IntCash

A Stripe-style Widget for Private Payments with Universal Chain Deposits and ZK Verification.

Imagine a Stripe widget for Web3. It can be integrated in any marketplace. It relies on IntMax to achive privacy for the users. If your balance is too low, you can top-up your account with our usual Web2 providers, but web3 is also supported out-of-the-box, with a UX as simple as the web2 one. It is widget that is network agnostic and allow websites, apps, and platforms to receive private, anonymous payments using IntMax with deposits from any chains.

Privacy is often conflicting with regulation or even accountability. That's why are using Self Protocol for verification without disclosure for the users. And merchants' verification with on-chain results to be sure that they will always be accessible and that the name and the country of the merchant is available for users to verify. To provide a long-term registry on Ethereum Sepolia (and potentially integrate it in ENS) we are bridging the result of the Self protocol verification using Chainlink CCIP.

With zero-knowledge (ZK) technology, transactions and user's characteristics are verified, without exposing any user data. A privacy-first payment solution designed to focus on user needs and ease of use.

Onchain side: We have a Self Protocol Proof Verifier Contract on Celo Alfajores, it checks that the proof is valid and collect the informations disclosed. In the oracle callback, a cross-chain call with CCIP is sent to Ethereum Sepolia. The goal is to store the merchant's address, name and nationality on-chain to avoid any abuse. The verifiaction checks that the merchant is not part of the OFAC banned list and that they are more than 18 years old.

Front-end side: Multiples pages are available once the user / merchant has verified his identity through Self Protocol such as Merchant Dashboard / Marketplace & User Dashboard. Integrating Privy embedded wallet to have it manage the IntMax wallet interaction in a seemless way.