Block top - The block selection and length in the blockchain (in blocks) on generation 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://bookmarksystem.com/story20044265/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-peatix-com-user-27717689