Block top - The block number and length from 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 actually be the 101st transaction submitted by this account) https://businessbookmark.com/story6336206/not-known-details-about-explorer-blockchain-ton-https-rentry-co-4vomqtzo