Block height - The block amount and size on the blockchain (in blocks) on development of the present block Nonce - The transaction range with the 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://socialrator.com/story11383537/the-2-minute-rule-for-blockchain-explorer-solana-https-rentry-co-4vomqtzo