Block top - The block selection and length from 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://bookmarkbirth.com/story21331060/the-2-minute-rule-for-blockchain-explorer-solana-https-cuwip-ucsd-edu-members-georgeuncle0-activity-1839979