Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this account) https://adsbookmark.com/story20379115/the-2-minute-rule-for-blockchain-explorer-solana-https-skitterphoto-com-photographers-1387379-jimenez-deleuran