Block height - The block amount and size on the blockchain (in blocks) on generation 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://bookmarkinglog.com/story20536070/5-simple-statements-about-blockchain-explorer-solana-explained-https-setiathome-berkeley-edu-show-user-php-userid-13199150