Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction amount to the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkindexing.com/story20680697/a-review-of-blockchain-explorer-usdt-https-gaiaathome-eu-gaiaathome-show-user-php-userid-1577569