Block top - The block number and length in 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 a hundred and first transaction submitted https://bookmarkport.com/story22820129/blockchain-explorer-usdt-trc20-fundamentals-explained-https-500px-com-p-barrkijrooney