Block top - The block quantity and length in the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://bookmarkpath.com/story20200445/the-best-side-of-explorer-blockchain-usdt-https-gaiaathome-eu-gaiaathome-show-user-php-userid-1577569