> For the complete documentation index, see [llms.txt](https://docs.zkbob.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zkbob.com/roadmap/exploratory-features/multi-chain-custom-rollup-deployment.md).

# Multi-chain Custom Rollup Deployment

zkBob v2 will support a multi-chain deposit/withdrawal environment. Users will be able to initiate a private deposit and receive a withdrawal from their choice of supported chains. 

Once initiated, shielded transactions will be relayed and deposited into a single consolidated zkpool deployment on an EVM chain of record. Rather than small pools with small anonymity sets deployed to each chain, a single pool fed by multiple cross-chain deposits will vastly increase anonymity for all users and provide the opportunity for faster anonymous withdrawals.

v2 will be deployed within a custom optimistic rollup-based framework. Rollups will be based on Optimism with customizations to support multi-chain assets and hybrid-chain deployment.

### Features

* Deposit contracts deployed to custom rollups on multiple EVM networks. 
* Pool & Verifier contracts deployed on a single chain to optimize gas usage and consolidate resources into a single zkpool.
* zkBob contracts will be deployed on rollups as precompiles to increase tx/sec.
* Fast exits enabled via state-channel bridges.
  * Bridged stable assets can also be leveraged in compounding protocols to earn additional yield.
* Potential whitelisting capabilities.