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Krypto Kajun 52d555ccdf fix(critical): complete execution pipeline - all blockers fixed and operational

2025-11-04 10:24:34 -06:00

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Smart Contract Verification Report

Generated: 2025-11-01 Purpose: Verify all deployed MEV bot contracts on Arbiscan Network: Arbitrum One (Chain ID: 42161)

Deployed Contracts Requiring Verification

Core Execution Contracts

1. Arbitrage Executor

Address: 0x6C2B1c6Eb0e5aB73d8C60944c74A62bfE629c418
Contract: ProductionArbitrageExecutor.sol
Purpose: Main arbitrage execution logic with flash swap support
Status: ⏳ Pending Verification
Verification Command:

export ARBISCAN_API_KEY="your_key_here"
./scripts/verify-contracts.sh 0x6C2B1c6Eb0e5aB73d8C60944c74A62bfE629c418 ProductionArbitrageExecutor

2. Uniswap V3 Flash Swapper

Address: 0x7Cc97259cBe0D02Cd0b8A80c2E1f79C7265808b4
Contract: Uniswap V3 flash swap implementation
Purpose: Execute flash swaps on Uniswap V3 pools
Status: ⏳ Pending Verification

3. Data Fetcher Contract

Address: 0xC6BD82306943c0F3104296a46113ca0863723cBD
Contract: Batch pool data fetcher
Purpose: 99% RPC call reduction through batch queries
Status: ⏳ Pending Verification

4. Uniswap V2 Flash Swapper

Address: 0xE82c24b3fD47995E0626b1e8ac13E13130f5AeEE
Contract: Uniswap V2 flash swap implementation
Purpose: Execute flash swaps on Uniswap V2 pools
Status: ⏳ Pending Verification

5. Legacy Flash Swapper

Address: 0x5801ee5c2f6069e0f11cce7c0f27c2ef88e79a95
Contract: Legacy flash swapper (points to V3)
Purpose: Backward compatibility
Status: ⏳ Pending Verification

6. Flash Loan Receiver

Address: 0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512
Contract: FlashLoanReceiver.sol
Purpose: Balancer flash loan receiver (0% fee)
Status: ⏳ Pending Verification

Verification Prerequisites

1. Arbiscan API Key

Get your API key from: https://arbiscan.io/myapikey

export ARBISCAN_API_KEY="YourApiKeyHere"

2. Compiler Settings

All contracts deployed with:

Compiler Version: v0.8.19+commit.7dd6d404
Optimization: Enabled (200 runs)
EVM Version: Default

3. Constructor Arguments

Document constructor arguments used for each deployment.

Verification Process

Automated Verification Script

Use the provided script for each contract:

# Verify Arbitrage Executor
./scripts/verify-contracts.sh 0x6C2B1c6Eb0e5aB73d8C60944c74A62bfE629c418 ProductionArbitrageExecutor

# Verify Flash Loan Receiver
./scripts/verify-contracts.sh 0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512 FlashLoanReceiver

Manual Verification via Forge

Alternative using Forge directly:

forge verify-contract \
    --chain-id 42161 \
    --num-of-optimizations 200 \
    --watch \
    --compiler-version "v0.8.19+commit.7dd6d404" \
    --etherscan-api-key "$ARBISCAN_API_KEY" \
    "0x6C2B1c6Eb0e5aB73d8C60944c74A62bfE629c418" \
    "contracts/ProductionArbitrageExecutor.sol:ProductionArbitrageExecutor"

Security Considerations

Contract Audit Status

✅ ReentrancyGuard: Implemented on all critical functions
✅ AccessControl: Role-based permissions (ADMIN, EXECUTOR, EMERGENCY)
✅ Pausable: Emergency stop functionality
✅ SafeERC20: Used for all token transfers
✅ Slippage Protection: Max 5% slippage (500 basis points)
✅ Pool Authorization: Whitelist system for flash loan pools
✅ Gas Price Limits: Maximum gas price enforcement
✅ Profit Thresholds: Minimum profit validation

Known Vulnerabilities (From Logic Audit)

⚠️ Note: The following vulnerabilities are in the Go backend code, not the smart contracts:

DFS path building bug (Go code)
Cache poisoning (Go code)
Slippage formula error (Go code)
Gas price race condition (Go code)
Float-to-int precision loss (Go code)
Handler concurrency issues (Go code)

Smart contracts appear secure based on code review. Issues are in the backend orchestration layer.

Post-Verification Checklist

All contracts verified on Arbiscan
Contract source code matches deployed bytecode
Constructor arguments documented
ABI exported and stored in bindings/deployed/
Contract addresses updated in all configs
Security audit report updated
Read/write functions tested via Arbiscan interface

Verification Status Tracking

Contract	Address	Status	Verification Link	Date
ArbitrageExecutor	`0x6C2B1c6...`	⏳ Pending	-	-
UniswapV3FlashSwapper	`0x7Cc9725...`	⏳ Pending	-	-
DataFetcher	`0xC6BD823...`	⏳ Pending	-	-
UniswapV2FlashSwapper	`0xE82c24b...`	⏳ Pending	-	-
LegacyFlashSwapper	`0x5801ee5...`	⏳ Pending	-	-
FlashLoanReceiver	`0xe7f1725...`	⏳ Pending	-	-

Next Steps

Obtain Arbiscan API key from https://arbiscan.io/myapikey

Export API key:

export ARBISCAN_API_KEY="your_key_here"

Run verification script for each contract
Document verification links in the table above
Update status as verifications complete
Test contract interactions via Arbiscan UI

Contract Interaction Examples

Via Arbiscan (After Verification)

Check Authorization:

// Read function: authorizedPools(address)
authorizedPools(0xPoolAddress) → returns bool

Execute Arbitrage:

// Write function: executeArbitrage(address pool, bytes params)
// Requires EXECUTOR_ROLE

Withdraw Profits:

// Write function: withdrawProfits(address token, uint256 amount)
// Requires ADMIN_ROLE

Contact & Support

Arbiscan Support: https://arbiscan.io/contactus
Verification Docs: https://docs.arbiscan.io/getting-started/verifying-contracts

Report Status: In Progress Last Updated: 2025-11-01

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