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| title | description |
|---|---|
| Testnets | An overview of public test networks that you can test Ocean Protocol applications against. |
You can test an Ocean Protocol application (such as a marketplace) against the test networks (testnets) described below.
The Kovan Testnet
The Kovan Testnet (or just "Kovan") is a public Ethereum testnet operated by members of the Ethereum community.
Kovan Blockchain Explorers
There are some Kovan blockchain explorers, e.g. Etherscan for Kovan and BlockScout for Kovan. You can use those to check the status of a transaction, the balance of an account, and more.
Keeper Contracts on Kovan
The Ocean Protocol keeper contracts (smart contracts) are deployed on Kovan. In fact, several versions of the keeper contracts have been deployed there. You can find the addresses of recently-deployed keeper contracts (including the OceanToken contract) as follows:
- Go to the list of keeper-contracts releases (Git tags) on GitHub.
- Click on the name of a release's Git tag in the left sidebar. It will look something like
v0.8.3. - Scroll down to the Kovan Testnet section of the README.md file. The contract addresses are listed there. Note: Sometimes there is a disconnect between the release number and the listed version number.
Note: Because Ocean Protocol uses ZeppelinOS to manage smart contract upgrades, a keeper contract address might not change over time (because it's just the address of the proxy contract) but the actually-used smart contract might change, along with its functionality.
At the time of writing, the contract address of the OceanToken contract in Kovan was:
0x963f52e2f4827ef82c56ad2eb81f650f66aeb267
Ocean Components Connected to Kovan
There is a Secret Store connected to the Kovan Testnet for use by Ocean Protocol projects (including your projects). It's operated by BigchainDB GmbH. Its URL is:
https://secret-store-kovan.dev-ocean.com/
Aside from the Secret Store, there is no other Ocean Protocol software component (e.g. Aquarius) that is live, connected to the Kovan testnet, and operated by BigchainDB GmbH.
The Nile Testnet
Formerly called the Ocean POA Testnet.
The Nile Testnet is similar to the Kovan Testnet, except all the nodes are operated by BigchainDB GmbH. If you want to connect to the Nile Testnet e.g. using MetaMask, then you must enter an "RPC URL" for the Nile Testnet. It is:
(You don't need to include the port number.)
Nile Blockchain Explorers
There is a Nile blockchain explorer at https://submarine.dev-ocean.com/. You can use it to check the status of a transaction, the balance of an account, and more. It uses the following symbols for Nile Ether and Ocean Tokens:
| Cryptocurrency | Symbol used |
|---|---|
| Nile Ether | POA |
| Nile Ocean Tokens | SBT-OCN |
Keeper Contracts on Nile
See the subsection about the Keeper Contracts on Kovan. The Nile contract addresses can be found in the same way.
At the time of writing, the contract address of the OceanToken contract in Nile was:
0x5b39858a450e8b51b5dcc598aafc4045c499d14f
Ocean Components Connected to Nile
There are several Ocean Protocol software components that are live, connected to the Nile testnet, and operated by BigchainDB GmbH:
- Secret Store at https://secret-store.dev-ocean.com
- Aquarius at https://nginx-aquarius.dev-ocean.com
- Brizo at https://nginx-brizo.dev-ocean.com
- Jupyter Hub at https://mantaray.dev-ocean.com
- Token Bridge Frontend (for a token bridge between Nile and Kovan) at https://token-bridge.dev-ocean.com
Internal note: The private "atlantic" repo documents the internal details of the Nile testnet in
networks/nile/README.md.
A Spree Testnet
When Ocean Protocol developers run Barge with the --local-spree-node option, a "Spree Testnet" node is deployed on their local machine: a local "testnet" not connected to any public testnet. It's named after the main river flowing through Berlin, Germany, where many Ocean Protocol developers are located.
Spree testnet details can be found in the Barge README.md file.