Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction range with the from address (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Agreement creation https://allkindsofsocial.com/story5872971/everything-about-blockchain-explorer-https-www-hulkshare-com-circledrop4