Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Keep in mind this commences at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://businessbookmark.com/story5714666/explorer-blockchain-tron-an-overview-https-www-instapaper-com-p-16864836