The core risk of Disperse bulk transfers centers on the "approval" step. It uses a two-step process: first approve, then disperse. Many first-time users get stuck at "clicked send but nothing happened." The reason is usually that only the first step was completed, or the list format was wrong, causing the second transaction to roll back on-chain.
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The List: Format Must Be Strictly Aligned
Disperse accepts two input methods: pasting an address list directly, or uploading a CSV file. Either way, the number of lines for addresses and amounts must match one-to-one.
If you use a CSV file, the standard format is two columns: the first column is the recipient address, and the second column is the amount. For example:
0x8F9E...7391,0.1 0x7B24...e21C,0.5
Do not include a header row, and avoid extra spaces or blank lines. If the number of pasted addresses does not match the number of amounts, the Disperse contract will revert directly when executing on-chain. The transaction fails, but gas is still charged. First do a small test with 2-3 addresses to confirm the list is parsed correctly before doing a large batch. This is the most direct way to avoid losses.
Approval: One Extra Step for ERC-20 Tokens
When transferring native coins such as ETH or BNB, you only need to confirm one transaction in your wallet. But for ERC-20 tokens, the process has one more step.
Disperse's disperseToken function uses transferFrom logic: it first needs to "pull" tokens from your wallet to the contract, then distribute them to recipients. This means you must first perform an approve operation on the token contract for the Disperse contract, authorizing it to use the specified amount of your tokens.
In practice, the Disperse web interface usually guides you through two steps in order: first click Approve. Your wallet will pop up a transaction confirmation, and you pay a gas fee to complete the authorization. After the approval succeeds, the Disperse button becomes clickable. You then confirm the second transaction to complete the distribution. Clicking only Approve will not transfer funds. You must complete the second step.
The approval amount is usually your total transfer amount. If you are unsure, you can authorize a slightly larger amount to avoid repeated approvals for later additions. However, the larger the approved amount, the greater the theoretical risk exposure if the token contract is maliciously exploited. After completing the transfer, you can revoke the remaining allowance on the token contract's approval management page.
Arrival Verification: Check the Transfer Events in the Receipt
When a transaction shows "success" or "confirmed" in your wallet, it only means the transaction was packed on-chain. Whether it actually distributed money to everyone on your list requires checking the transaction's Internal Transactions or Event Logs.
Open the transaction on a block explorer such as Etherscan and switch to the Event Logs or Internal Txns tab. Each successful distribution will correspond to a Transfer event or an internal transfer record. Check whether the number of events matches the number of addresses on your list, and whether the receiving address and amount of each event are correct.
If the list is very long, manual checking is unrealistic. In that case, scroll to the bottom of the explorer page and look at the total number of entries in the Token Transfers or Internal Transactions list. If the count is less than the number on your list, it means some transfers failed inside the contract, but the overall transaction may still have succeeded because only some require checks were performed. This situation is rare, but it can happen when the list contains contract addresses or special tokens such as tokens with transfer taxes.
About Gas and Contract State
The Disperse contract is stateless and non-custodial. It does not hold funds itself. All operations are "pass-through" in nature: your money leaves your wallet, passes through the contract, and goes directly to the recipient. The contract has no owner permission that can take funds away, which reduces the risk of the tool itself.
When transferring native coins, there is one detail: if the msg.value you send is slightly more than the total amount on your list, the excess will be returned to your wallet. So you do not need to be precise down to the wei. Leave a little extra to avoid failure caused by calculation errors. But if you are calling the contract through your own script, you must manually include value in the transaction. Submitting only the list without attaching funds will cause the transaction to fail.
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