxy**
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- Deploy new implementation contracts
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- Update proxy to point to new implementation
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- Migrate state if necessary
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- Requires governance approval
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**Option B: New Deployment**
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- Deploy new contracts
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- Migrate users/stakes to new contracts
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- Deprecate old contracts
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- More complex but cleaner
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**Recommended:** Option A for minimal disruption
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### Testing Strategy
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1. **Unit Tests**
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- Test each fix individually
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- Test edge cases and boundary conditions
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- Test failure modes
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2. **Integration Tests**
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- Test contract interactions
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- Test governance flows
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- Test upgrade mechanisms
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3. **Security Tests**
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- Re-run security scanning on new code
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- Manual security review
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- Third-party audit (if budget allows)
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4. **Performance Tests**
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- Gas cost analysis
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- Benchmark critical operations
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- Optimize if necessary
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## Risk Assessment
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### High Risks
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- **Contract upgrade failure:** Mitigate with thorough testing and rollback plan
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- **State migration issues:** Mitigate with comprehensive migration tests
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- **Governance approval delays:** Plan timeline accordingly
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### Medium Risks
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- **Gas cost increases:** Optimize critical paths
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- **User confusion during migration:** Clear communication and documentation
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- **Testing timeline overrun:** Buffer time in schedule
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## Success Criteria
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- All 8 findings resolved and tested
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- Unit test coverage > 90% for modified contracts
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- Integration tests passing
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- Security review completed
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- Migration to testnet successful
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- Documentation updated
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- Governance approval obtained
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## Deliverables
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1. **Code Changes**
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- Modified smart contracts
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- Migration scripts (if needed)
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- Upgrade contracts (if using proxy pattern)
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2. **Documentation**
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- Updated contract documentation
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- Migration guide
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- API changes documentation
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- Security review report
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3. **Testing**
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- Unit test suite
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- Integration test suite
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- Test results report
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4. **Deployment**
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- Testnet deployment
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- Mainnet deployment plan
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- Rollback plan
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## Related Files
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**Smart Contracts:**
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- `contracts/contracts/AgentStaking.sol`
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- `contracts/contracts/AIServiceAMM.sol`
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- `contracts/contracts/EscrowService.sol`
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- `contracts/contracts/AIToken.sol`
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**Documentation:**
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- `docs/security/audit-findings.md` - Original findings
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- `docs/security/remediation-plan.md` - Overall remediation plan
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- `contracts/docs/` - Contract documentation
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**CI/CD:**
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- `.gitea/workflows/smart-contract-tests.yml` - Contract testing workflow
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- `contracts/deployments-aitbc-cascade.json` - Deployment configuration
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## Verification Checklist
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- [ ] Sprint planning completed
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- [ ] Design review completed
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- [ ] All 8 findings implemented
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- [ ] Unit tests written and passing
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- [ ] Integration tests written and passing
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- [ ] Security review completed
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- [ ] Gas cost analysis completed
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- [ ] Migration strategy defined
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- [ ] Testnet deployment successful
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- [ ] Mainnet deployment plan approved
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- [ ] Documentation updated
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- [ ] Governance approval obtained
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