Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted https://doctorbookmark.com/story20661559/blockchain-explorer-usdt-trc20-fundamentals-explained-https-www-blurb-com-user-optionname7