Block top - The block number and length with the blockchain (in blocks) on creation of the present block Nonce - The transaction amount for the from address (Keep in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://socialexpresions.com/story5784476/the-best-side-of-explorer-blockchain-usdt-https-bbs-pku-edu-cn-v2-jump-to-php-url-https-cryptoexplorerhub-com