FAQ
Short answers to the questions that come up before any path. Each links to the canonical page.
Is this live or Sandbox?
Sandbox. CRX runs on Base Sepolia (chain id 84532), the network operated by Coinbase, so no production funds are at risk. The contracts are under independent review and no report is published yet. Treat every security property as stated, not audited; see Audits (~1 min).
Where is my collateral held?
In your own segregated CSA on-chain. Both firms post collateral up front, never credit, and it is never pooled with other firms' funds. CRX never takes custody. See CSA & Multi-Asset Collateral (~4 min).
Is CRX a counterparty?
Yes. CRX is your counterparty, the dealer on the other side of every trade. It sources liquidity from its partners and faces you as principal. CRX also operates the venue: it publishes the contracts, runs the relayer, and onboards firms.
Does CRX clear or net trades between firms?
No. CRX is a dealer, not a DCO. It does not clear trades between other firms or net exposures across a membership, and there is no shared default fund. Each position settles against posted collateral. See Credit Model (~8 min).
Is CRX a DAO?
No. CRX is a company that runs the venue. There is no token governance over trades or settlement.
What does settlement pay in?
USDC. The contract computes the difference between the locked rate and the fixing and pays the winning side in USDC. No local currency is ever delivered. See Settlement & Payout (~3 min).
What do I actually trade?
One instrument: the non-deliverable forward (NDF). It locks an FX rate today and cash-settles the difference later. Every other product on the venue is built on it. See Non-Deliverable Forward (~2 min).
How do I get Sandbox funds?
Two tokens, two taps. Test USDC: the Sandbox MockUSDC contract has a public mint(to, amount). Anyone calls it and mints a balance. Gas (ETH): the Base Sepolia faucet at alchemy.com/faucets/base-sepolia pays test ETH per claim. Contract addresses: Addresses (~1 min).
Where do I start?
Read CRX 101 (~6 min) for the model, then run Quick Start (~5 min) for a five-minute developer win.