Block top - The block selection and length of the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://growthbookmarks.com/story20782242/getting-my-blockchain-explorer-ethereum-to-work-https-heavenarticle-com-author-pathpastor4-452336