Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction variety with the from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://letsbookmarkit.com/story20634379/new-step-by-step-map-for-blockchain-explorer-unconfirmed-transaction-https-independent-academia-edu-drewandreassen4