Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (bear in mind this begins at 0 so a nonce of 100 would truly be the 101st transaction submitted by this account) https://mylittlebookmark.com/story6291199/what-does-eth-blockchain-explorer-mean-https-escatter11-fullerton-edu-nfs-show-user-php-userid-9253086