Block height - The block quantity and length in 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://mediasocially.com/story5175293/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-woorips-vic-edu-au-profile-jessenisrgibbons96537-profile