Block height - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction number for your 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://get-social-now.com/story5874143/not-known-details-about-blockchain-explorer-usdt-trc20-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua