Block top - The block number and length from the blockchain (in blocks) on development of the present block Nonce - The transaction range with the from address (Remember this commences at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Contract creation https://orangebookmarks.com/story20300101/5-simple-statements-about-blockchain-explorer-solana-explained-https-www-instapaper-com-p-16864836