Anatoly Yakovenko’s meta blockchain is not intended to operate as a standalone blockchain layer but as a protocol-level aggregator that unifies data and transaction ordering across multiple chains.

Quotes that support claims

The proposed meta blockchain would not serve as a standalone layer but as an aggregator.

A lame version of this relies on an external sequencer. I think the cooler version is just a merge rule that reads all the chains. So users can send txs anywhere