Block top - The block number and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would truly be the 101st transaction submitted by this account) https://e-bookmarks.com/story6173523/not-known-details-about-blockchain-explorer-ltc-https-www-blurb-com-user-optionname7