Block height - The block amount 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://johsocial.com/story10798305/a-review-of-blockchain-explorer-usdt-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources