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://thekiwisocial.com/story5894448/what-does-eth-blockchain-explorer-mean-https-hedgedoc-eclair-ec-lyon-fr-6mkao4fyqry-pm5xpak7hg