Block top - The block number and length from the blockchain (in blocks) on generation of the present block Nonce - The transaction number for 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://peakbookmarks.com/story20421008/top-guidelines-of-explorer-blockchain-solana-https-www-rosewood-edu-na-profile-engelhczrussell69263-profile