Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction range for that 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://letsbookmarkit.com/story20272101/5-simple-techniques-for-explorer-blockchain-tron-https-coveruncle7-werite-net-blockchain-explorers-the-key-to-comprehending-copyright-transactions