Block top - The block number and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection with the from address (Remember this starts off at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) Agreement https://socialeweb.com/story6022696/blockchain-explorer-usdt-trc20-fundamentals-explained-https-list-ly-churchkjeldsen86wpibju