Block top - The block selection and duration of your blockchain (in blocks) on creation of the current block Nonce - The transaction selection with the from address (Keep in mind this commences at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://getsocialsource.com/story5741344/not-known-details-about-explorer-blockchain-ton-https-heavenarticle-com-author-pathpastor4-452336