Block top - The block selection and length of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://tbookmark.com/story20099484/a-review-of-blockchain-explorer-usdt-https-numberfields-asu-edu-numberfields-show-user-php-userid-6240092