> For the complete documentation index, see [llms.txt](https://docs.witnesschain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.witnesschain.com/archive/proof-of-diligence-watchtower-protocol/chains-watched.md).

# Chains watched

| L2 Chains Watching                   |
| ------------------------------------ |
| Optimism-Sepolia : Chain ID 11155420 |
| Base-Sepolia : Chain ID 84532        |
|                                      |