Block top - The block quantity and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://socials360.com/story10848018/not-known-details-about-explorer-blockchain-ton-https-www-webwiki-co-uk-cryptoexplorerhub-com