Directory/Keychain
Keychain

Keychain

Contact
Visit website
Circle Products Used
  • USDC
  • Wallets
  • Paymaster
Blockchains Supported
  • Solana
On/Off-Ramps
  • Yes
Free/Paid
  • Free
Region
  • APAC
  • North America
Country
  • India
  • United States
Support
Stable Labs

Stablecoin as borderless A2A

Keychain is cross-border A2A infrastructure. We settle international payments instantly by using stablecoin as the bridge between domestic banking systems.

Problem:

  • Domestic A2A is instant (UPI, PIX, FedNow) because banks share a ledger
  • Cross-border has no shared ledger, so we're stuck with SWIFT + correspondent banks
  • Result: 3-5 days, 5-8% in fees

Solution: Stablecoin on a public blockchain is the shared ledger that connects domestic systems.

  • US payer sends ACH. Merchants receives same-day bank deposit. 1% flat, with volume discounts for enterprise partners
  • Neither side touches crypto. We handle on/off ramp in a single flow

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