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| title | description |
|---|---|
| Testnets | An overview of public test networks that you can test Ocean Protocol applications against. |
This page is a brief overview of available testnets. The tutorials cover more details (e.g. how to connect to specific ones).
A Spree Testnet (for Local Development)
By default, Barge will deploy a local Spree Testnet1 on your machine: a local testnet not connected to any external public testnet.
When running a Spree Testnet, you can connect to a node at RPC URL http://localhost:8545 (called "Localhost 8545" in MetaMask).
Spree Testnet details can be found in the Barge README.md file. You can configure the Spree nodes by editing the files in the barge/networks/spree/ directory.
Spree testnets are named after the Spree River, the main river flowing through Berlin, Germany, where many Ocean Protocol developers are located.
The Nile Testnet
In the Nile Testnet2 all nodes are operated by BigchainDB GmbH.
For developers building on Ocean Protocol, we recommend starting with a Spree Testnet.
Connect to the Nile Testnet
See Tutorial: Connect to the Nile Testnet.
Nile Blockchain Explorers
There is a Nile blockchain explorer at https://submarine.nile.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 Nile Ocean Tokens:
| Cryptocurrency | Symbol used |
|---|---|
| Nile Ether | POA |
| Nile Ocean Tokens | OCEAN or SBT-OCN |
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:
| Component | URL |
|---|---|
| Node | https://nile.dev-ocean.com |
| Secret Store | https://secret-store.nile.dev-ocean.com |
| Aquarius Test instance | https://aquarius.nile.dev-ocean.com |
| Brizo Test instance | https://brizo.nile.dev-ocean.com |
| Aquarius for Commons | https://aquarius.marketplace.dev-ocean.com |
| Brizo for Commons | https://brizo.marketplace.dev-ocean.com |
| Commons Marketplace | https://commons.nile.dev-ocean.com |
| Jupyter Hub | https://mantaray.dev-ocean.com |
| Faucet Server | https://faucet.nile.dev-ocean.com |
Internal note: The private "atlantic" repo documents the internal details of the Nile Testnet in
networks/nile/README.md.
Using Barge with Nile
If you run Barge with the --local-nile-node option, then Barge will run a Nile node on your local machine (along with everything else Barge runs).
There might be many blocks in the Nile Testnet's blockchain, so it might take a long time for your local Nile node to sync, i.e. to download a local copy of all the blocks. In the meantime, the local Nile node won't be able to do certain things.
A Ganache-Based Testnet (for Local Development)
A local testnet similar to Spree but launched by using the --local-ganache-node option with Barge.
You shouldn't use a Ganache-Based Testnet unless you know why you're doing so. For example, a Ganache-based testnet can be used to test some smart contracts, but it can't be used with a Secret Store.