> For the complete documentation index, see [llms.txt](https://docs.creditcoin.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.creditcoin.org/usc/quickstart/environments.md).

# Environments

### CC3 Testnet - Recommended

<table data-header-hidden><thead><tr><th width="265.0001220703125">Resource</th><th width="483">Specification</th></tr></thead><tbody><tr><td>Please refer to cc3 testnet documentation</td><td><a href="https://docs.creditcoin.org/environments/testnet">https://docs.creditcoin.org/environments/testnet</a></td></tr><tr><td>Chain key (Sepolia)</td><td>1</td></tr><tr><td>Attestors Dashboard</td><td><a href="https://dashboard.cc3-testnet.creditcoin.network/">https://dashboard.cc3-testnet.creditcoin.network/</a></td></tr><tr><td>USC SDK js</td><td><a href="
https://www.npmjs.com/package/@gluwa/usc-sdk">
<br>https://www.npmjs.com/package/@gluwa/usc-sdk</a></td></tr><tr><td>Proof generator api</td><td><p><a href="https://prover.cc3-testnet.creditcoin.network/

or
[https://proof-gen-api.cc3-testnet.creditcoin.network/">https://prover.cc3-testnet.creditcoin.network/](https://proof-gen-api.cc3-testnet.creditcoin.network/">https://prover.cc3-testnet.creditcoin.network/)</a></p><p>or\<a href="<https://prover.cc3-testnet.creditcoin.network/>

or
[https://proof-gen-api.cc3-testnet.creditcoin.network/">](https://proof-gen-api.cc3-testnet.creditcoin.network/">) <br><https://proof-gen-api.cc3-testnet.creditcoin.network/></a></p></td></tr><tr><td>Precompile</td><td><a href="https://creditcoin-testnet.blockscout.com/address/0x0000000000000000000000000000000000000FD2?tab=contract"><https://creditcoin-testnet.blockscout.com/address/0x0000000000000000000000000000000000000FD2?tab=contract></a></td></tr><tr><td>For more cc3 testnet blockchain values</td><td><a href="https://docs.creditcoin.org/environments/testnet#connecting-to-testnet"><https://docs.creditcoin.org/environments/testnet#connecting-to-testnet></a></td></tr></tbody></table>

### USC Testnet v2 - Deprecated on 2026-05-27

<table data-header-hidden><thead><tr><th>Resource</th><th width="483">Specification</th></tr></thead><tbody><tr><td>Chain key (Sepolia)</td><td>1</td></tr><tr><td>Blockscout (EVM Explorer)</td><td><a href="https://explorer.usc-testnet2.creditcoin.network/">Creditcoin3 USC Testnet blockchain explorer | Blockscout</a></td></tr><tr><td>PolkadotJS Apps</td><td><a href="https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frpc.usc-testnet2.creditcoin.network%2Fws#/explorer">Polkadot/Substrate Portal</a><br>or Select <code>Development</code> > <code>Custom</code> > and <br>type in <code>wss://rpc.usc-testnet2.creditcoin.network/ws</code> </td></tr><tr><td>Attestors Dashboard</td><td><a href="https://dashboard.usc-testnet2.creditcoin.network/ ">https://dashboard.usc-testnet2.creditcoin.network/ </a></td></tr><tr><td>RPC</td><td><code>https://rpc.usc-testnet2.creditcoin.network</code></td></tr><tr><td>EVM ChainId</td><td>102036</td></tr><tr><td>Min Join Pool Bond</td><td>0</td></tr><tr><td>Min Solo Nominator Bond</td><td>19500 tCTC</td></tr><tr><td>Min Pool Creation Bond</td><td>19500 tCTC</td></tr><tr><td>Discord Faucet Link</td><td><a href="https://discord.com/channels/762302877518528522/1463257679827828962">Faucet channel</a></td></tr></tbody></table>