Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (Keep in mind this begins at 0 so a nonce of 100 would basically be the 101st transaction submitted by this account) https://bookmarkspy.com/story22217856/blockchain-explorer-usdt-trc20-fundamentals-explained-https-forum-repetier-com-profile-coverjaguar3