Block top - The block selection and size in the blockchain (in blocks) on generation of the current block Nonce - The transaction number to the from address (bear in mind this begins at 0 so a nonce of one hundred would essentially be the a hundred and first transaction https://socialnetworkadsinfo.com/story22225255/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-independent-academia-edu-drewandreassen4