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Send USDC privately
to any Gmail address
across chains

Send USDC to any Gmail address from Base

Send USDC from Base to any Gmail address privately.
Recipients can claim on any chain using 1Inch Fusion+.

Base
USDC
Share this code with the recipient to claim the funds.

How Cross-Chain Private Transfers Work

1

Deposit on Base

Send USDC on Base to a Gmail address. The payment is stored privately using a cryptographic hash of the email and a random value.

2

Cross-Chain Storage

Hyperlane transfers the payment data to Starknet, where it's stored in a Merkle tree for efficient verification.

3

Claim Anywhere

Verify Gmail ownership with JWT, prove membership in the Merkle tree, and claim on any chain via 1Inch Fusion+.

Built on Leading Infrastructure

Cross-Chain Architecture

Leveraging Hyperlane for seamless cross-chain messaging between Base and Starknet, with 1Inch Fusion+ for efficient cross-chain claiming.

  • Base network for USDC deposits
  • Starknet for private storage and verification
  • Hyperlane for secure cross-chain messaging
  • 1Inch Fusion+ for multi-chain claiming

Privacy & Security

Zero-knowledge proofs ensure privacy while JWT verification provides secure Gmail-based authentication without revealing personal information.

  • JWT-based Gmail verification
  • Merkle tree proofs for efficient verification
  • Nullifier system prevents double-spending
  • Cryptographic email hashing for privacy

Live Demo Features

Experience private cross-chain USDC transfers with Gmail-based claiming. Built with cutting-edge zero-knowledge technology and cross-chain infrastructure.

Base Network

Fast and cheap USDC deposits on Coinbase's Layer 2 solution

Gmail Auth

Secure JWT-based verification without revealing personal data

Starknet Storage

Private storage with efficient Merkle tree verification

1Inch Fusion+

Claim your USDC on any supported blockchain network

Technical Implementation

Deposit Flow

  • • Generate email_rnd_hash from Gmail + random value
  • • Store USDC amount and token contract on Base
  • • Dispatch to Starknet via Hyperlane messaging
  • • Create Merkle tree entry for efficient verification

Claim Flow

  • • Verify JWT token for Gmail authentication
  • • Generate Merkle proof for payment membership
  • • Create nullifier to prevent double-spending
  • • Claim via 1Inch Fusion+ on target network

Experience Private Cross-Chain Transfers

Try our live demo to send USDC from Base to any Gmail address, then claim it on any supported blockchain network.