Swap Pay is an SDK that turns fragmented token balances into smooth payments using EIP-5792

PayPal
Also appeared as PayPal USD
PayPal is known for being at the forefront of digital commerce and now it’s opening the door for millions of merchants and customers around the world to pay (and be paid) their own way — whether in fiat, cryptocurrency, or even the PayPal stablecoin, PYUSD.
- Prize money awarded
- $30,000
- Prizes
- 9
- Winning projects
- 9
- Hackathons
- 3
- Largest prize
- $4,500
- Active
- 2025
What they reward
Tech their winners favour
Share of PayPal's winners using it, against all entries at the same hackathons.
Hackathons
- ETHOnline 2025 Oct 10–31, 2025$10KGold3$10K
- New Delhi Sep 26–28, 2025$10KGold3$10K
- New York 2025 Aug 15–17, 2025$10KGold3$10K
Winners
All 9 winning projects →Anonymous, secure, verifiable marketplace with ZKPs, stealth addresses & PYUSD payments.
Pay with crypto on any site. PYUSD → escrow → virtual card. Simple & secure.
Unique agent-driven clusters for safer, diversified crypto investments.
AI DEX for staking & trading renew. energy credits on Sepolia with PYUSD settlements & Pyth pricing.
Job platform where payments are held safely in escrow until work is completed and verified
Decentralized platform for tokenized renewable energy investments, enabling profit from energy prod.
Decentralized bounty platform: Vincent AI scores PRs, PYUSD pays instantly, Lit Protocol encrypts
EchoBox: ENS-addressed, time-locked crypto gifts for birthdays, holidays, and special moments.

