OTC settlement with
selective disclosure.
Umbra lets institutions trade USDC and EURC in size without displaying amounts in the open market interface. Agree on terms, settle on Arc, give your auditor the participant keys they are authorized to use.
Application privacy is not chain privacy
Umbra omits amounts from quote cards and encrypts participant audit disclosures. Arc remains a public EVM network, so transaction calldata can still be inspected onchain.
How a trade works
You set the direction and amount. The size stays off the market card while your participant disclosure is encrypted for later audit.
The other party accepts your quote and locks in at the rate you both agreed. Each side receives a separate audit key.
The maker triggers settlement. Both escrowed sides swap atomically with no partial fill.
Built for serious traders
Trade cards omit amounts while encrypted maker and taker records support participant-controlled audit access.
Maker and taker disclosures are encrypted separately and stored on the blockchain. Each participant can share their own view key with a compliance team or regulator.
USDC and EURC settle directly on Arc Testnet. Finality in under a second. Gas is paid in USDC so there are no ETH swings eating into your spread.
Both sides settle together. If anything does not add up, the whole thing reverts. You get exactly what you agreed to, or nothing moves.
Post a quote for anyone to take, or restrict it to a specific wallet address. The amount stays off the quote card either way.
Every trade is recorded on Arc permanently. One participant key reveals one side; both keys assemble the complete matched-trade audit record.
Ready to trade?
Connect your wallet on Arc Testnet, grab some USDC from the faucet, and post your first quote.