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Smart Contract Architecture

Evidence Market uses modular smart contracts deployed on Oasis Sapphire (an EVM-compatible privacy public chain). Confidential data is stored on-chain in encrypted form, and permissions are verified via SIWE tokens.

Base Modules​

  • AddressManager.sol: Uniformly manages core contract addresses, DAOs, supported tokens, and DEX whitelists.

  • SiweAuth.sol: SIWE identity authentication, supporting multi-domain verification and adapting to Sapphire zero-address scenarios.

  • UserManager.sol: Generate user IDs and manage blacklists for users, replacing addresses as contract event log parameters to protect on-chain identity privacy. Read more.

  • Forwarder.sol: Implements ERC2771 standard meta transactions, supports gasless payment interactions, and ensures that user addresses do not directly interact with the contract.

Evidence Box Market​

  • EvidenceBox.sol: The core asset contract, managing the state machine, pricing, and deadlines, using Sapphire TEE to store confidential data encryptedly.

  • Exchange.sol: The trading engine, handling the full process of Sell/Auction/Buy/Bid/Refund/Complete.

  • FundManager.sol: Fund custody and distribution, responsible for multi-currency payments, automatic exchange (DEX interaction), and yield distribution.

Bounty Market​

The Bounty Market is still under development and has not been deployed to the testnet.

Network and Contract Deployment (Mainnet/Testnet)​

ProjectMainnetTestnet
Network NameOasis SapphireOasis Sapphire Testnet
Chain ID2329423295
Block ExplorerTBDOasis Sapphire Testnet explorer
AddressManagerTBD0x268863DAeaAdcB45aBb010402600Dea7C0a04744
EvidenceBoxTBD0x8Db771373077225aEb5Af7DFCa9ba33185ba0dB3
ExchangeTBD0x0499bd1974FF382A49D0008b413422518E71e06d
FundManagerTBD0x154f826356776a75B748373aDD310a5BB449a268
UserManagerTBD0xeeF1c5Fd9bf0dFc8fD47D57c56B2ec9f52811CB2
SiweAuthTBD0x6547F0a925BD522F029D0aFEC3A239aCDcE0122a
ForwarderTBD0x6553408789c9ca50FDCa0E3120245674F4C529ad