https://github.com/web3builder7/bitcoin-bnb-defi
https://github.com/web3builder7/bitcoin-bnb-defi
bnb-bitcoin polyhedra polyhedra-zk-oracle
Last synced: 10 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/web3builder7/bitcoin-bnb-defi
- Owner: web3builder7
- License: mit
- Created: 2024-06-04T22:40:06.000Z (almost 2 years ago)
- Default Branch: master
- Last Pushed: 2024-07-04T04:42:42.000Z (almost 2 years ago)
- Last Synced: 2025-07-28T05:56:24.009Z (10 months ago)
- Topics: bnb-bitcoin, polyhedra, polyhedra-zk-oracle
- Language: Solidity
- Homepage: https://bitcoin-bnb-defi.vercel.app
- Size: 431 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
### Overview: Bitcoin <> BNB Chain DeFi Lending/Borrowing Platform
#### Introduction
This project involves developing a decentralized lending/borrowing platform leveraging the Bitcoin Oracle contract to facilitate interactions between the Bitcoin blockchain and BNB Chain. Users will be able to borrow assets from one blockchain and repay them on another, enhancing liquidity and financial flexibility.
#### Key Components
1. **Bitcoin Oracle Contract**: This contract serves as a bridge, allowing smart contracts on the BNB Chain to interact with Bitcoin block headers, enabling verification of Bitcoin transactions directly on-chain.
2. **Lending/Borrowing Smart Contracts**: These contracts will manage the lending and borrowing operations, ensuring seamless cross-chain transactions.
https://github.com/degenbuilder7/bitcoin-bnb-defi/blob/master/contracts/CrossChainDefi.sol
3. **User Interface**: A user-friendly interface for users to interact with the platform, including functionalities for lending, borrowing, and repaying assets.
### Bitcoin Oracle Contract Overview
The Bitcoin Oracle contract enables the interaction between the Bitcoin blockchain and EVM-compatible blockchains like BNB Chain. It provides on-chain verification of Bitcoin transactions without relying on external oracles, thus enhancing trust and decentralization.
#### Features
1. **Block Header Verification**: Allows submission and storage of Bitcoin block headers for on-chain verification.
2. **Proof of Work Validation**: Validates Bitcoin's Proof of Work to ensure trustless cross-chain interactions.
3. **Transaction Confirmation**: Verifies transactions using Merkle proofs.
4. **Chain Reorganization Handling**: Updates block headers to reflect the canonical chain in case of reorganization.
5. **Batch Header Processing**: Enables efficient submission of multiple headers.
6. **Finality Checks**: Ensures blocks have sufficient confirmations before being considered final.
7. **Canonical Chain Verification**: Flags blocks as part of the canonical chain for reliable data.
8. **Security-Oriented Design**: Enforces safety with methods to ensure only sufficiently confirmed blocks are used.
9. **Ethereum-Compatible Bitcoin Interactions**: Allows querying Bitcoin blockchain data from Ethereum applications.
### Platform Architecture
#### 1. Bitcoin Oracle Integration
- **Contract Deployment**: Deploy the Bitcoin Oracle contract on the BNB Chain to enable interaction with Bitcoin block headers.
- **Data Submission**: Implement mechanisms for users to submit Bitcoin block headers and transactions to the Oracle contract.
#### 2. Lending/Borrowing Smart Contracts
- **Asset Pooling**: Create pools for assets that users can lend or borrow.
- **Collateral Management**: Implement collateral requirements to secure loans and manage risk.
- **Interest Rates**: Define dynamic interest rates based on supply and demand.
- **Cross-Chain Repayment**: Enable users to repay loans on a different chain using verified Bitcoin transactions.
#### 3. User Interface
- **Dashboard**: Provide a dashboard for users to view available assets, their holdings, and current interest rates.
- **Lending/Borrowing Actions**: Allow users to lend assets, borrow against collateral, and repay loans.
- **Transaction History**: Display a history of all lending and borrowing transactions.
### Technical Implementation
#### Bitcoin Oracle Contract
1. **Deployment**
```bash
# Install Foundry
curl -L https://foundry.paradigm.xyz | bash
foundryup
# Deploy using Foundry
forge script script/Deploy.s.sol:DeployScript --rpc-url --private-key --broadcast --verify --etherscan-api-key
```
2. **Testing**
```bash
# Run Solidity tests with Foundry
forge test
# Run Python tests
anvil --fork-url
python3 test_py/dump_btc_headers.py
python3 test_py/submit.py
```
#### Lending/Borrowing Contracts
1. **Lending Pools**: Smart contracts managing lending pools for different assets.
2. **Collateral Management**: Contracts to manage collateral and ensure sufficient collateralization of loans.
3. **Interest Rates**: Dynamic calculation of interest rates based on current supply and demand metrics.
#### User Interface
1. **Web Application**: Develop a web application using frameworks like React or Angular.
2. **Blockchain Interaction**: Utilize web3.js or ethers.js to interact with the deployed smart contracts.
3. **User Experience**: Focus on providing a seamless experience for lending, borrowing, and repaying assets.
### Security and Integrity Measures
1. **Minimum Confirmations**: Enforce a minimum number of confirmations for blocks to be accepted as final.
2. **Reorganization Handling**: Update block headers to ensure the canonical chain is tracked.
3. **Proof of Work Validation**: Validate Bitcoin's Proof of Work to ensure trustless operations.
### Conclusion
By integrating the Bitcoin Oracle contract with a lending/borrowing platform on the BNB Chain, we are providing users with a new avenue for liquidity and financial flexibility. This platform will leverage on-chain verification of Bitcoin transactions, ensuring trust and decentralization while facilitating seamless cross-chain interactions.