Nano uses a structure which is block-lattice, unlike the other cryptocurrencies which use the conventional blockchain. The individual blockchain of each account is equivalent to the history of the transaction or balance of the account. The individual blockchain of each account is referred to as the account-chain and can only be updated by the owner of the account. This allows the owner to immediately update the account-chain which results in quick transactions. Only the owner of the account-chain is able to add the blocks and hence the transfer of funds require two transactions. A send transaction which will result in the deduction of the amount from the account of the sender and a receive transaction which will result in increasing the amount in the account of the receiver. While the send transaction is being performed, it is not essential for the receiver to be online. The receiving of the transaction can be performed at any time.
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