# Bridging

The ZeroLabs Tokenization Module already supports multiple blockchains but with no bridging functionality. Our cross-chain bridging strategy will be **implemented in 3 stages**.

### Phase 0 - App-level

Initially, ZeroLabs supports multiple blockchains on the app-level only. We are able to tokenize Certificates on multiple blockchains, and users can show a preference to tokenizations on the blockchain of their choice.

More details can be found [here](https://docs.zerolabs.green/zerolabs-tokenization-module/domain-definitions/multi-chain-approach).

*Limitation: The Certificates are **non-bridgeable** between different blockchains.*

### Phase 1 - Centralized Bridging

ZeroLabs is currently working on a bridging solution to allow **cross-chain bridging liquidity** for different Certificates.

Certificates would be minted on a single (main) blockchain and then bridged to other blockchain when there's a demand for liquidity. Certificates claimed on a bridged chain will automatically be disabled/burned on the main blockchain.

This bridge will initially be **run by ZeroLabs** with the *possibility to be decentralized in the future*.

### Phase 2 - Decentralized Bridging

In the long-term, the ZeroLabs research team is focused on decentralizing the bridges and allowing the owners to bridge their own NFTs as they with and claim on whichever blockchain the bridge supports.