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 (Keep in mind this begins at 0 so a nonce of one hundred would in fact be the a hundred and first https://sb-bookmarking.com/story20390289/details-fiction-and-explorer-blockchain-ethereum-https-www-instapaper-com-p-16864836