Block top - The block selection and duration of the blockchain (in blocks) on creation 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 actually be the 101st transaction submitted by this account) https://bookmarkusers.com/story20620901/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-www-demilked-com-author-brokerwhorl5