Block peak - The block variety and size 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://apollobookmarks.com/story20155909/the-2-minute-rule-for-blockchain-explorer-solana-https-pad-stuve-uni-ulm-de-qjwqtezvsfelat3ec1kc9q