Block top - The block range and duration of the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (bear in mind this starts at 0 so a nonce of a hundred would really be the a hundred and first transaction https://e-bookmarks.com/story5908949/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg