Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range to the from address (Keep in mind this starts at 0 so a nonce of 100 would essentially be the 101st transaction submitted by this account) https://xyzbookmarks.com/story20429334/5-simple-statements-about-blockchain-explorer-solana-explained-https-www-multichain-com-qa-user-knotdrop3