> For the complete documentation index, see [llms.txt](https://darkorigin.gitbook.io/darkorigin-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://darkorigin.gitbook.io/darkorigin-docs/darkorigin-token-architecture.md).

# DarkOrigin Token Architecture

DarkOrigin Token is based on the concept of zk-Rollups, a Layer 2 scaling solution that enables off-chain computation while ensuring on-chain security. The architecture consists of the following components:

**Commitment Chain:** The commitment chain is the main Ethereum chain where the Layer 2 solution resides. DarkOrigin Token utilizes zk-Rollups to aggregate multiple transactions into a single transaction, thereby significantly reducing the on-chain load. Transactions are processed off-chain, and only the summarized data is submitted to the Ethereum mainnet, minimizing congestion and gas fees.

**Validity Chain:** The validity chain acts as a cryptographic proof layer for transactions processed on the Layer 2 solution. It ensures that the transactions executed off-chain are valid and secure. The validity chain is responsible for generating zk-SNARKs proofs that attest to the correctness of the off-chain computations, thus maintaining the trustless nature of the system.


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