🔴Alt-DA Mode is now available for the OP Stack in beta! 🔴

Any DA layer can now build their own DA server to integrate into the OP Stack. 

Three of the most popular decentralized DA layers have already launched, and OP Stack Chain devs can use @celestia DA, Eigen DA and @availproject  DA as the DA layer.

The first modular blockchain network that makes it easy for anyone to securely launch their own blockchain. Build whatever 👉 https://celestia.org/build/

A robust base layer designed to meet the needs of next-generation trust-minimized applications and sovereign rollups

availproject.org

🔴✨ Trusted by developers, rebels, and Fortune 500's. Scaling Ethereum & its values.

Optimism.io

Alt-DA Mode builds off of @lattice’s core contributions. 

@redstone was the first chain to leverage the initial release of Alt-DA Mode with DA Challenges, a Plasma-inspired feature that allows OP Stack Chains to submit transaction batches to a centralized DA layer while allowing those batches to be challenged onchain.

@celestia is a permissionless, high-throughput data availability network that makes it easy for anyone to securely launch their own blockchain. 

15 OP Stack Chains are already live with Celestia underneath.

Eigen DA is a scalable data availability service built on the EigenLayer restaking protocol. 

EigenDA offers security derived from restaked ETH, a roadmap to gigabytes of throughput, and the ability to stake custom tokens to secure your rollups.

Thanks to the EigenDA team for contributing to op-batcher to support generic DA commitment types.

@AvailProject’s Avail DA is a zk-powered base layer that scales infinitely with demand. It provides immediate, reliable data integrity as well as unification with the rest of web3.

Alt-DA Mode is still in its initial stage, but we're excited to scope out new features like:

- DA Challenges for all DA layers (not just DA with keccak commitments)
- Switching between DA layers
- Integration with fault proofs
- Interface for any DA layer to integrate their DA bridge for improved decentralization

Thanks to Alt-DA Mode's modularity, any DA layer can now easily integrate with the OP Stack.

Here is a guide for any DA layer to build their own DA server to allow anyone to deploy a chain that posts and reads data from their DA layer:

Thanks to Alt-DA Mode's modularity, any DA layer can now easily integrate with the OP Stack.

Here is a guide for any DA layer to build their own DA server to allow anyone to deploy a chain that posts and reads data from their DA layer: 
https://shorturl.at/LWHxp

Features in beta are built and reviewed by the Optimism Collective’s core contributors, and provide developers with early access to highly requested configurations. 

These features may experience stability issues, and we encourage feedback from our early users.

Deploy a low-cost OP Stack Chain with a customized data availability layer, while maintaining future compatibility with improvements to the OP Stack and Alt-DA Mode. 

Explainer: https://shorturl.at/U1iMa
Technical details:

Deploy a low-cost OP Stack Chain with a customized data availability layer, while maintaining future compatibility with improvements to the OP Stack and Alt-DA Mode. 

Explainer: https://shorturl.at/U1iMa
Technical details: https://shorturl.at/DbcDU

Alt-DA Mode protects chains from increased costs in the event that 4844 blobspace becomes congested in the future while aiming to minimize tradeoffs to security and decentralization. 

This release of Alt-DA Mode gives chain operators the freedom to choose whichever DA layer they believe has the best tradeoffs of security, decentralization, and cost.