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Chronicle Vesuvius

Chronicle Vesuvius is Lit Protocol's custom EVM rollup which is superseding the Chronicle blockchain, allowing for a more performant and stable backend for Lit's infrastructure.

About Chronicle Vesuvius

Chronicle Vesuvius is a custom EVM rollup using Arbitrum Orbit, designed specifically for Lit Protocol. This rollup is the primary platform for coordination, minting PKPs (programmable key pairs), and managing PKP Permissions. Note that PKPs minted on Chronicle Vesuvius can still sign transactions on any chain supported by Lit, including EVM, Cosmos, and Bitcoin.

tstLPX Test Token

The tstLPX test token serves as the gas for transactions on Chronicle Vesuvius. Please note that this is a test token with no real-world value. Its purpose is exclusively for testing and development on the Lit Protocol platform.

To obtain the tstLPX test token, please use the faucet. The tstLPX test token will be sent to your wallet address, allowing you to perform transactions on the rollup.

Keep in mind that the official Lit Protocol token is scheduled to launch sometime in the future. This will be the actual token with real-world utility within the ecosystem.

Connecting to Chronicle Vesuvius

To connect to Chronicle Vesuvius, you can click or manually add the network parameters below:


The below and additional chain facts are available here.

Parameter NameValue
Chain ID2311
NameChronicle Vesuvius - Lit Protocol Testnet
Block Explorer URL
Currency SymboltstLPX
Currency Decimals18

Note You must have the tstLPX test token in your wallet when minting a pkp, as it is used to pay the gas cost.

Block Explorer

A block explorer is available for Chronicle Vesuvius, providing valuable insights into the network. You can access it here. The explorer allows you to track transactions, addresses, and other essential data on the rollup.

Special Features

Chronicle Vesuvius includes BLS 12-381 precompiles, which means you can verify BLS signatures on-chain. This feature is not part of Ethereum yet and is only available on Chronicle Vesuvius.

Next Steps

Now that you've learned about Chronicle Vesuvius, you can write your first Lit Action that uses a PKP to sign! Learn how to do that here.


Not finding the answer you're looking for? Share your feedback on these docs by creating an issue in our GitHub Issues and Reports repository or get support by visiting our Support page.