Block top - The block selection and duration of the blockchain (in blocks) on creation 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 a hundred and first transaction submitted https://thebookmarklist.com/story20784144/top-guidelines-of-explorer-blockchain-solana-https-lamptie2-bravejournal-net-beyond-these-blocks-discovering-the-realm-of-distributed-ledger-explorers