Block top - The block selection and duration on the blockchain (in blocks) on creation of the present block Nonce - The transaction variety for the from address (Keep in mind this starts at 0 so a nonce of one hundred would basically be the a hundred and first transaction https://explorebookmarks.com/story20578178/blockchain-explorer-search-an-overview-https-intensedebate-com-people-hawkwhorl3