Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkingfeed.com/story20617390/blockchain-explorer-fundamentals-explained-https-www-tarauaca-ac-gov-br-profile-robleswcifuentes23175-profile