Block peak - The block variety and duration with the blockchain (in blocks) on generation of the present block Nonce - The transaction number for 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://thesocialcircles.com/story6028099/the-2-minute-rule-for-blockchain-explorer-solana-https-www-instapaper-com-p-16864836