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Polygon's AggLayer v0.2 mainnet launch brings Pessimistic Proofs, a novel security mechanism ensuring safe and flexible cross-chain interoperability across diverse blockchain networks.
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Polygon has unveiled a significant upgrade to its AggLayer with the introduction of Pessimistic Proofs on the mainnet. This development enhances the security and flexibility of cross-chain interoperability, allowing diverse blockchain networks to connect safely.
Pessimistic Proofs are zero-knowledge proofs that validate the correctness of bridge transitions and ensure the collateralization of all withdrawals. By assuming that each connected chain could potentially act maliciously, the system ensures that no single chain can withdraw more assets than it has deposited, safeguarding the unified bridge's integrity.
This mechanism enables chains with varying security models to interoperate without compromising the network's overall security. It treats all chains with a default level of skepticism, ensuring that any misbehavior by one chain does not affect the others.
The implementation of Pessimistic Proofs is facilitated by SP1, a general-purpose zkVM that supports standard Rust and uses Plonky3 as its proving system. This setup allows for efficient and secure generation of the necessary proofs to maintain the integrity of cross-chain interactions.
With Pessimistic Proofs live, AggLayer v0.2 enables greater flexibility for chains to connect, regardless of their underlying security models. This advancement lays the groundwork for AggLayer to support a multistack ecosystem, promoting a more unified and secure Web3 infrastructure.
๐ฅ๐ฒ๐ฎ๐ฑ ๐บ๐ผ๐ฟ๐ฒ: https://polygon.technology/blog/major-development-upgrade-for-a-multistack-future-pessimistic-proofs-live-on-agglayer-mainnet