Block top - The block selection and duration of the blockchain (in blocks) on creation of the present block Nonce - The transaction selection with 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://indexedbookmarks.com/story20749369/blockchain-explorer-fundamentals-explained-https-www-woorips-vic-edu-au-profile-jessenisrgibbons96537-profile