Block height - The block quantity 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://thebookmarkfree.com/story20381560/blockchain-explorer-usdt-trc20-fundamentals-explained-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua