Block top - The block number and length from the blockchain (in blocks) on generation of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://maximusbookmarks.com/story20596758/facts-about-tron-blockchain-explorer-revealed-https-wikimapia-org-external-link-url-https-cryptoexplorerhub-com