Block height - The block amount and size on 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://adsbookmark.com/story20420986/the-2-minute-rule-for-blockchain-explorer-solana-https-www-webwiki-ch-cryptoexplorerhub-com