One wallet. Every venue.
One buying-power number.
Plinth computes a SPAN-style cross-product margin number in Rust, deployed as Stylus. The same math costs 10x to 100x more gas in equivalent Solidity, which is why it has not shipped onchain elsewhere.
Capital efficiency, mathematically.
Live vault TVL · 1 venue live today (Aave, via a test pool); the rest are deployed and register through mainnet · honest disclosures
Aqueduct routes assets through Chainlink CCIP. Collateral posted on Robinhood Chain becomes Plinth credit on Arbitrum in under ten seconds.
Move collateral between chains in one transaction.
How a cross-chain transfer flows through Chainlink CCIP · walk the flow in /app/transfer (the testnet CCIP lane is pending)
You sign one Intent Sigil, an EIP-712 mandate authorising one agent, for one strategy, for a finite window. Postern issues a session key. Your master key never moves.
Agents trade with bounded mandates.
How a bounded agent mandate executes, step by step · issue a live mandate in /app/agents
Lantern publishes a signed Merkle attestation about every 45 minutes. Anyone can verify a balance against it locally, without trusting Atrium.
Every dollar, on the public record.
Live proof-of-reserves · read directly from Lantern on Arbitrum Sepolia · full record at /lantern
Eighteen subsystems. One building.
The codebase is named after the parts of a Roman house. Plinth carries weight. Postern is the small gate. Aqueduct moves water. Each subsystem owns its room.
Each subsystem owns one responsibility. Thirteen are live on testnet today; all eighteen ship at launch, with Stoa conditional on Phase-2 funding.
Eighteen named pieces. Four architectural blocks.
Risk engine
Cross-product margin, liquidations, options pricing. Rust, deployed as Stylus.
Venues + cross-chain
Portico framework, Chainlink CCIP bridge, wallet abstraction layer.
Agents + APIs
ERC-8004 mandates, copy-trading marketplace, paid agent surface, indexing.
Trust + ops
Proof-of-reserves, compliance, tax exports, CLI, partner programmes.
Risk math lives in Rust, deployed as Stylus. The venue layer lives in Solidity, on OpenZeppelin patterns. Chainlink CCIP is the messaging bus between chains.
Stylus for hot math. Solidity for the venue layer.
The venues and infrastructure rails Atrium integrates across Arbitrum Sepolia and Robinhood Chain testnet.
Step inside.
The testnet is open.
The faucet drops 5 test USDC and 0.0005 test ETH. Onboard with a passkey, then post collateral and trade across venues with one margin number.