Block top - The block number and length in 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://bookmarkcolumn.com/story20148069/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-pad-stuve-uni-ulm-de-qjwqtezvsfelat3ec1kc9q