Block top - The block selection and duration with 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://brightbookmarks.com/story20664939/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-http-pandora-nla-gov-au-external-html-link-https-cryptoexplorerhub-com