Meridian

Tokenized Stocks Perps & Options on Robinhood Chain, with fast execution inspired by Base Denim-grade speed

[Meridian @MeridianDesk33]

Stocks are evolving beyond traditional markets. The way we trade them should evolve too.

CA: 0x6437614ea1efba0eb4b43bc1af53808722b1cf13

Introducing Meridian Desk.

A purpose-built trading desk for Tokenized Stocks on Robinhood Chain, bringing two distinct trading instruments into one platform:

→ Perps: Take long or short positions on tokenized stocks, with leverage capped at 2×.

→ Options: Access European-style Calls and Puts, opening a different way to express market views through defined contracts.

But the experience goes beyond the instruments.

Meridian is designed around fast, @base Denim-grade execution, a comprehensive tokenized stock catalog, and a unified interface that brings multiple trading strategies together.

Instead of navigating separate platforms for different strategies, traders get one dedicated environment to explore, position, and execute.

[Base @base]

Base Denim is officially live on mainnet

Native 200ms blocks, BaseTime for millisecond precision and B20 improvements ↓

[Meridian @MeridianDesk33]

Before getting into the contracts, we had to get the accounting model right.

Common Ledger isn't just about sharing a wallet balance.

We need to account for:

Cross wallet balance
Unrealized PnL from Perps
Eligible long Options value after a haircut
Initial Margin across open Cross positions
Maintenance Margin across the same account

All of these feed into one Cross account snapshot.

We're keeping the initial model deliberately straightforward. Standard Cross Margin, not SPAN or Portfolio Margin.

Getting the accounting right comes before anything else.

[Meridian @MeridianDesk33]

Introducing Common Ledger for Meridian Desk.

The idea is simple: one USDG margin account for both Stock Token Perps and Options.

Most trading platforms keep these two desks in separate wallets. We want them to work together under one account.

Your Perps and Options positions can share the same Cross collateral, while Isolated remains available whenever you want to keep a position separate.

[Meridian @MeridianDesk33]

Been working on something that could fundamentally change how Perps and Options work together.

Not just two products sitting next to each other.

Something more connected.

[Meridian @MeridianDesk33]

A trading desk is only as useful as the markets it can actually support.

One part of Meridian we've been working on is the infrastructure behind market discovery and pricing.

A quick look at what we've built:

204 Stock Tokens in the catalog.
Instant ticker search to find supported markets.
35 live Chainlink feeds connected for oracle pricing.
TradingView charts for market analysis.
Separate Perps and Options access across the catalog.

Two contracts are particularly important here:

MarketRegistry — the onchain market registry.
https://t.co/L9Wr7ZEGKJ

OracleRouter — the oracle routing layer.
https://t.co/zatEG016oq

Both are deployed on Robinhood Chain Mainnet and publicly verifiable.

One detail worth emphasizing: our pricing is oracle-based, not dependent on a thin order book. That's an important distinction in how we're building this trading experience.

[Meridian @MeridianDesk33]

One thing we wanted to get right with Meridian Options was making the risk easier to understand before entering a trade.

Here's how the current Options Engine is structured.

We're starting with European-style Calls and Puts, using a buy-to-open model. No option writing for now.

When selecting a contract, you can choose between three expiry windows:
1 day
1 week
1 month

For each expiry, we provide five strike levels relative to ATM: -10%, -5%, ATM, +5%, and +10%.

A few important details about the settlement:

Cash-settled in USDG.
Settlement is based on the oracle mark at expiry.
No underlying Stock Tokens change hands.
Your maximum loss is limited to the premium paid.

The idea is straightforward: give traders a way to express a directional view on tokenized stocks without having to manage a leveraged Perps position.

We're keeping the initial scope focused, getting the mechanics right, and building from there.

[Meridian @MeridianDesk33]

dex paid

[Meridian @MeridianDesk33]

Options trading is no longer just part of the roadmap. It's working on Meridian.

Meridian Options is now operational on Robinhood Chain Mainnet.

The demo walks through an actual TSLA Call trade, from selecting the option contract to signing the transaction and verifying its execution onchain.

Onchain proof:
https://t.co/vmOYRJCTfF

This brings another core part of Meridian's trading desk to life.

Perps and Options, each with its own execution engine, under one platform built for tokenized stocks.

[Meridian @MeridianDesk33]

A quick look at how we designed the Perps engine at Meridian.

One thing we wanted to avoid was making traders guess what happens after they open a position.

Here's how the current flow works:

You pick a Stock Token, choose Long or Short, enter your collateral, and select leverage from 1× to 2×. We deliberately keep the leverage cap at 2×.

Before you execute, Meridian calculates and displays the important numbers:

Entry price based on the Chainlink oracle mark.
Position size based on your collateral and leverage.
Estimated liquidation price.
Opening fee.
Periodic funding, using a skew-based model.

We also use isolated margin, meaning each position has its own collateral allocation rather than sharing margin across positions.

There's a reason we show these details before the trade is submitted. We want traders to understand their exposure first, not discover the numbers after opening a position.

And yes, this is already running on Robinhood Chain Mainnet.

[Meridian @MeridianDesk33]

Meridian Perps is live on Robinhood Chain Mainnet, and the first trades are already going through.

This isn't a UI preview. The video shows an actual TSLA Perps position being opened through Meridian, with the transaction confirmed onchain.

Verify the execution yourself:
https://t.co/0iBuTyKPUr

The product is live. The execution is verifiable. And this is what building onchain should look like.

[Meridian @MeridianDesk33]

Additional Mainnet Contracts

MarketRegistry
https://t.co/L9Wr7ZFeAh

OracleRouter
https://t.co/zatEG01EdY

LiquidityPool
https://t.co/7GysemFLoD

Collateral USDG
https://t.co/OaVLdvPxdK

Every address is publicly accessible through Robinhood Chain Blockscout.

No hidden deployment claims. Verify the contracts yourself.

[Meridian @MeridianDesk33]

Meridian Desk is now LIVE on Robinhood Chain Mainnet.

Perps and Options are live. The trading infrastructure is deployed, and the contracts are publicly verifiable onchain.

Start with the two core engines:

PerpsEngine
https://t.co/rIOUmQN3uF

OptionsEngine
https://t.co/LQ2jGR7vIV

This is a major milestone for Meridian.

A dedicated trading desk for tokenized stocks, bringing Perps and Options together on Robinhood Chain, with Denim-grade execution standards and leverage capped at 2×.

The remaining infrastructure contracts are listed below.

[Meridian @MeridianDesk33]

19,822,056.86 $MRDN locked on RobinFlow — non-custodial and verifiable onchain on Robinhood Chain.

https://t.co/GpV6whktd2

[Meridian @MeridianDesk33]

Perps was one milestone. Options is another.

Meridian Options is now executing on Robinhood Chain Testnet.

Verify the transaction: https://t.co/a5LtoZ5eQA

The demo showcases a TSLA Call trade, from selecting the contract and reviewing its risk parameters to confirming the transaction onchain.

This is another piece of Meridian's trading infrastructure coming to life.

Two products. One trading desk.

[Meridian @MeridianDesk33]

Meridian Perps is now executing on Robinhood Chain Testnet.

This is more than a product preview. We've successfully executed a Perps trade through the Meridian interface, with the transaction recorded onchain.

The next step is building further.

Verify the transaction yourself:
https://t.co/jgiNNtsc6P

One step closer to a fully functional trading desk for tokenized stocks.

[Meridian @MeridianDesk33]

Tokenized stocks deserve more than just spot trading.

Meridian Desk is building a complete trading environment on Robinhood Chain.

Here's what's taking shape:

→ Tokenized Stocks Perps with Long & Short positions
→ European-style Options: Calls & Puts
→ Up to 2× leverage
→ Denim-grade fast execution
→ A full catalog of tokenized stocks

One premium desk. Multiple ways to trade

[Meridian @MeridianDesk33]

For those who want to verify the deployment, here are Meridian Desk's core contracts on Robinhood Chain Testnet.

Core Contracts

• MockUSDG / tUSDG (test token)
https://t.co/EVX2fZx2A9

• MarketRegistry
https://t.co/edJSKgypMO

• OracleRouter
https://t.co/TQrFbPQ1Y3

• LiquidityPool
https://t.co/LnIWFbfk7e

• PerpsEngine
https://t.co/KMOqL9MUKN

• OptionsEngine
https://t.co/36WZShaete

Deployment Transactions

MockUSDG: https://t.co/xherUmmMUr

MarketRegistry: https://t.co/Dj8ooWGRxt

OracleRouter: https://t.co/uGpeRpON21

LiquidityPool: https://t.co/6wPRL4ygZk

PerpsEngine: https://t.co/We2shwwYe5

OptionsEngine: https://t.co/bwtu449THn

This is a testnet deployment. No production trading or real-value test tokens are implied.

Transparency from day one.

[Meridian @MeridianDesk33]

Meridian Desk is now live on Robinhood Chain Testnet.

We're building a trading desk for Stock Token Perps and Options, with a strong focus on fast execution and a cleaner trading experience.

This is our first on-chain milestone, and we're making the deployment fully public.

All core contracts are live and publicly verifiable below.

More to build. More to come.