Binance BSC Smart Chain Token Creation Guide: USDT Batch Aggregation Contract Deployment, Configuration & Testing

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Introduction

This contract facilitates the aggregation of USDT from multiple sub-contract addresses to a central collection address.

Key Features

  1. Targeted Batch Collection:

    • Collect specified amounts of USDT from selected sub-contract addresses via batchColl.

  2. Full Auto-Collection:

    • Aggregate all USDT from all sub-contract addresses using batchCollAll.

  3. Cross-Chain Compatibility:

    • Works with all ERC20-compliant blockchains. TRC20 support requires minor address conversions.

  4. No Signature Verification Needed:

    • The contract and collectors are pre-authorized, eliminating the need for external approvals.

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Important Notes

  1. Sub-Contract Requirements:

    • Only addresses created via createCollector are eligible for aggregation.

  2. Pre-Authorized Collectors:

    • Each sub-contract grants infinite USDT approval to the main aggregation contract.

  3. Gas Limits:

    • Set gas=500,000 for optimal performance (handles 5–8 transactions per batch).

Contract Deployment & Open-Sourcing

Compiler Settings

Steps

  1. Deploy via Single File Open-Source method.
  2. Verify on BscScan.

Code Snippets

function isCollector(address addr) public view returns(bool) {
  require(addr != address(0), "Invalid address");
  return collectors[collectorIndex[addr]] == addr;
}

function batchColl(uint256 gas, address[] calldata addresses, uint256[] calldata amounts) external returns (bool) {
  _batchColl(gas, addresses, amounts);
  return true;
}

FAQs

Q1: Can I modify this contract for TRC20 USDT?
A1: Yes—adjust ERC20/TRC20 interface addresses in the code.

Q2: How do I estimate gas costs for large batches?
A2: Test with 5–10 transactions first; scale incrementally.

Q3: Are there security risks with auto-collection?
A3: No—only owner-authorized addresses can trigger aggregation.

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Resources

Disclaimer: This guide is for educational purposes only. Always audit contracts before deployment.


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