Block top - The block range and length on the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Agreement development https://modernbookmarks.com/story20007303/what-does-blockchain-explorer-usdt-mean-https-mathiasen-curry-2-federatedjournals-com-diving-deep-blockchain-explorers