World Chain
Learn about World Chain, network fees, and the basics of crypto.
Network
What is World Chain and why do I have to migrate to it?
What is the World Chain Network?
World Chain is a new blockchain designed for humans, built to scale the World protocol and the broader Ethereum community to 1 billion people and beyond.
Migrating to World Chain will result in these benefits:
- Free transfers in World Money for verified users
- Transactions will be completed at twice the speed of those on the Optimism network, ensuring faster and more efficient processing
World Chain is designed first and foremost to significantly increase capacity so new people can continue to join at scale, and existing users can enjoy faster, cheaper, and more reliable transactions.
How do I migrate World Money assets to World Chain?
From October 2024, World Money transactions will be taking place in the World Chain Network.
All World Money users will need to migrate their existing app assets (tokens) from the Optimism Network into the World Chain Network. World Money will prompt you to begin the migration process once it is ready.
To migrate to World Chain:
- Tap on Start migration
- The migration process will begin and should be done in minutes. Once it completes, you will see a confirmation screen, which will allow you to continue using the app as normal.
What will happen to transactions sent to me via the Optimism Network?
If you have already migrated to World Chain and someone sends you a transaction via the Optimism Network, World Money will show you the following screen so you can migrate those assets to your wallet:
Simply tap the Understand button to get the migration started. Your assets will appear in the wallet shortly.
To avoid losing funds, please make sure future transactions are done on the World Chain Network.
Disclaimer
*Eligibility for Worldcoin (WLD) tokens is restricted based on geography, age, and other factors. For details, go to: www.world.org/tos. Crypto products can be highly risky. Important User Information can be found at www.world.org/risks.
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.
How do I find a transaction on the World Chain Network?
If you need to locate a specific transaction on the World Chain network, you can do so by using a blockchain explorer such as the World Chain Explorer. Follow the instructions below to find your transaction.
Steps to Find a Transaction Using World Money
If you used World Money to make a transaction, you can easily locate its blockchain record by following these steps:
1. Open the History tab
2. Select the transaction type you want to see and tap Apply to find and open the specific transaction to see its details.
3. You'll be able to view all the relevant information regarding the transaction. Tap the Details on blockchain option to open the blockchain record in the World Chain Explorer
Note: Transaction ID and Transaction Hash are both different. For more information on what a Transaction ID is, please check our detailed guide here.
Steps to Find a Transaction Directly in the World Chain Explorer
1. Get the Transaction Hash (TxID) or Wallet Address
When you perform any transaction on the World Chain network, you’ll receive a unique transaction hash. You can usually find this in your wallet or the app where the transaction was made.
If you do not have the transaction hash, you can also use the sender’s or receiver’s wallet address.
2. Open World Chain Explorer
Go to the official World Chain Explorer which can be found through the following link: https://worldscan.org/
3. Enter the Transaction Hash or Wallet Address
Once on the explorer page, you'll see a search bar. Enter the transaction hash (TxID) or wallet address into the search bar and press Enter or tap on the magnifying glass to start the search.
4. Review the Transaction Details
The explorer will display detailed information about the transaction, including:
- Status
- Transaction value (Amount of tokens involved)
- Fees
- Timestamp of the transaction
- Sender and receiver wallet addresses
Example of a transaction record found in the blockchain explorer
Troubleshooting
Transaction Not Found
If the transaction doesn’t appear, double-check the transaction hash or address to ensure it is correct. It can sometimes take a few moments for new transactions to appear on the blockchain.
Pending Transactions
If your transaction is still pending, it may take time depending on network congestion. You can monitor its progress in the same explorer.
Transaction Shows Completed but Funds Have Not Been Received
Transactions marked as completed in World Money and/or on the blockchain may take some time to appear in the destination wallet or address. Please allow up to 48 hours and check again. If the funds have not arrived after this period, contact the destination wallet or centralized exchange’s support team for further assistance.
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.
Can I retrieve my funds that were sent out from my World Money to an external address?
Short answer: No, you cannot. Once a transaction is sent out of your World Money, you cannot undo the transaction.
In a decentralized blockchain network, transactions are verified, recorded, and then added to the blockchain. This is all done in order to maintain a transparent and tamper-proof record of all transactions. So once a transaction is confirmed, it can no longer be cancelled or reverted.
Wrong Address
If you sent funds to the wrong address, you'll have to contact the receiving party and request their cooperation in returning the funds. If you do not know the owner of the address, then there is nothing you or World can do to retrieve the funds. All addresses are anonymous on the blockchain.
When entering in the address to send funds to, make sure you properly copy and paste the correct address. It is highly recommended to copy and paste the address instead of manually inputting the address since it must be an exact match of your intended recipient's address.
You should also confirm that you are selecting the correct blockchain network (chain) before sending funds. Even if the address is correct, sending funds on the wrong network may result in permanent loss of funds.
Exchange Platform
If you sent a transaction to a platform (i.e., Binance), you may be able to reach out to the specific platform's support team and work with them in order to reverse your transaction or have the funds credited to your platform account.
Non-Custodial Wallet
If you sent a transaction to a non-custodial wallet, you will have to contact the receiver and request that they send back the funds on your own. If they own private keys of their non-custodial wallet, then they will be able to recover the funds.
As mentioned above, if you do not know the owner of the wallet address, then you will not be able to recover your funds.
Be careful of scams! Never allow others to handle your phone and do not send funds to people you do not fully trust. There has been a lot of reports of users getting scammed on WhatsApp. Due to the nature of cryptocurrency protocols, once a transaction is made, there is no way for our team to help recover lost funds.
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.
Crypto Basics
Why do I see a network fee for my transactions?
What are network fees?
A network fee is a small payment you make to process a transaction on a blockchain. It pays the network for the computing power needed to validate and complete your action (like sending tokens or interacting with a smart contract). You can learn more about network fees in this blog post: Understanding Crypto Costs: Transaction and Network Fees.
World Money normally covers network fees, so you can transact smoothly without worrying about extra costs. However, in some situations, the app may not be able to sponsor the fee. World may update or modify its fee sponsorship policies at any time.
When this happens, you’ll see the amount of WLD needed to continue. This process is called a self-sponsored transaction and helps ensure your transaction can still be completed without interruption.
This system is powered by ERC-4337 account abstraction and a third-party ERC-20 paymaster, which pays the network fee upfront and is reimbursed in WLD.
Why this happens
You may be asked to cover the network fee for a transaction when:
- Network activity is unusually high.
- Our daily limits for sponsored transactions have been reached.
In these cases, the app temporarily pauses sponsorship only for that transaction and switches to a backup flow.
What you’ll see in the App
When a network fee is required, the app will guide you clearly:
- A message will display the exact amount of WLD needed.
- You’ll see an option to accept and continue.
- Once confirmed, the transaction proceeds normally.
- No advance setup is needed — the app notifies you only when a fee is required.
How the Self-Sponsored Flow Works
- You start a transaction as usual.
- World checks whether it will sponsor the network fee.
- If not, your wallet shows a quote from a third-party paymaster.
- The quote tells you how much WLD is needed to cover the fee.
- If you accept, the paymaster pays the fee upfront.
- During the transaction, the paymaster is instantly reimbursed in WLD.
Everything happens in a single, secure on-chain process.
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.
Why are crypto transactions irreversible?
Crypto transactions are permanent and cannot be reversed once they’re confirmed. This is a key feature of blockchain technology, which powers most cryptocurrencies.
This means that once funds are sent, they cannot be recovered unless the recipient chooses to send them back.
1. Blockchain is Unchangeable
Once a transaction is recorded on the blockchain (a public digital ledger), it cannot be changed or deleted. This is called immutability. It helps keep the network secure and prevents anyone from tampering with past transactions.
2. No Central Authority
Unlike banks, cryptocurrencies operate on decentralized networks with no single authority controlling the system. This means there is no bank or company that can reverse a transaction once it’s been processed.
3. Transactions are Final
When a crypto transaction is confirmed, it’s final. There are no chargebacks or cancellations like with credit card payments. Because transactions cannot be undone, it’s important to carefully review all details before sending funds.
4. Transaction Validation
Each transaction goes through a validation process. Once it’s confirmed by the network, it is permanently added to the blockchain.
5. Sufficient Balance is Required
A crypto transaction can only be processed if you have enough balance in your wallet to cover:
The amount you are sending
Any applicable network fees
If your balance is insufficient, the transaction will not go through.
How to Protect Yourself?
- Double-check the wallet address before sending funds.
- Confirm that you are using the correct blockchain network (chain). Sending funds to the correct address on the wrong network may result in permanent loss.
- Make sure the token you are sending is supported by the receiving wallet.
- Verify the amount before confirming the transaction.
- Only send funds to trusted recipients and be careful of scams.
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.
Where can I learn more about crypto currencies, technologies, and Web3 projects?
Learn more about crypto technologies, currencies, and Web3 projects!
- What is World Chain?
- What is Optimism?
- What is USDC?
- What is Ethereum?
- What is Bitcoin?
- What is an Airdrop?
Translations may differ slightly from the original English content. For the most accurate information, please refer to the article's English version if any discrepancies occur.