Block top - The block range and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction selection for the from address (bear in mind this starts off at 0 so a nonce of a hundred would essentially be the 101st transaction submitted by https://bookmarksea.com/story20415711/blockchain-explorer-fundamentals-explained-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg