How to Use the Testnet App

First we need to install and setup the Metamask extension. After installation, add a custom RPC endpoint for the Harmony ONE testnet:
Then fill out the endpoint information:
Field
Value
Network Name
Harmony Testnet
New RPC URL
https://api.s0.b.hmny.io
Chain ID
1666700000
Currency Symbol
ONE
Block Explorer URL
Finally, click "Save" and you're done!
Now you can use https://app.tranquil.finance

You can get some ONE tokens to use on through the official faucet at https://faucet.pops.one/
Note that Metamask displays your wallet address in the ETH format, but the faucet expects your address in the ONE format.
To convert your address, simply paste your address in https://explorer.harmony.one/ and copy the ONE address.

The Tranquil protocol on the testnet uses custom tokens for testing purposes. To get some from the faucet, simply click the TESTNET button in the header.
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On this page
Setting up Metamask
Testnet ONE Faucet
Testnet Assets Faucet