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://pageoftoday.com/story5695856/not-known-facts-about-blockchain-explorer-usdt-https-www-webwiki-nl-cryptoexplorerhub-com