> For the complete documentation index, see [llms.txt](https://docs.miragefi.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.miragefi.org/robinhood-chain/network-details.md).

# Network details

Reference information for Robinhood Chain.

{% hint style="info" %}
Robinhood publishes RPC endpoints, explorer URLs and its own contract addresses at [docs.robinhood.com/chain](https://docs.robinhood.com/chain/). The MirageFi contract addresses live in `contracts/deployments/4663.json` and are described on the [Deployment](/architecture/deployment.md) page. Verify every address against those sources before sending funds.
{% endhint %}

## Network

| Network         | Chain ID | Status                    | MirageFi              |
| --------------- | -------- | ------------------------- | --------------------- |
| Robinhood Chain | 4663     | Mainnet since 1 July 2026 | Production deployment |

## Chain parameters

| Parameter               | Value                                                                   |
| ----------------------- | ----------------------------------------------------------------------- |
| Execution               | Arbitrum Nitro, EVM-equivalent, ArbOS 40 (EIP-7702 supported)           |
| Settlement layer        | Ethereum                                                                |
| Data availability       | Ethereum blobs (rollup mode)                                            |
| Block time              | About 250 ms                                                            |
| Preconfirmation latency | About 100 ms                                                            |
| Gas token               | ETH                                                                     |
| Median transaction cost | About $0.001                                                            |
| Canonical withdrawal    | 7 days                                                                  |
| Sequencer               | One sequencer, run by Robinhood, with sanctions screening applied there |
| Forced inclusion        | L1 delayed inbox, 24-hour delay                                         |
| Explorer                | Blockscout                                                              |

## Precompiles and conventions used by MirageFi

| Item                      | Usage                                                                                             |
| ------------------------- | ------------------------------------------------------------------------------------------------- |
| `block.timestamp`         | Every piece of time-based logic: quote expiries, staleness bounds, grace periods and the timelock |
| `block.number`            | Never relied on for time, since on Arbitrum it reflects the L1 block                              |
| `ArbSys.arbBlockNumber()` | Used only where an L2 block height is needed, for instance in event metadata                      |
| Compressed calldata       | Because L1 data cost dominates fees, RFQ quote structs are packed and signatures are compacted    |

## Standards in use

| Standard | Where                                                                            |
| -------- | -------------------------------------------------------------------------------- |
| ERC-20   | Stock Tokens (18 decimals) and USDG (6 decimals)                                 |
| ERC-8056 | Corporate actions on Stock Tokens, via `uiMultiplier()`                          |
| ERC-4626 | Share accounting in the vaults (extended for dual assets and in-kind withdrawal) |
| EIP-712  | Signing of RFQ quotes                                                            |
| EIP-1271 | Validating maker quote signatures from smart accounts                            |
| ERC-4337 | Account abstraction entry points, v0.6 to v0.8                                   |
| EIP-7702 | Delegation of an EOA to smart-account code                                       |
| Permit2  | Allowance-based pulls at settlement, for takers and makers alike                 |
| EAS      | Attestations of eligibility                                                      |

## Chainlink services on chain 4663

| Service                    | Purpose in MirageFi                              |
| -------------------------- | ------------------------------------------------ |
| Data Feeds (24/5 equities) | The mid used for vault quoting and band checks   |
| Data Streams (v11 RWA)     | Classifying the session and cross-checking fills |
| Sequencer Uptime Feed      | The trading grace after an outage                |
| CCIP                       | Bridged treasuries and gold (on the roadmap)     |
| ACE / CCID                 | An alternative eligibility adapter               |


---

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