OP Stack L3 Payroll Batch Sender

WHAT IT DOES

This tool enables companies, DAOs, and organizations to process payroll for employees in a single batched transaction on OP Stack L3 chains. Instead of sending 50 individual transactions and paying gas 50 times, you paste a list of employee addresses and payroll amounts, and the BotGentz bulk-sender contract distributes everything in one go. It supports ERC-20 tokens, ERC-721 NFTs, and ERC-1155 multi-tokens, plus native ETH through the same interface. The tool reads on-chain balances, verifies that your wallet holds enough of each asset to cover the total payroll plus the contract's fee, and checks your transaction history to flag duplicates. It displays the contract's live fee, owner, and address before you sign anything so you know exactly what you are approving. This is designed specifically for payroll processing on OP Stack L3 chains—covering employee salaries, contractor payments, and regular payroll runs—but it works for any bulk payment need. OP Stack's modular architecture and low fees make this tool ideal for organizations with large payrolls, enabling cost-effective batch processing that would be prohibitive on L1.

HOW TO USE

Connect your EVM wallet via the BotGentz bridge. The tool automatically detects the connected OP Stack L3 chain and looks up the correct bulk-sender contract from the BotGentz registry. Enter the token contract address, choose the token type (ERC-20, ERC-721, or ERC-1155), and paste your employee list as one address and payroll amount per line. Optionally include employee IDs for your records. Click "Parse list" to validate addresses and preview the total payroll. The review panel shows the number of employees, total payroll, token address, and the contract fee in native ETH. When you click "Send batch," the tool performs a balance check per sender, not per row, ensuring the entire batch can complete before the first transfer. It then approves the sender contract for the exact total amount, not unlimited, and sends the batched transaction. Progress is shown throughout, including transaction confirmation. All state is in-memory and lost on reload—no data is stored. The tool handles regular payroll cycles, bonus payments, and one-off payroll runs with ease on OP Stack's efficient L3 infrastructure.

BULK SENDER CONTRACT MECHANISM

Unlike claim-based airdrops where each recipient pays their own gas to withdraw, this is a true bulk-send tool: the sender pays once for the entire batch. The BotGentz registry provides per-chain, per-standard contract addresses. The tool reads the fee() and owner() methods live from the contract each time—never hardcoding fees because the owner can change them. It uses the contract's sendERC20, sendERC721, and sendERC1155 methods, passing the recipient arrays, amounts or token IDs, and the required fee as msg.value. The fee covers the contract's operational costs and is separate from network gas. The tool checks balances comprehensively: native ETH balance must cover the fee, and ERC-20 balance must cover the total payroll. It walks through approvals sequentially and awaits each transaction, avoiding nonce conflicts that would occur if sends were fired concurrently. Post-EIP-1559, it uses receipt.effectiveGasPrice for accurate cost reporting rather than tx.gasPrice. For chains with different log limits, it chunks reads appropriately, halving ranges on failure. The contract owner is shown so you can verify the deployer before signing. The tool also reads token decimals dynamically and supports multi-token payroll where different employees receive different assets. The batch size is limited only by block gas limits, suitable for organizations with hundreds of employees on OP Stack's scalable infrastructure.

WHAT IT CANNOT SEE

This tool cannot verify off-chain employee work hours, attendance, or payroll eligibility. It cannot prove that recipient addresses are correct, that employees are legitimate, or that the same person is not receiving multiple paychecks via different identities. It cannot detect Sybil attacks or duplicate employee identities. It cannot access private employee payment preferences, payroll policies, or HR data. It cannot recover funds sent to wrong addresses—the blockchain is final. It cannot see past the current block, and it cannot enforce business rules beyond what is expressed in the payroll list. It does not store any data; all state is in-memory and lost on reload. It cannot verify that employees are currently employed, that they worked the required hours, or that they are eligible for payment based on company policy. It cannot automatically import timesheet data from HR systems or calculate payroll based on hourly rates and attendance. It cannot handle multi-currency payments, tax withholdings, or country-specific compliance requirements beyond what you manually enter. It cannot verify that employees have valid tax IDs, that they are not on sanctions lists, or that the payment complies with applicable labor laws. It cannot enforce approval workflows, payroll caps, or payout schedules beyond what you manually enter. It cannot verify that payroll calculations were performed correctly or that benefits and deductions were properly accounted for. It cannot handle disputes, reversals, or clawback provisions.

PLEASE NOTE

This tool works on OP Stack L3 chains with the BotGentz bulk-sender contract deployed. Other EVM chains like Ethereum L1, Optimism, Arbitrum, Base, Polygon, and others are supported by sibling tools—this specific tool is optimized for OP Stack L3. Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, and XRP are not supported. Always double-check the contract address displayed in the tool against the official BotGentz registry before sending. The tool is free and open-source; the contract fee is set by the owner and displayed live. Use at your own risk—you are responsible for verifying all addresses, payroll amounts, and employee eligibility before signing any transaction. For organizations with regular payroll cycles, consider implementing a formal approval process, using a multi-signature wallet, and consulting with legal and tax advisors to ensure compliance with applicable regulations. OP Stack L3's low transaction fees and modular architecture make this tool particularly attractive for organizations with large employee bases requiring frequent payroll processing.