Block top - The block selection and duration on the blockchain (in blocks) on development of the present block Nonce - The transaction selection for that from address (bear in mind this begins at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://classifylist.com/story22745309/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-instapaper-com-p-16864836