Block height - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://bookmarkalexa.com/story6430033/the-2-minute-rule-for-blockchain-explorer-solana-https-setiathome-berkeley-edu-show-user-php-userid-13199150