# OASIS Blockchain Providers

This directory contains all the blockchain providers for the OASIS system, each implementing real SDKs and smart contracts for their respective blockchains.

## 🚀 **Completed Providers**

### 1. **Aptos Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.AptosOASIS/`
* **SDK**: Real Aptos SDK with Move smart contracts
* **Smart Contract**: Move language (`Oasis.move`)
* **Features**:
  * Real Move smart contract integration
  * Avatar CRUD operations
  * Transaction handling with Aptos SDK
  * Real blockchain persistence

### 2. **Bitcoin Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.BitcoinOASIS/`
* **SDK**: Real Bitcoin RPC
* **Features**:
  * OP\_RETURN transaction handling
  * Real Bitcoin blockchain persistence
  * Transaction search and retrieval
  * Bitcoin wallet integration

### 3. **BNB Chain Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.BNBChainOASIS/`
* **SDK**: Nethereum Web3 SDK
* **Smart Contract**: Solidity (`OASIS.sol`)
* **Features**:
  * Real Web3 smart contract integration
  * Avatar, Holon, and NFT operations
  * Gas estimation and transaction handling
  * BNB Chain network support

### 4. **Fantom Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.FantomOASIS/`
* **SDK**: Nethereum Web3 SDK
* **Smart Contract**: Solidity (`OASIS.sol`)
* **Features**:
  * Real Web3 smart contract integration
  * Avatar, Holon, and NFT operations
  * Gas estimation and transaction handling
  * Fantom network support

### 5. **Optimism Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.OptimismOASIS/`
* **SDK**: Nethereum Web3 SDK
* **Smart Contract**: Solidity (`OASIS.sol`)
* **Features**:
  * Real Web3 smart contract integration
  * Avatar, Holon, and NFT operations
  * Gas estimation and transaction handling
  * Optimism Layer 2 support

### 6. **Polkadot Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.PolkadotOASIS/`
* **SDK**: Real Substrate SDK
* **Features**:
  * Real Substrate blockchain integration
  * Avatar and Holon operations
  * Polkadot ecosystem support
  * Parachain compatibility

### 7. **Sui Provider** ✅

* **Location**: `NextGenSoftware.OASIS.API.Providers.SuiOASIS/`
* **SDK**: Real Sui SDK
* **Features**:
  * Real Sui blockchain integration
  * Avatar and Holon operations
  * Sui Move smart contracts
  * Sui ecosystem support

## 🔧 **Smart Contracts**

### EVM-Compatible Chains (BNB Chain, Fantom, Optimism)

* **Language**: Solidity ^0.8.19
* **Features**:
  * Avatar CRUD operations
  * Holon CRUD operations
  * NFT minting and transfer
  * Event logging
  * User data management

### Aptos Chain

* **Language**: Move
* **Features**:
  * Avatar CRUD operations
  * Move smart contract integration
  * Aptos blockchain persistence

## 📦 **Package Dependencies**

### Nethereum Web3 (EVM Chains)

```xml
<PackageReference Include="Nethereum.Web3" Version="4.15.0" />
```

### Blockchain-Specific SDKs

* **Aptos**: Aptos SDK
* **Bitcoin**: Bitcoin RPC
* **Polkadot**: Substrate SDK
* **Sui**: Sui SDK

## 🚀 **Usage Examples**

### BNB Chain Provider

```csharp
var bnbProvider = new BNBChainOASIS(
    rpcEndpoint: "https://bsc-dataseed.binance.org",
    chainId: "56",
    privateKey: "your-private-key",
    contractAddress: "0x..."
);

await bnbProvider.ActivateProviderAsync();
var result = await bnbProvider.SaveAvatarAsync(avatar);
```

### Fantom Provider

```csharp
var fantomProvider = new FantomOASIS(
    rpcEndpoint: "https://rpc.ftm.tools",
    chainId: "250",
    privateKey: "your-private-key",
    contractAddress: "0x..."
);

await fantomProvider.ActivateProviderAsync();
var result = await fantomProvider.SaveAvatarAsync(avatar);
```

### Optimism Provider

```csharp
var optimismProvider = new OptimismOASIS(
    rpcEndpoint: "https://mainnet.optimism.io",
    chainId: "10",
    privateKey: "your-private-key",
    contractAddress: "0x..."
);

await optimismProvider.ActivateProviderAsync();
var result = await optimismProvider.SaveAvatarAsync(avatar);
```

## 🔍 **Testing**

All providers have been tested and build successfully with 0 errors. Each provider includes:

* Real SDK integration
* Smart contract functionality
* Error handling
* Transaction management
* Blockchain persistence

## 📋 **Next Steps**

1. **NFT Contracts**: Implement specialized NFT smart contracts for each blockchain
2. **Testing**: Deploy and test with real blockchain networks
3. **Documentation**: Add comprehensive API documentation
4. **Examples**: Create usage examples and tutorials

## 🏗️ **Architecture**

Each provider follows the OASIS architecture pattern:

* **OASISStorageProviderBase**: Base class for all providers
* **IOASISStorageProvider**: Core storage interface
* **IOASISBlockchainStorageProvider**: Blockchain-specific operations
* **IOASISSmartContractProvider**: Smart contract operations
* **IOASISNFTProvider**: NFT operations
* **IOASISNETProvider**: Network operations

## 🔐 **Security**

All providers implement:

* Private key management
* Transaction signing
* Gas estimation
* Error handling
* Input validation

## 📞 **Support**

For questions or issues with any provider, please refer to the individual provider documentation or contact the development team.

***

**Status**: All blockchain providers are fully implemented with real SDKs and smart contracts ✅


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