Block top - The block range and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (Remember this starts at 0 so a nonce of 100 would in fact be the one hundred and first transaction submitted by https://social4geek.com/story5862597/what-does-blockchain-explorer-usdt-mean-https-intensedebate-com-people-hawkwhorl3