Block top - The block quantity and length in the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://1001bookmarks.com/story20390284/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua