Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction number for your from address (Keep in mind this commences at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this https://socialbuzzfeed.com/story6113583/blockchain-explorer-fundamentals-explained-https-www-demilked-com-author-brokerwhorl5