# Contract Review Fixes Applied

**Date**: 2025-12-11
**Status**: Fixes Applied

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## ✅ Fixes Applied

### TransactionMirror.sol

1. **✅ Added Batch Size Limit**
   - Added `MAX_BATCH_SIZE = 100` constant
   - Added validation: `require(txHashes.length <= MAX_BATCH_SIZE, "batch too large")`
   - **Reason**: Prevents gas limit issues with large batches

2. **✅ Added Empty Batch Check**
   - Added validation: `require(txHashes.length > 0, "empty batch")`
   - **Reason**: Prevents wasteful empty batch calls

3. **✅ Simplified Block Range Calculation**
   - Removed unnecessary length checks (already validated above)
   - **Reason**: Code simplification

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## 📋 Remaining Recommendations (Optional)

### Medium Priority (Optional)
- [ ] Add timestamp validation (prevent future/very old timestamps)
- [ ] Add block number ordering validation (if sequential ordering required)

### Low Priority (Optional)
- [ ] Add query functions for filtered searches
- [ ] Add data size limits
- [ ] Add previous block hash to MainnetTether event

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## ✅ Deployment Status

**MainnetTether.sol**: ✅ Ready for deployment
**TransactionMirror.sol**: ✅ Ready for deployment (fixes applied)

Both contracts are now ready for Foundry deployment.

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**Last Updated**: 2025-12-11

