FAQs

This page is divided between General FAQs and Developer FAQs.

General FAQs

What is Taiko?

What is a Type 1 ZK-EVM?

The different types of ZK-EVMs make tradeoffs between compatibility and proof generation cost. A Type 1 ZK-EVM prioritizes compatibility over proof generation cost.

Another term for a Type 1 ZK-EVM is “Ethereum-equivalent”. This term comes from the fact that Type 1 ZK-EVMs make no changes to the Ethereum architecture, whether it be the hash function, state trees, or gas costs. This equivalency allows us to reuse execution clients with minimal modification.

Is Taiko open source?

Yes, Taiko is open source under the permissive MIT license (free to access and modify). The Geth fork (taiko-geth) retains the original Geth GPL licenses.

Can I ignore these logs from my node?

Join the Discord (#errors-faq channel) to see the node logs that can be ignored and which are errors.

Where can I find the deployed contract addresses for Hekla?

See deployed contracts for a list of deployed contract addresses.

Where can I find the deployed contract addresses for Mainnet?

See deployed contracts for a list of deployed contract addresses.

I ran a node during a previous testnet do I need to do anything different?

Yes, please update your simple-taiko-node and run through one of the profiles described in the guides. You can also shut down your Taiko (Katla) node and run a Taiko (Hekla) node. Check out our guides in the sidebar.

Does Taiko have a sequencer?

Taiko does not have an L2 sequencer, since everyone can become a proposer permissionlessly. Ultimately the L1 Ethereum validator for the current block is the sequencer that can sequence multiple L2 blocks. This is also referred to as a based rollup.

How do I get ETH on the Taiko Hekla network?

You can use the official Taiko bridge to send your ETH from the Holesky network to the Taiko Hekla network.

Developer FAQs

How can I get the L1 block number from L2 on Testnet?

You can check the last synced L1 block height in the TaikoL2 contract here. You can do the same for Mainnet.