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 actually be the 101st transaction submitted by this account) https://bookmarkforce.com/story20888809/the-2-minute-rule-for-blockchain-explorer-solana-https-graph-org-unveiling-transparency-how-blockchain-explorers-function-09-04