aitbc/docs/security/third-party-audit-scope.md

Third-Party Security Audit Scope

Document Version: 1.0
Date: 2026-05-11
Status: Ready for Audit Firm Review

Executive Summary

The AITBC platform has completed an internal security audit identifying 20 security findings across Critical, High, and Medium severity levels. This document defines the scope for third-party security audit, including completed remediations and pending smart contract security sprint.

Total Findings: 20 (3 Critical, 10 High, 7 Medium)
Completed Remediations: 8 findings (3 Critical, 5 High)
Pending Remediations: 12 findings (5 High, 7 Medium) - deferred to smart contract security sprint

Audit Objectives

1. Verify completed remediations - Validate that 8 completed findings are properly resolved
2. Audit smart contract security sprint - Review planned remediations for 8 deferred findings
3. Identify additional vulnerabilities - Comprehensive security assessment beyond known findings
4. Provide security recommendations - Best practices and architectural improvements

Audit Scope

Phase 1: Completed Remediations Verification

Components to Audit

1. Circom Circuits (3 findings resolved)

• apps/zk-circuits/receipt.circom
• apps/zk-circuits/ml_training_verification.circom
• apps/zk-circuits/ml_inference_verification.circom
• apps/zk-circuits/modular_ml_components.circom

Remediations to Verify:

• ECDSA verification bypass mitigation (moved to API layer)
• Learning rate constraint fixes (proper comparison circuits)
• Verification logic fixes (IsZero circuit implementation)
• Learning rate validation re-implementation

Test Cases:

• Compile all modified circuits
• Verify constraint correctness
• Test with valid and invalid inputs
• Verify circuit soundness

2. ZK Proof Implementation (5 findings resolved/mitigated)

• apps/coordinator-api/src/app/services/zk_proofs.py
• apps/coordinator-api/src/app/services/zk_memory_verification.py
• apps/coordinator-api/src/app/routers/zk_applications.py

Remediations to Verify:

• Mock ZK proof verification replaced with actual Groth16 verification
• Mock proof generation disabled by default (enabled flag)
• Demo endpoints disabled by default (DEMO_MODE_ENABLED flag)
• Weak validation replaced with proper error handling
• Security warnings added for placeholder implementations

Test Cases:

• Test Groth16 verification with valid proofs
• Test disabled services return 503 errors
• Test enabled flag behavior
• Verify security warnings are logged
• Test input validation

3. Smart Contract - AIToken.sol (1 finding resolved)

• contracts/contracts/AIToken.sol

Remediations to Verify:

• MAX_SUPPLY constant (1 billion tokens)
• MINTING_COOLDOWN (1 day)
• Constructor validation (initial supply ≤ MAX_SUPPLY)
• Mint validation (totalSupply + amount ≤ MAX_SUPPLY)
• Mint validation (cooldown period elapsed)

Test Cases:

• Test minting respects supply cap
• Test minting cooldown enforcement
• Test constructor rejects invalid initial supply
• Test mint after cooldown succeeds
• Test mint before cooldown fails

Phase 2: Smart Contract Security Sprint Audit

Components to Audit

1. AgentStaking.sol (3 findings pending)

• contracts/contracts/AgentStaking.sol

Pending Remediations to Review:

• SC-H-01: Slashing mechanism implementation
• SC-H-02: Oracle manipulation protection
• SC-M-03: Rate limiting on staking operations

Audit Focus:

• Slashing logic correctness
• Oracle authorization and signature verification
• Rate limiting implementation
• Economic incentive alignment
• Governance mechanisms

Test Cases:

• Slashing condition tests
• Oracle authorization tests
• Rate limiting tests
• Governance approval tests
• Edge case scenarios

2. AIServiceAMM.sol (2 findings pending)

• contracts/contracts/AIServiceAMM.sol

Pending Remediations to Review:

• SC-H-03: Flash loan attack protection (TWAP)
• SC-H-04: Front-running protection
• SC-H-05: Emergency withdraw timelock

Audit Focus:

• TWAP implementation correctness
• Flash loan detection mechanism
• Front-running mitigation (commit-reveal)
• Emergency withdraw timelock
• Circuit breaker implementation
• MEV resistance

Test Cases:

• Flash loan simulation
• Price manipulation tests
• Front-running simulation
• Commit-reveal tests
• Emergency withdraw delay tests
• Circuit breaker tests

3. EscrowService.sol (2 findings pending)

• contracts/contracts/EscrowService.sol

Pending Remediations to Review:

• SC-M-01: Multi-oracle verification
• SC-M-02: Minimum voting threshold

Audit Focus:

• Multi-oracle threshold implementation
• Oracle reputation system
• Dispute resolution mechanism
• Voting threshold calculation
• Arbiter staking mechanism
• Sybil attack prevention

Test Cases:

• Multi-oracle threshold tests
• Dispute resolution tests
• Voting threshold tests
• Arbiter staking tests
• Sybil attack simulation

Phase 3: Comprehensive Security Assessment

Additional Components to Review

1. Blockchain Node

• apps/blockchain-node/src/aitbc_chain/
• State management
• Consensus mechanism
• Transaction processing
• P2P network security

2. Coordinator API

• apps/coordinator-api/src/app/
• Authentication and authorization
• API endpoint security
• Rate limiting
• Input validation
• Error handling

3. Wallet Daemon

• apps/wallet/src/app/
• Private key management
• Transaction signing
• Secure storage
• Key derivation

4. Additional Smart Contracts

• contracts/contracts/ (all contracts not in scope above)
• Gas optimization
• Reentrancy protection
• Access control
• Upgradeability patterns

Audit Deliverables

1. Audit Report

• Executive summary
• Detailed findings with severity classification
• Code references for each finding
• Remediation recommendations
• Risk assessment

2. Test Results

• Test case documentation
• Test execution results
• Coverage metrics
• Performance benchmarks

3. Security Recommendations

• Architecture improvements
• Best practices
• Additional security measures
• Monitoring and alerting recommendations

4. Re-audit Plan

• Scope for re-audit after remediation
• Verification checklist
• Success criteria

Audit Methodology

1. Static Analysis

• Automated code scanning (Slither, MythX, etc.)
• Manual code review
• Pattern matching for common vulnerabilities

2. Dynamic Analysis

• Fuzzing
• Penetration testing
• Stress testing
• Performance testing

3. Formal Verification (if applicable)

• Smart contract formal verification
• Circuit correctness proofs
• Security property verification

4. Threat Modeling

• Identify attack vectors
• Assess impact of potential attacks
• Validate mitigations

Audit Timeline

Estimated Duration: 4-6 weeks

• Week 1: Initial review, static analysis, threat modeling
• Week 2: Dynamic analysis, penetration testing
• Week 3: Smart contract deep dive, formal verification
• Week 4: Report preparation, recommendations
• Week 5: Review and revisions
• Week 6: Final report delivery

Access Requirements

Code Access

• Read access to all repositories
• Access to git history
• Access to CI/CD pipelines

Documentation Access

• Architecture documentation
• API documentation
• Deployment documentation
• Security documentation

Testing Environment

• Access to testnet deployment
• Test accounts with tokens
• Access to monitoring tools

Communication

Primary Contact: [To be designated]
Weekly Status Calls: Yes
Ad-hoc Questions: Yes
Progress Updates: Weekly

Success Criteria

1. Coverage: All components in scope audited
2. Findings: All findings documented with severity
3. Recommendations: Actionable remediation steps provided
4. Timeline: Audit completed within estimated duration
5. Quality: Audit report meets industry standards

Exclusions

Out of Scope

• Infrastructure security (AWS/GCP configuration)
• Network security (firewall rules, VPN)
• Physical security
• Social engineering
• Third-party dependencies (unless critical)
• Operational procedures

Limitations

• Audit based on code at time of audit
• No guarantee against future vulnerabilities
• Limited to provided scope
• No penetration testing of production environment

Appendix

A. Completed Remediations Summary

Finding ID	Component	Severity	Status	Remediation
C-01	receipt.circom	Critical	Mitigated	ECDSA verification moved to API
C-02	zk_proofs.py	Critical	Resolved	Actual Groth16 verification
C-03	AIToken.sol	Critical	Resolved	Supply cap + cooldown
H-01	ml_training_verification.circom	High	Resolved	Proper comparison circuits
H-02	ml_inference_verification.circom	High	Resolved	IsZero circuit
H-03	modular_ml_components.circom	High	Resolved	Re-implemented validation
H-04	zk_memory_verification.py	High	Mitigated	Disabled by default
H-05	zk_applications.py	High	Resolved	Demo endpoints disabled

B. Pending Remediations Summary

Finding ID	Component	Severity	Sprint ID	Status
SC-H-01	AgentStaking.sol	High	SC-H-01	Pending
SC-H-02	AgentStaking.sol	High	SC-H-02	Pending
SC-H-03	AIServiceAMM.sol	High	SC-H-03	Pending
SC-H-04	AIServiceAMM.sol	High	SC-H-04	Pending
SC-H-05	AIServiceAMM.sol	High	SC-H-05	Pending
SC-M-01	EscrowService.sol	Medium	SC-M-01	Pending
SC-M-02	EscrowService.sol	Medium	SC-M-02	Pending
SC-M-03	AgentStaking.sol	Medium	SC-M-03	Pending

C. Related Documents

• docs/security/audit-findings.md - Detailed security findings
• docs/security/threat-model.md - Threat model
• docs/security/economic-analysis.md - Economic security analysis
• docs/security/remediation-plan.md - Remediation plan
• .windsurf/plans/smart-contract-security-sprint.md - Smart contract sprint plan
• .windsurf/plans/security-audit-plan.md - Security audit workflow

D. Contact Information

Project Team:

• [To be designated] - Project Lead
• [To be designated] - Smart Contract Developer
• [To be designated] - Security Engineer

Audit Firm:

• [To be designated] - Lead Auditor
• [To be designated] - Audit Team