Block top - The block selection and length in the blockchain (in blocks) on development of the present block Nonce - The transaction amount 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://companyspage.com/story5703187/5-easy-facts-about-blockchain-explorer-api-described-https-www-instapaper-com-p-16864836