Block top - The block selection and length from 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 one hundred would in fact be the a hundred and first transaction https://prbookmarkingwebsites.com/story26225784/blockchain-explorer-fundamentals-explained-https-www-instapaper-com-p-16864836