> For the complete documentation index, see [llms.txt](https://stoxfi.gitbook.io/stoxfi-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stoxfi.gitbook.io/stoxfi-docs/current-implementation-status.md). # Current Implementation Status StoxFi currently has a complete testnet implementation of its core confidential settlement lifecycle. The smart contracts, confidential balance system, cross chain messaging flow, redemption process, and browser application have been implemented and demonstrated across Robinhood Chain testnet and Ethereum Sepolia. The protocol is not currently deployed with real tokenized equities or on mainnet. ### Implementation Status | Component | Status | | ---------------------------------- | ----------------------------------- | | StoxVault | Implemented and deployed on testnet | | ConfidentialStock | Implemented and deployed on testnet | | StoxRegistry | Implemented and deployed on testnet | | Underlying asset custody | Implemented | | Decimal conversion | Implemented | | Cross chain shield | Implemented | | Encrypted balances | Implemented | | Confidential transfers | Implemented | | Two phase redemption | Implemented | | Public redemption decryption | Implemented | | Redemption proof verification | Implemented | | Cross chain collateral release | Implemented | | Overflow protection | Implemented | | Underflow protection | Implemented | | Browser application | Implemented | | Multiple stock support | Implemented | | Automated contract testing | 81 passing, 0 failing | | End to end testnet demonstration | Completed | | Real tokenized equities | Not currently integrated | | Ethereum mainnet deployment | Not deployed | | Robinhood Chain mainnet deployment | Not deployed | | Third party audit | Not completed | | Mainnet configuration | Not completed | | Operator and allowance support | Not implemented | | Version control | Not currently configured | | Continuous integration | Not currently configured | ### Smart Contract Implementation The three principal StoxFi contracts are implemented. `StoxVault` `ConfidentialStock` `StoxRegistry` The production contracts use Solidity `0.8.27` and are deployed as immutable non proxy contracts. StoxVault and ConfidentialStock are connected through fixed peer relationships. StoxRegistry provides discovery without controlling funds or confidential balances. ### Confidential Settlement The confidential settlement layer is operational on Ethereum Sepolia. Balances are represented as encrypted `euint64` values. The implementation supports encrypted balance updates, confidential transfers, encrypted comparisons, clamped arithmetic, access control, private balance decryption, and public redemption decryption. Confidential transfer amounts remain encrypted during execution. ### Cross Chain Settlement The cross chain lifecycle is implemented using CCIP arbitrary messaging. StoxFi currently supports: 1. Shield instructions from Robinhood Chain testnet to Ethereum Sepolia 2. Release instructions from Ethereum Sepolia to Robinhood Chain testnet 3. Source chain validation 4. Sender validation 5. Router validation 6. Replay protection 7. Native or LINK fee payment The underlying asset remains in StoxVault rather than being transferred through CCIP. ### Redemption The two phase redemption process is implemented. A redemption request burns the confidential amount first. The amount is then made publicly decryptable. After the decryption result and signatures are obtained, `finalizeRedeem` verifies the result and dispatches the collateral release instruction. The process is resumable because the redemption request remains recorded onchain. Finalization is permissionless while the redemption destination remains fixed. ### Browser Application The StoxFi browser application is implemented using Vite, React 18, wagmi, Reown AppKit, viem, and the FHE relayer SDK. The application supports the principal StoxFi workflows: **Shield** **Transfer** **Redeem** **Portfolio** Users interact directly from the browser with blockchain RPC endpoints, their wallet, and the FHE relayer. StoxFi does not currently operate a backend, API, database, sequencer, or application relayer. ### Asset Discovery StoxRegistry provides discovery for supported confidential assets. Additional stock relationships can be added without redeploying the complete StoxFi system. Registry listings can also be activated or deactivated. ### Current Demonstration Assets The current testnet implementation includes: **NVDA** **TSLA** **NFLX** These assets use StoxFi deployed `MockStockToken` contracts. They are stand ins for demonstrating the protocol architecture. They are not real tokenized equities and do not represent real NVIDIA, Tesla, or Netflix equity exposure. Their confidential representations are: **cNVDA** **cTSLA** **cNFLX** ### Testing Status The automated contract suite currently reports: **81 passing** **0 failing** The implementation has also demonstrated the complete lifecycle through live testnet transactions. This includes shielding, confidential transfer, redemption, and underlying collateral release. ### Security Review Status The implementation has undergone an internal security review. The review identified: 2 Medium findings 3 Low findings 5 Informational findings Both Medium findings were fixed in the deployed bytecode. An independent third party audit has not yet been completed. ### Mainnet Status The StoxFi protocol is not currently deployed on Ethereum mainnet or Robinhood Chain mainnet. The FHE infrastructure required by the Ethereum confidential execution layer is available on Ethereum mainnet. The Ethereum mainnet to Robinhood mainnet CCIP lane also exists. However, its sender allowlist is enabled. StoxFi therefore requires approval for its sending contracts before that lane can be used. The reverse Robinhood mainnet to Ethereum mainnet lane has not been verified. Mainnet configuration and deployment work also remain outstanding. ### Current Operational Constraint The immediate cross chain constraint is CCIP sender allowlisting. This constraint applies to the current testnet lanes as well as the verified Ethereum mainnet to Robinhood mainnet lane. As a result, open access to the complete cross chain StoxFi lifecycle depends on the required sender authorization. The current limitation is not the availability of fully homomorphic encryption on Ethereum mainnet. ### Development Infrastructure The current codebase contains the contract implementation, automated tests, deployment scripts, browser application, and supporting configuration. Version control has not yet been initialized. There is currently no continuous integration or continuous deployment system. There is also no StoxFi backend or database. ### Not Yet Implemented The following items are not part of the current implementation: 1. Real tokenized equity integration 2. Mainnet StoxFi deployment 3. Mainnet deployment configuration 4. Operator and allowance functionality 5. Independent third party security audit 6. Version control 7. Continuous integration and deployment These items should not be presented as existing functionality. ### Current State Summary StoxFi has progressed beyond a conceptual architecture. Its core contracts are implemented. Encrypted balances and confidential transfers are operational on testnet. The cross chain shield and redemption lifecycle has been demonstrated. The browser application is implemented. Automated testing reports 81 passing tests and no failures. The remaining boundary is between a demonstrated testnet implementation and production deployment with real tokenized equities. Mainnet activation requires additional deployment configuration, operational preparation, sender authorization for the required CCIP lane, and further security preparation. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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