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 (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://businessbookmark.com/story5721720/5-simple-statements-about-blockchain-explorer-solana-explained-http-www-stes-tyc-edu-tw-xoops-modules-profile-userinfo-php-uid-3693980