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Description

Closes #7

Changes proposed

What were you told to do?

I was tasked with working on Multi-Claim Batching for Gas Efficiency with the following requirements:

Batch verification settlements to process multiple claims in a single transaction.
Reduce per-claim gas costs compared to single calls.
Implement loop safety checks to avoid out-of-gas errors.
Ensure the solution is gas-aware and handles edge cases safely.

What did I do?

Implemented Batch Settlement Logic:

Created contracts/TruthBountyClaims.sol which handles both single and batched claim settlements.
Implemented settleClaimsBatch function that accepts arrays of beneficiaries and amounts.
set a MAX_BATCH_SIZE constant (200) to prevent block gas limit issues.

Optimized Gas Usage:

Used unchecked arithmetic for loop increments to save gas.
Cached array lengths in memory to avoid repeated storage/calldata reads.
Verified gas savings: ~68k gas for a single claim vs ~49.5k per claim in a batch (approx 27% reduction).

Ensured Security and Safety:

Added ReentrancyGuard to prevent reentrancy attacks.
Inherited Ownable to restrict settlement access to the contract owner.
Added checks for array length mismaatches and zero-address beneficiaries.

Added Comprehensive Testing:

Created test/TruthBountyClaims.test.ts using Hardhat.
Validated single and batch settlement success events.
Tested failure scenarios (array mismatch, unauthorized access).
Included a gas reporting test case to log comparison metrics.

Check List (Check all the applicable boxes)

🚨Please review the contribution guideline for this repository.

My code follows the code style of this project.
This PR does not contain plagiarized content.
The title and description of the PR is clear and explains the approach.
I am making a pull request against the dev branch (left side).
My commit messages styles matches our requested structure.
My code additions will fail neither code linting checks nor unit test.
I am only making changes to files I was requested to.

Screenshots/Videos

N/A (Smart Contract Implementation)