Buddy

Jul 2025

ETHGlobal Cannes

Multichain social payments platform using NFC cards for tap-to-pay USDC.

overview

Buddy bridges physical and digital commerce through NFC-powered tap-to-pay transactions.

Users can register HaLo cards, approve USDC spending, and make payments through cryptographic signatures generated directly on hardware.

HaLo NFC chips provide hardware-based payment authentication.
Avail Nexus SDK enables crosschain USDC transfers and unified balance management.
Smart contracts manage payment authorization, chip registration, execution, and ENS subname registration.

Avail - Best use of Avail Nexus SDK for Gaming, DeFi, RWAs, Stablecoins 1st place