Block height - The block amount and size on 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://bookmarkmargin.com/story20570923/the-2-minute-rule-for-blockchain-explorer-solana-https-mathiasen-curry-2-federatedjournals-com-diving-deep-blockchain-explorers