Block top - The block selection and length in the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://bookmarkbooth.com/story20322191/everything-about-blockchain-explorer-https-www-holycrossconvent-edu-na-profile-rosenberghbnborg32409-profile