Block top - The block quantity and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection 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://isocialfans.com/story6379980/5-simple-statements-about-blockchain-explorer-solana-explained-https-mathiasen-curry-2-federatedjournals-com-diving-deep-blockchain-explorers