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What is nonce?
A transaction nonce is an order number sent with a transaction. The nonce follows the number of transactions made from the sender address and increases by one for every transaction.
Transactions can only be mined and executed sequentially on the blockchain; multiple transactions cannot be mined with the same nonce, and a nonce cannot be skipped. Since a used nonce cannot be confirmed again, the process prevents the possibilities of replay attacks, where the recipient can rebroadcast the same signed transaction repeatedly to drain the sender's wallet.
Examples:
- If you send three transactions with nonce 0, 1, and 2, nonce 1 and 2 will wait until after nonce 0 is confirmed.
- If you send three transactions with nonce 0, 0, and 1, only one of the nonce 0 transactions will be able to succeed, and nonce 1 will confirm after.
Resyncing Nonce
On rare occasions, your wallet's nonce may need resyncing due to unmined transactions or other errors causing your transactions to skip a nonce. Consequently, further pending transactions made may not be mined successfully.
Resyncing your nonce can resolve these issues and may also help recreate pending transactions that may be stuck with a low nonce.
To resync your wallet nonce, go to your Enjin Wallet's main screen and select ETH or any ERC-20 token of your preference.
After selecting a token, tap the three-dot menu in the top right corner of your wallet and tap on the "Resync Nonce" button.
When the resync has been successfully completed, you will receive a "Nonce resync completed" message.
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