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Robinhood Chain private transfers for ETH and USDG
Transfer supported assets through a non-custodial privacy pool using client-side zero-knowledge proofs.
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About Mixoor on Robinhood Chain
Mixoor on Robinhood Chain is a non-custodial private transfer tool for native ETH and USDG. Robinhood Chain is an Arbitrum Orbit L2 (chain ID 4663) that pays gas in ETH, so transfers settle in seconds for a fraction of Ethereum mainnet cost. Each asset has its own privacy pool and uses the same Groth16 zero-knowledge proof system as the rest of Mixoor to reduce direct wallet linkage on chain.
How it works
Choose ETH or USDG
Select an asset and deposit it into its Mixoor privacy pool with a cryptographic commitment.
Withdraw via relayer
Generate a Groth16 ZK proof client-side, submit through the relayer, and the selected asset reaches the recipient address.
Technical details
| ETH privacy pool | 0xc53c78099dde43836979f5381a552174fc58f83c |
|---|---|
| USDG privacy pool | 0xbb3c29523EAFf9685Dc0D373d71cc5f216DfD595 |
| Entrypoint proxy | 0x9c1ee618c57b2d8a5f628d618db5e8814e49b19b |
| Chain ID | 4663 (Robinhood Chain) |
| Chain type | Arbitrum Orbit L2 · gas paid in ETH |
| USDG token | 0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168 |
| Supported assets | Native ETH · USDG |
| Minimum deposit | 0.1 ETH · 200 USDG |
| Protocol fee | 0.25% relayer fee |
| ZK system | Groth16 · BN254 · Poseidon |
Frequently Asked Questions
What is Robinhood Chain?
Robinhood Chain is an EVM-compatible Arbitrum Orbit layer 2 with chain ID 4663. It pays gas in ETH and settles to Ethereum, so a private transfer costs a fraction of what the same transfer costs on Ethereum mainnet.
Which assets does Mixoor support on Robinhood Chain?
Mixoor supports native ETH and canonical USDG. Each asset uses a separate privacy pool, and ETH remains the gas token for both flows.
What is the fee for Mixoor on Robinhood Chain?
Mixoor charges a 0.25% relayer fee on Robinhood Chain, with no separate deposit fee. The fee is deducted from the withdrawn amount.
What is the minimum deposit on Robinhood Chain?
The minimum deposit is 0.01 ETH for the native pool and 20 USDG for the USDG pool.
How does Mixoor reduce the link between deposit and recipient?
When you deposit, Mixoor stores a cryptographic commitment instead of your address. To withdraw, you generate a Groth16 zero-knowledge proof that you know the secret behind one of the commitments without revealing which one. The proof verifies on-chain and lets a fresh wallet receive the funds.
Is Mixoor non-custodial?
Yes. Mixoor never holds user funds. Deposits go to a smart contract pool, withdrawals are authorized by zero-knowledge proofs that only the depositor can generate.
Is Mixoor open source?
Yes. The on-chain programs, ZK circuits and SDKs are open source under the Apache 2.0 license. The repositories are public on GitHub under SmithiiDev.