Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection 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://hindibookmark.com/story22553682/explorer-blockchain-base-an-overview-https-www-woorips-vic-edu-au-profile-jessenisrgibbons96537-profile