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The settlement desk for Robinhood Chain and Arc

Stablecoin FX and payments from Robinhood Chain into USDC and EURC on Arc, quoted onchain and settled by escrow.

Explore the desk
THE PROBLEM

Dollars are here, the rails are not

Robinhood Chain settles in USDG, USDC and USDT, but nothing on it reaches Arc, where Circle's USDC and EURC live natively. Robinhood Chain is not a CCTP domain, so there is no burn and mint route, and euro liquidity does not exist on the chain at all.

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Settled volume
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Open quotes
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Median fill time
Robinhood Chain and Arc
THE SOLUTION

A quoted price, settled by escrow

ARCIDEX makers post prices onchain for each lane. A taker locks the source token on Robinhood Chain, the maker delivers USDC or EURC on Arc, and the escrow pays the maker once the taker confirms or the dispute window passes.

Illustrative desk price for USDC into EURC against the ECB reference; the band is the maker spread.
DESK APPLICATIONS

Payments and FX

One escrow runs both: dollars moved into Arc at par, and dollars converted into euros at a maker's price, with the same proof and the same dispute path.

Cross-chain payment

Dollars into Arc

Pay USDC, USDG or USDT on Robinhood Chain and the recipient receives USDC on Arc, where it is the gas token itself. The escrow holds your funds until the delivery is confirmed.

Illustrative payment at par: the order record on Robinhood Chain beside the amount locked and the amount delivered on Arc, advancing through three order sizes.
Stablecoin FX

Dollars into euros

Makers quote EURC per dollar onchain. You see the desk price beside the ECB reference before you lock anything, and the contract settles at exactly the quoted price.

Illustrative FX quote: the quote record beside the ECB reference and the desk price, with the maker spread read out, advancing through three order sizes.
SETTLEMENT WORKFLOW

One escrow for quote, delivery and settlement

Every order carries its quote, its maker, its Arc recipient and its deadlines. Pricing, delivery proof and settlement all read the same record.

01Quotes

Priced by makers, onchain

Makers post a price, a size range and a capacity per lane. The best live quote is what the swap card shows, and it is the price the contract enforces.

Illustrative quote book for one lane, USDC into EURC: seven maker quotes with price, size and maker, the best quote on top, beside the ECB reference.
02Escrow

Locked on Robinhood Chain

Your source token moves into the desk contract, not to the maker. It leaves only to the maker after confirmation, or back to you after a refund or a won dispute.

Illustrative escrow flow: the desk contract on Robinhood Chain holds the taker's source token, the maker delivers on Arc, and the escrow releases to the maker after confirmation or back to the taker after a refund.
03Delivery

Filled on Arc

The maker sends USDC or EURC on Arc to the recipient you named, then records the Arc transaction against the order. Arc finality is under a second.

Illustrative replay of one session of deliveries: the amount locked on Robinhood Chain against the amount delivered on Arc, with spells where a maker ran behind shaded, disputes marked, and orders, fills and median fill time following the replay.
04Proof

Read from both chains

The app reads the Arc receipt and shows the exact amount delivered to your recipient, then you confirm on Robinhood Chain.

Illustrative proof check: the order on Robinhood Chain and the receipt on Arc side by side, each field read and matched in turn, ending in a verified delivery ready to confirm.
05Settlement

Confirm, wait, or dispute

Confirm to release the escrow at once. Say nothing and it releases after the dispute window. Dispute and the arbiter rules on the evidence. If no ruling comes within the arbiter window, anyone can return your escrow to you in full.

Illustrative settlement outcomes: where the escrow went, share of orders per outcome, released to the maker on the right and returned to the taker on the left.
INTERFACES

The same record in every interface

The swap card, the desk console and the tables all read one desk contract, so a price on the card is the price in the order.

Swap

Lock a source token and name an Arc recipient in two steps.

Desk console

Post quotes, fill orders and record Arc deliveries from any wallet that holds a bond.

Orders

Every order you opened or filled, with its Arc proof and its deadlines.

Onchain desk

A single verified contract on Robinhood Chain; read it from any node.

OPEN

Open the desk

Connect a wallet on Robinhood Chain. Makers who want to quote a lane post a bond from the desk console.

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