# Band Protocol (Oracle)

Band Protocol offers oracles to dapp developers, including VRF functionality (verifiable random function).

Band Protocol feeds are primarily available via a "push" model.

Website: <https://www.bandprotocol.com/>

### Deployment status

### :white\_check\_mark: **Cronos zkEVM Mainnet (Chain-id : `388` )**

#### **Price oracle, supported symbols: $CRO, $ETH and $BTC:**

<table><thead><tr><th width="247">Contract name</th><th>Contract address</th></tr></thead><tbody><tr><td>StdReferenceProxy</td><td><a href="https://explorer.zkevm.cronos.org/address/0x4ef80a75ac964d9eb366263a065ed35c842efe40#code">0x4EF80A75AC964D9Eb366263A065ED35c842efE40</a></td></tr></tbody></table>

* Github reference: <https://github.com/bandprotocol/band-std-reference-contracts-solidity>

#### **VRF**:

<table><thead><tr><th width="244">Contract name</th><th>Contract address</th></tr></thead><tbody><tr><td>BridgeImplementation</td><td><a href="https://explorer.zkevm.cronos.org/address/0xe34164dc6c21dcd3281d74640003c2b5abfc132e#code">0xe34164dc6c21dcd3281d74640003c2b5abfc132e</a></td></tr><tr><td>Bridge</td><td><a href="https://explorer.zkevm.cronos.org/address/0x8d6a0d333236375fc3055cf40b5d1ed2dae8ca72#code">0x8d6a0d333236375fc3055cf40b5d1ed2dae8ca72</a></td></tr><tr><td>ProxyAdmin</td><td><a href="https://explorer.zkevm.cronos.org/address/0x2b04B94C6fbaC2a4a70fFEC6EFb5bd3521e7D11a#code">0x2b04B94C6fbaC2a4a70fFEC6EFb5bd3521e7D11a</a></td></tr><tr><td>VRFProviderV2</td><td><a href="https://explorer.zkevm.cronos.org/address/0x5EB8A226A06Ee633fEf49804362F2702cEbceA31#code">0x5EB8A226A06Ee633fEf49804362F2702cEbceA31</a></td></tr><tr><td>VRFLensV2</td><td><a href="https://explorer.zkevm.cronos.org/address/0x4fc5a465d763cEcc0c0b2CeF4e874aCb5B859dD8#code">0x4fc5a465d763cEcc0c0b2CeF4e874aCb5B859dD8</a></td></tr></tbody></table>

* Github reference: <https://github.com/bandprotocol/vrf-worker-v1>

***

### :white\_check\_mark: **Cronos zkEVM** Sepolia **Testnet (Chain-id : `240` )**

Price oracle, supported symbols: $CRO, $ETH and $BTC

* Proxy contract address: To be re-deployed
* Github reference: <https://github.com/bandprotocol/band-std-reference-contracts-solidity>

VRF:

| Contract name        | Contract address                                                                                                                                |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| BridgeImplementation | [0x9cb924A34ac2b5e1fA23522701616D2461BAd851](https://explorer.zkevm.cronos.org/testnet/address/0x9cb924a34ac2b5e1fa23522701616d2461bad851)      |
| ProxyAdmin           | [0x6ca84b102A240586Cb2cbCe9B113E6314984C126](https://explorer.zkevm.cronos.org/testnet/address/0x6ca84b102A240586Cb2cbCe9B113E6314984C126#code) |
| Bridge               | [0x4fc5a465d763cEcc0c0b2CeF4e874aCb5B859dD8](https://explorer.zkevm.cronos.org/testnet/address/0x4fc5a465d763cEcc0c0b2CeF4e874aCb5B859dD8#code) |
| VRFProviderV2        | [0x2b04B94C6fbaC2a4a70fFEC6EFb5bd3521e7D11a](https://explorer.zkevm.cronos.org/testnet/address/0x2b04B94C6fbaC2a4a70fFEC6EFb5bd3521e7D11a#code) |
| VRFLensV2            | [0x83814B902276755cf9c1Fcf7b74633DA49463162](https://explorer.zkevm.cronos.org/testnet/address/0x83814B902276755cf9c1Fcf7b74633DA49463162#code) |

* Github reference: <https://github.com/bandprotocol/vrf-worker-v1>