Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that 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://doctorbookmark.com/story20291625/not-known-facts-about-blockchain-explorer-usdt-https-md-farafin-de-0k9kbddstjwuieqthhbjgg