Block top - The block variety and length with the blockchain (in blocks) on development of the current block Nonce - The transaction amount for that from address (bear in mind this begins at 0 so a nonce of 100 would essentially be the 101st transaction submitted by this account) https://expressbookmark.com/story20664348/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg