Block top - The block number 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 truly be the a hundred and first transaction submitted https://single-bookmark.com/story20692608/the-2-minute-rule-for-blockchain-explorer-solana-https-fletcher-odonnell-thoughtlanes-net-exploring-further-the-world-of-blockchain