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 swap USDC ↔ EURC at 0.30% fee, send to 10 African countries via bank or mobile wallet, and earn 4.86% APY via Circle's USYC — all on 

fully powered by Circle USDC, EURC, and USYC

 is a hybrid on-chain FX desk and remittance engine for Africa. It combines three products in one interface:

, slippage protection enforced on-chain via minAmountOut, 5-minute rate timelock, ±20% rate bounds. 

 — User sends USDC or EURC, recipient gets NGN, KES, GHS, XOF, FCFA or other local currency directly in their bank account or mobile wallet across 10 African countries. Authorized by EIP-191 wallet signature. Powered by Bitnob (NGN), Flutterwave (10 countries), and Paystack (NGN fallback).

 — Deposit USDC, earn 4.86% APY via Circle's USYC (tokenized US Treasury Bills). Live price feed via Hashnote Teller previewRedeem() — no hardcoded values. Circle USYC allowlist approved March 2026. TVL: 6,718+ USYC. No lock-up, no fees.

 — deposit USDC and watch your USYC balance accrue at 4.86% APY

 — select Ghana, enter a test bank account, sign with your wallet

: Solidity 0.8.24 (contracts), Python/Flask (backend API), Ethers.js v6 (frontend), Nginx + Gunicorn (infra), SQLite → PostgreSQL at mainnet

: EIP-191 message signing for all remittance authorizations — no private keys on server

: Every swap, send, and yield deposit uses USDC or EURC as primaryasset. Gas paid in USDC on Arc — zero ETH dependency

: Hashnote Teller previewRedeem() called live — no hardcoded APY or price values

: Bitnob and Flutterwave webhook callbacks update payout status in real time with full reference tracking

: REST endpoints for rates, countries, banks, payout, history, yield stats — all documented in GitHub repo

: 97/100 threat score, 0 critical, 0 high vulnerabilities

: nonReentrant guard, 5-min rate timelock, ±20% relative rate bounds, absolute bounds (0.5–2.0 USDC/EURC), 24-hour withdrawal timelock with 50% cap, SafeERC20, CEI pattern, two-step ownership transfer

 → 3-of-5 Gnosis Safe multisig before mainnet

Third-party manual audit planned Q2 2026 pre-mainnet

: centralized FX oracle (Open Exchange Rates API) — mitigated by on-chain bounds, Chainlink integration planned Q4 2026

: https://github.com/KudiArc/kudi-arc/blob/main/docs/WHITEPAPER.md

: https://github.com/KudiArc/kudi-arc/blob/main/docs/ARCHITECTURE.md

: Fork the repo, deploy your own KudiSwap instance, integrate the REST API for USDC/EURC rates and payout routing into your own app

: KudiArc demonstrates a full Circle-native stack — USDC + EURC + USYC — on Arc in one dApp. Reference architecture for Africa-first DeFi

: Connect your wallet at kudiarc.xyz, get testnet USDC from faucet.circle.com, and experience USDC-gassed transactions on Arc with no ETH needed

If you are building on Arc and need USDC ↔ EURC swap orfiat offramp functionality, would you integrate KudiArc's API directly or prefer a standalone SDK?

For the Chainlink oracle integration planned for V3 — is anyone in the Arc ecosystem already running Chainlink price feeds we could coordinate with?

Introducing KudiArc on Arc: Africa-first stablecoin FX swap, remittance, and USYC yield — live on testnet

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