A novel idea, circulating on social media, proposes a system for merging data from various blockchains into a unified, ordered stream. This system would allow users to post data on any chain – such as Ethereum, Celestia, or Solana – with predefined rules ensuring a single, consistent sequence.

According to Anatoly Yakovenko, this "Meta Blockchain" would function by referencing the latest block headers from different data availability (DA) layers. Transactions (MetaTXs) posted on one chain would maintain their correct order relative to others. For example, a MetaTX on Solana would include the most recently observed blocks from Ethereum and Celestia, guaranteeing consistent sequencing across all chains.

This architecture would enable users to select the most cost-effective and fastest DA layer for their transactions, dramatically reducing operational costs. Yakovenko highlighted bandwidth as the primary constraint, stating that "Making data availability cheap allows for making everything else cheap."

The proposed approach minimizes reliance on centralized sequencers by employing deterministic merge rules. While a simpler version might utilize external sequencing, Yakovenko emphasized that a decentralized merge rule across all chains would better maintain trustlessness and interoperability.

This Meta Blockchain concept aligns with the industry's growing focus on modularity and scalability. It offers a vision of a future where blockchains interoperate seamlessly, empowering users to transact anywhere at minimal cost.

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