Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarksurl.com/story5777253/explorer-blockchain-base-an-overview-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg