Block height - The block selection and duration of your blockchain (in blocks) on generation 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://scrapbookmarket.com/story20445473/what-does-blockchain-explorer-usdt-mean-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua