Jack Jack is Zooko’s Dog. Zooko is the creator of Zcash and paving the way for privacy. $JACKJACK was launched on pumpfun on November 7, 2025. 100% of $JACKJACK trading fees will be donated to Zcash Foundation (or to other organizations of @zooko’s choosing). Within one week, $70,000 has already been donated to the foundation. $JACKJACK shows that memecoins can be used to make the blockchain a better place!