Block top - The block number and duration with the blockchain (in blocks) on generation of the present block Nonce - The transaction number for 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://bookmarksusa.com/story20311807/everything-about-blockchain-explorer-https-case-edu-cgi-bin-newsline-pl-url-https-cryptoexplorerhub-com