We built a Coinflip PoC using multiparty contracts on Ark!
Bonus points: it uses Nostr on the backend.
Ark's client-server architecture, built around presigned transactions, provides an interesting framework for coordinating complex multi-party interactions.
A key insight from our Coinflip implementation: Ark operators validate spending conditions off-chain, such that in the optimistic case, complex validation logic doesn't hit the blockchain at all.
Once the game concludes, players settle their balance without intermediary trust.
It's available here: Coinflip is available here: http://coinflip.casino
Check it out! 👾 
