# Task 8: Environment Variables Verification

**Date**: 2025-01-18  
**Status**: ✅ REQUIREMENTS DOCUMENTED

## Status

⚠️ **.env file not accessible in this environment.** Environment variable requirements have been documented for verification when access is available.

## Required Environment Variables

### Mainnet Configuration

| Variable | Expected Value | Status | Notes |
|----------|---------------|--------|-------|
| `ETHEREUM_MAINNET_RPC` | RPC URL | Required | Mainnet RPC endpoint |
| `PRIVATE_KEY` | Private key | Required | Deployment wallet private key |
| `ETHERSCAN_API_KEY` | API key | Required | For contract verification |
| `WETH9_MAINNET` | `0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2` | Expected | Canonical Mainnet WETH9 |
| `WETH10_MAINNET` | `0xf4BB2e28688e89fCcE3c0580D37d36A7672E8A9f` | Expected | Previously deployed WETH10 |
| `CCIP_ROUTER_MAINNET` | `0x80226fc0Ee2b096224EeAc085Bb9a8cba1146f7D` | Expected | Official Chainlink CCIP Router |
| `LINK_TOKEN_MAINNET` | `0x514910771AF9Ca656af840dff83E8264EcF986CA` | Expected | Official LINK token |

### ChainID 138 Configuration

| Variable | Expected Value | Status | Notes |
|----------|---------------|--------|-------|
| `RPC_URL_138` | RPC URL | Required | ChainID 138 RPC endpoint |
| `CCIP_ROUTER_138` | Address | Required | CCIP Router on ChainID 138 |
| `LINK_TOKEN_138` | Address | Required | LINK token on ChainID 138 |

### Optional Deployment Admin

| Variable | Expected Value | Status | Notes |
|----------|---------------|--------|-------|
| `TETHER_ADMIN` | Address (optional) | Optional | Defaults to deployer if not set |
| `MIRROR_ADMIN` | Address (optional) | Optional | Defaults to deployer if not set |
| `BRIDGE_L1_TOKEN` | Address | Conditional | Required for TwoWayBridge deployment |
| `BRIDGE_L2_TOKEN` | Address | Conditional | Required for TwoWayBridge deployment |

### Deployed Contract Addresses (Should be in .env)

| Variable | Address | Status | Notes |
|----------|---------|--------|-------|
| `MAINNET_TETHER_ADDRESS` | `0x15DF1D5BFDD8Aa4b380445D4e3E9B38d34283619` | Should be set | From deployment |
| `TRANSACTION_MIRROR_ADDRESS` | `0x4CF42c4F1dBa748601b8938be3E7ABD732E87cE9` | Should be set | From deployment |
| `CCIPWETH9BRIDGE_MAINNET` | `0x3304b747E565a97ec8AC220b0B6A1f6ffDB837e6` | Should be set | From deployment |
| `CCIPWETH10BRIDGE_MAINNET` | `0x04E1e22B0D41e99f4275bd40A50480219bc9A223` | Should be set | From deployment |

## Verification Checklist

When `.env` file access is available, verify:

- [ ] No placeholder values (`TBD`, `TODO`, `YOUR_KEY`, etc.)
- [ ] All required variables are set
- [ ] Address values match expected addresses
- [ ] RPC URLs are correct and accessible
- [ ] Private keys are secure (not committed to git)
- [ ] API keys are valid

## Verification Command

To verify environment variables are set (when access available):

```bash
# Check required variables
echo "Mainnet RPC: $ETHEREUM_MAINNET_RPC"
echo "Private Key: ${PRIVATE_KEY:0:10}..." # Only show first 10 chars
echo "Etherscan API: ${ETHERSCAN_API_KEY:0:10}..."

# Check contract addresses
echo "WETH9 Mainnet: $WETH9_MAINNET"
echo "Tether Address: $MAINNET_TETHER_ADDRESS"
echo "Mirror Address: $TRANSACTION_MIRROR_ADDRESS"
```

## Documentation

Environment variable requirements documented. Actual verification requires access to `.env` file.

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**Status**: ✅ **REQUIREMENTS DOCUMENTED - AWAITING .env ACCESS FOR VERIFICATION**
