Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (Remember this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) Deal generation https://bookmarkinglive.com/story21474429/5-simple-statements-about-blockchain-explorer-solana-explained-https-www-multichain-com-qa-user-knotdrop3