Oasis Network (ROSE) is a privacy-centric smart contract platform built on the Cosmos SDK. This project prioritizes use cases for applications that promote data privacy and user confidentiality.

Cloud computing platform to solve the scalability and privacy problems existing in many public chains.

Privacy computing will be an important goal of the next generation of blockchain development.

By separating computing, consensus and storage, computing nodes generate results in parallel operation and submit the results to the consensus layer, which verifies the upchain. Since network consensus does not require all nodes to carry out, the performance is greatly improved, and each computing node adopts TEE trusted execution environment. No external application or underlying system can obtain the executing code and sensitive data inside the enclave, which effectively solves the scalability and privacy problems existing in the current public chain.

Oasis currently offers Parcel SDK, an NPM development package that lets developers write applications that interact with the Oasis network directly in JavaScript, without having to write smart contracts. Developers can use Parcel SDK to develop applications and deploy them on the Oasis network. The key manager provided by the corresponding confidential parallel time environment (each run time represents the duplicate application program with shared state, because the programs can run in parallel and are independent of each other, improving the overall performance of the network) generates the key pair, and encrypts the data uploaded by the user with the public key of the program. Then the consensus committee will randomly select a group of computing nodes that support TEE trusted execution environment for calculation, and the encrypted user data will enter the security area of the computing node with the corresponding program. If the verification result of the key manager is: The program in the security zone of the compute node is really the corresponding program, and the key manager will release the corresponding private key to unlock user data. When the calculation result is generated, Oasis will encrypt the calculation result before it comes out of the security zone.

ROSE tokens will be used for transaction fees, collateral, and entrustment at the Oasis Network consensus layer.

Proof of interest POS.

Computing consensus separation: Oasis network separates consensus services from computing, which significantly improves the overall performance of the network. Its core design mainly divides consensus and computing into consensus layer and ParaTime layer: 1) Consensus layer: consensus layer is a decentralized verification node set running the proof-of-interest blockchain; 2) ParaTime layer: The ParaTime layer is a set of parallel runtimes, each representing a replicated application with shared state. This design allows multiple runtimes to process transactions in parallel without affecting each other, meaning that complex calculations processed at one run time do not affect the speed of the other, improving overall network performance. Different from sharding, Oasis Labs uses differential detection. Once there is a conflict in the output results of compute nodes, nodes at the consensus layer verify which node's processing process is tampered with, and then remove the faulty node from the network. Generally, in order to ensure security, All nodes must compute hash values to ensure state consistency, so as to reach consensus. With differential detection, Oasis Labs can maintain the same security level as sharding in the case of smaller state replication, so as to improve performance while ensuring network security.

Oasis tokens total 10 billion, and at launch, the network will distribute approximately 8.05 billion ROSE tokens to existing stakeholders, founders, and community reserves. The breakdown of these distributions (as a percentage of the maximum supply) is as follows: Supporters: 23.0% Communities and ecosystems: 22.5% Core Contributors: 20.0% Foundation Gifts: 10.0% Strategic Partners and Reserves: 5.0% Oasis Network allocates the remaining 19.5% as pledge reward to verifiers and principals to protect the chain. Oasis Labs expects about 1.5 billion tokens to be in circulation immediately after mainnet launches.

1. High-performance: In the current privacy in computing, separate the consensus and calculation for the Oasis network consensus layer and calculation, calculating layer using the TEE trusted execution environment intelligent contract operation, the unique structure, make the main chain of the Oasis network can guarantee scalability and under the premise of privacy, support computation intensive use cases, such as machine learning and deep learning, The application prospect is wide in the future. 2. Backward compatible Ethereum: The EVM-based implementation enables Ekiden (Oasis Labs' core platform) to support existing Ethereum smart contracts, meaning that any Ethereum-based DAPP can use Ekiden as a scaling solution and support Rust and all EVM-compatible programming languages. Developers can use their familiar programming languages to develop DAPPS on Ekiden platform. Overall, Oasis has obvious development environment advantages over other high-throughput public chains, which is conducive to the development of the whole ecosystem. Keystone Open Source Project: Most of the team members come from the University of California, Berkeley, with profound technical background and high industry fit. In terms of trusted hardware, Oasis Labs cooperates with MIT to carry out the "Keystone Open Source Project of Secure Hardware", aiming to build a trusted execution environment with secure hardware enclave, with a high overall innovation degree.

Approximately 2 billion ROSE tokens will be paid as inflation incentives to stakeholders and principals who contribute resources to the network.

From the aspect of efficiency: Oasis separates consensus and computation, with computing nodes specialized in processing computation and consensus nodes forming consensus committee specialized in verifying computation and packaging calculation hash value chain. Since consensus is not required among all nodes, efficiency is effectively improved. Compared with Platon, which adopts secure multi-party calculation based on confused-circuit, ARPA can support more participants and is more suitable for arithmetic calculation. However, more participants' participation in calculation will cause high communication costs for various parties, especially in terms of bandwidth. Compared with Enigma using TEE, because Enigma uses DHT distributed hash table to store file index on the chain and store data itself under the chain, it effectively improves computing efficiency. On the whole, Oasis Labs is higher in efficiency than other competing products. In terms of privacy: The TEE trusted execution environment adopted by Enigma and Oasis is relatively centralized although it relies on trusted manufacturers. Moreover, currently Intel's SGX extended instruction set has two vulnerabilities sgXSpectre (side channel attack) and Foreshadow (false TEE trusted execution environment). However, Oasis Labs has been working with MIT on the Keystone project to build a trusted execution environment with secure hardware enclave. ARPA and PlatON can encrypt and distribute data to computing nodes in multiple copies when there are more computing participants, which is a relatively decentralized method. From the perspective of privacy protection, Oasis Labs is general but innovative. In terms of universality: Currently, THE MPC secure multi-party computing adopted by ARPA is still in its early stage. Currently, there are not many operation types that can be supported, and the homomorphic encryption operation is slow, and the communication cost between multiple nodes is high. There is no clear and feasible solution after communication with ARPA team. Because Oasis and Enigma both TEE trusted execution environment will run the code and data in the "little black room" without involving complex fragment encryption, and finally verify the summary, which can support many operation types. Oasis divides calculation and consensus into consensus layer and ParaTime layer, and computation can be executed in parallel. In addition, the maintenance of on-chain distributed ledger only requires consensus committee (consensus node set), and does not require consensus of all network nodes. It can support compute-intensive operations such as machine learning, and has rich application scenarios and strong universality in the future.

Oasis Labs specifically designs consensus and computing into consensus layer and Paratime layer. Its unique design greatly enhances the expansibility of the overall network compared with other competing products, supports computation-intensive operations such as machine learning, and enriches future application scenarios. In terms of privacy protection, TEE trusted execution environment is adopted as a solution. Computing nodes need to support TEE trusted execution environment. Smart contracts are put into "small black room" to effectively protect sensitive data and code. However, Oasis Labs cooperates with MIT to carry out the Keystone open source project, aiming to build a trusted execution environment with secure hardware enclave. On the whole, COMPARED with other competing products, Oasis Labs has higher performance, strong versatility, high innovation degree of overall technical architecture and rich application scenarios in the future.

1.TEE Vulnerability risk: Oasis Labs' compute nodes need to support TEE trusted execution environment, which undoubtedly increases the threshold for nodes to participate in the network. Moreover, it adopts Intel's SGX extended instruction set as its specific scheme of TEE trusted execution environment. However, two vulnerabilities SGX Spectre (side channel attack) and Foreshadow (false TEE environment) have been exposed in Intel's SGX extended instruction set. Oasis Labs that overuse SGX have a relatively high risk. 2. Low assignability of contracts: Ekiden emphasizes the independent execution of contracts, and the smart contracts are transferred to the computing nodes that support TEE trusted execution environment, which improves the overall performance of the network. However, due to the independent and completely parallel execution of contracts, it is difficult to call each other.

Oasis Labs has a stable team. Through its unique computing and consensus separation architecture, the overall network performance has been greatly improved, and the future application scenarios are rich. Moreover, Oasis Labs has a good development environment for developers, which is conducive to the migration and improvement of the entire ecosystem.