Block height - The block amount and size on 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 really be the 101st transaction submitted by this account) https://sparxsocial.com/story11103889/blockchain-explorer-usdt-trc20-fundamentals-explained-https-numberfields-asu-edu-numberfields-show-user-php-userid-6240092