Meta-chain proposal from Solana's Toly:
A coordination layer that posts data to multiple DA providers ( #Ethereum #Celestia #Solana etc ) and merges it into a single canonical sequence 🧬
💭The concept:
- Dynamically select the cheapest data availability layer
- Enforce global ordering by referencing latest block headers from all sources
- Enable modular scalability without binding to a single chain
🗣️Key assumptions:
- Timely and honest publication of external headers
- Consistent latency across domains
- No shared security or consensus mechanism
- Vulnerability to DA withholding or manipulation remains unaddressed
This model abstracts away from traditional chain architecture - shifting trust from a unified consensus to a composition of external proofs. Elegant in theory, but fragile if any component underperforms.
