> 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/creditcoin-usc/usc-operator-guides/per-chain-attestor-settings.md).

# Per-chain Attestor Settings

The attestor operator guide should be chain agnostic, supporting attestor setup on CC3 Mainnet or CC3 Testnet. To allow for this, we outline the resources for Mainnet and Testnet here.

<table><thead><tr><th width="159.95703125">Setting\Resource Name</th><th>For Mainnet</th><th>For Testnet</th></tr></thead><tbody><tr><td>Creditcoin Release Image (as of 07/08/26)</td><td><a href="https://hub.docker.com/repository/docker/gluwa/creditcoin3/tags/3.128.0-mainnet/sha256-705a4ff3b646576803809a54773806da55d133ab8571d7f973f9a483e84677c6">3.128.0-mainnet</a></td><td><a href="https://hub.docker.com/repository/docker/gluwa/creditcoin3/tags/3.128.0-testnet/sha256:765119b28628e0f4a604426778c9593df7e564e1bc103bdaac38b907ef4a78bc">3.128.0-testnet</a> </td></tr><tr><td>Eth Mainnet Chain Key</td><td>1</td><td>3</td></tr><tr><td>Public Creditcoin3 Rpc</td><td>wss://rpc.cc3-mainnet.creditcoin.network</td><td>wss://rpc.cc3-testnet.creditcoin.network</td></tr><tr><td>Polkadot.js Apps UI Link</td><td><a href="https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fmainnet3.creditcoin.network#/explorer">https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fmainnet3.creditcoin.network#/explorer</a></td><td><a href="https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frpc.cc3-testnet.creditcoin.network#/explorer">https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Frpc.cc3-testnet.creditcoin.network#/explorer</a></td></tr></tbody></table>