# Networks Ocean Protocol's smart contracts and [OCEAN](/discover/ocean-token.md) are deployed on multiple public networks: several production chains, and several testnets too. The file [`address.json`](https://github.com/oceanprotocol/contracts/blob/v4main/addresses/address.json) holds up-to-date deployment addresses for all Ocean contracts. On tokens: * You need the network's native token to pay for gas to make transactions: ETH for Ethereum mainnet, MATIC for Polygon, etc. You typically get these from exchanges. * You may get OCEAN from an exchange, and bridge it as needed. * For testnets, you'll need "fake" native tokens to pay for gas, and "fake" OCEAN. Typically, you get these from faucets. * Below, we give token-related instructions, for each network. ## Networks Summary Here are the networks that Ocean is deployed to. **Production Networks:** * Ethereum mainnet * Polygon mainnet * Oasis Sapphire mainnet * BNB Smart Chain * Energy Web Chain * Optimism (OP) Mainnet * Moonriver **Test Networks:** * Görli * Sepolia * Oasis Sapphire testnet * Optimism (OP) Sepolia The rest of this doc gives details for each network. You can skip it until you need the reference information. ## Production Networks ### Ethereum Mainnet | Native token | ETH | | ------------- | ------------------------------------------------------------------------------------------------------------------- | | OCEAN address | [0x967da4048cD07aB37855c090aAF366e4ce1b9F48](https://etherscan.io/token/0x967da4048cD07aB37855c090aAF366e4ce1b9F48) | | Explorer | | **Wallet.** To connect to Ethereum mainnet with e.g. MetaMask, click on the network name dropdown and select "Ethereum mainnet" from the list. ### Polygon Mainnet | Native token | MATIC | | ------------- | ---------------------------------------------------------------------------------------------------------------------- | | OCEAN address | [0x282d8efCe846A88B159800bd4130ad77443Fa1A1](https://polygonscan.com/token/0x282d8efce846a88b159800bd4130ad77443fa1a1) | | Explorer | | **Wallet.** If you can't find Polygon Mainnet as a predefined network, follow [Polygon's guide](https://wiki.polygon.technology/docs/develop/metamask/config-polygon-on-metamask/#add-the-polygon-network-manually). **Bridge.** Follow the [Polygon Bridge guide](/discover/bridges.md) in our docs. ### Oasis Sapphire Mainnet [Ocean Predictoor](/predictoor.md) is deployed on Oasis Sapphire mainnet for its ability to keep EVM transactions private. This deployment does do not currently support ocean.js, ocean.py, or Ocean Market. | Native token | ROSE | | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | OCEAN address | [0x39d22B78A7651A76Ffbde2aaAB5FD92666Aca520](https://explorer.oasis.io/mainnet/sapphire/token/0x39d22B78A7651A76Ffbde2aaAB5FD92666Aca520) | | Explorer | [https://explorer.oasis.io/mainnet/sapphire](https://explorer.oasis.io/mainnet/sapphire/) | **Wallet.** If you cannot find Oasis Sapphire Mainnet as a predefined network, fyou can manually connect by entering the following during import: Network Name: `Oasis Sapphire`, RPC URL: `https://sapphire.oasis.io`, Chain ID: `23294`, Token: `ROSE`. For further info, see [Oasis tokens docs](https://docs.oasis.io/general/manage-tokens/). **Bridge.** Use [Celer](https://cbridge.celer.network/1/23294/OCEAN) to bridge OCEAN from Ethereum mainnet to Oasis Sapphire mainnet. ### BNB Smart Chain | Native token | BSC BNB | | ------------- | ------------------------------------------------------------------------------------------------------------------ | | OCEAN address | [0xdce07662ca8ebc241316a15b611c89711414dd1a](https://bscscan.com/token/0xdce07662ca8ebc241316a15b611c89711414dd1a) | | Explorer | | This is one of the [Binance](https://binance.com)-spawned chains. BNB is the token of Binance. **Wallet.** If BNB Smart Chain is not listed as a predefined network in your wallet, see [Binance's Guide](https://academy.binance.com/en/articles/connecting-metamask-to-binance-smart-chain) to manually connect. **Bridge.** Our [BNB Smart Chain Bridge Guide](/discover/bridges.md#bnb-smart-chain-bridge) describes how to get OCEAN to BNB Smart Chain. ### Energy Web Chain (EWC) | Native token | Energy Web Chain EWT | | ------------- | ----------------------------------------------------------------------------------------------------------------------------- | | OCEAN address | [0x593122aae80a6fc3183b2ac0c4ab3336debee528](https://explorer.energyweb.org/token/0x593122aae80a6fc3183b2ac0c4ab3336debee528) | | Explorer | | This is the chain for [Energy Web Foundation](https://www.energyweb.org/). **Wallet.** If you cannot find Energy Web Chain as a predefined network in your wallet, you can manually connect to it by following this [guide](https://energy-web-foundation.gitbook.io/energy-web/how-tos-and-tutorials/connect-to-energy-web-chain-main-network-with-metamash). **Bridge.** To bridge assets between Ethereum Mainnet and Energy Web Chain and Ethereum mainnet, you can use [Omni bridge by Carbonswap](https://bridge.carbonswap.exchange/). ### Optimism (OP) Mainnet | Native token | ETH | | ------------- | -------------------------------------------------------------------------------------------------------------------------------- | | OCEAN address | [0x2561aa2bB1d2Eb6629EDd7b0938d7679B8b49f9E](https://optimistic.etherscan.io/address/0x2561aa2bB1d2Eb6629EDd7b0938d7679B8b49f9E) | | Explorer | | **Wallet.** If you cannot find Optimism as a predefined network in your wallet, you can manually connect to with [this OP guide](https://community.optimism.io/docs/useful-tools/networks/#op-mainnet). **Bridge.** Follow the [OP Bridge guide](https://docs.optimism.io/builders/dapp-developers/bridging/standard-bridge). ### Moonriver | Native token | Moonriver MOVR | | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ | | OCEAN address | [0x99C409E5f62E4bd2AC142f17caFb6810B8F0BAAE](https://blockscout.moonriver.moonbeam.network/token/0x99C409E5f62E4bd2AC142f17caFb6810B8F0BAAE/token-transfers) | | Explorer | | [Moonriver](https://moonbeam.network/networks/moonriver/) is an EVM-based parachain of Kusama. **Wallet.** If Moonriver is not listed as a predefined network in your wallet, you can manually connect to it by following [Moonriver's guide](https://docs.moonbeam.network/builders/get-started/networks/moonriver/#connect-metamask). **Bridge.** To bridge assets between Moonriver and Ethereum mainnet, you can use the [Celer](https://cbridge.celer.network/bridge/moonriver-ethereum/). ## Test Networks Unlike production networks, tokens on test networks do not hold real economic value. ### Sepolia | Native token | Sepolia (fake) ETH | | ------------------- | ----------------------------------------------------------------------------------------------------------------------------- | | Native token faucet | [Here](https://sepoliafaucet.com/) | | OCEAN address | [0x1B083D8584dd3e6Ff37d04a6e7e82b5F622f3985](https://sepolia.etherscan.io/address/0x1B083D8584dd3e6Ff37d04a6e7e82b5F622f3985) | | OCEAN faucet | [Here](https://faucet.sepolia.oceanprotocol.com/) | | Explorer | [https://sepolia.etherscan.io](https://sepolia.etherscan.io/) | **Wallet.** To connect with e.g. MetaMask, select "Sepolia" from the network dropdown list(enable "Show test networks"). ### Oasis Sapphire Testnet [Ocean Predictoor](/predictoor.md) is deployed on Oasis Sapphire testnet. This deployment does do not currently support ocean.js, ocean.py, or Ocean Market. | Native token | (fake) ROSE | | ------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | Native token faucet | [Here](https://github.com/oceanprotocol/pdr-backend/blob/main/READMEs/testnet-faucet.md#get-fake-rose-on-sapphire-testnet) | | OCEAN address | [0x973e69303259B0c2543a38665122b773D28405fB](https://explorer.oasis.io/testnet/sapphire/address/0x973e69303259B0c2543a38665122b773D28405fB) | | OCEAN faucet | [Here](https://github.com/oceanprotocol/pdr-backend/blob/main/READMEs/testnet-faucet.md#get-fake-ocean-on-sapphire-testnet) | | Explorer | [https://explorer.oasis.io/testnet/sapphire](https://explorer.oasis.io/testnet/sapphire/) | **Wallet.** If you cannot find Oasis Sapphire Testnet as a predefined network, you can manually connect to it by entering the following during import: Network Name: `Oasis Sapphire Testnet`, RPC URL: `https://testnet.sapphire.oasis.dev`, Chain ID: `23295`, Token: `ROSE`. For further info, see [Oasis tokens docs](https://docs.oasis.io/general/manage-tokens/). ### Optimism (OP) Sepolia | Native token | Sepolia (fake) ETH | | ------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | | Native token faucet | [Here](https://faucet.quicknode.com/optimism/sepolia) | | OCEAN address | [0xf26c6C93f9f1d725e149d95f8E7B2334a406aD10](https://sepolia-optimism.etherscan.io/address/0xf26c6c93f9f1d725e149d95f8e7b2334a406ad10) | | OCEAN faucet | [Here](https://faucet.op-sepolia.oceanprotocol.com/) | | Explorer | [https://sepolia-optimism.etherscan.io](https://sepolia-optimism.etherscan.io/) | **Wallet.** If OP Sepolia is not listed as a predefined network, follow [OP's Guide](https://community.optimism.io/docs/useful-tools/networks/#op-sepolia). *** *Next:* [*Bridges*](/discover/bridges.md) *Back:* [*OCEAN: the Ocean token*](/discover/ocean-token.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.oceanprotocol.com/discover/networks.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.