A little bit of chit-chat
Union announced a partnership with Scroll, allowing zero-knowledge messaging and asset transfers between Scroll’s zk-EVM and all IBC-enabled chains. Currently, Scroll ranks 16th among L2s in Ethereum.
Rollchains?
Strangelove's introduction of rollchains enables Cosmos L1 blockchains to post data to Celestia, aiming to enhance interoperability and data accessibility within the interchain. This technology allows for direct data posting to Celestia by entities such as Stride Zone, which plans to be the first to implement this new module. The objective is to make blockchain data accessible for Celestia rollups, facilitating easier integration of assets across platforms.
Rollchains, conceptualized as modularized Cosmos L1 blockchains, post data blobs to Celestia for several purposes, including ensuring transaction history integrity, exposing chain data to indexers, aiding in node bootstrapping, and block synchronization. This approach combines Cosmos L1 blockchains' features with rollup technology to utilize Celestia's data availability services while retaining flexibility in validator set selection. It supports various consensus mechanisms like IBC protocols, Proof of Authority (PoA), and Proof of Stake (PoS), among others.
A discussion on the official X thread highlighted inquiries regarding the utility of posting data to Celestia. Responses indicated that for PoA chains or those with smaller validator sets, such data posting provides an additional assurance layer for transaction history integrity. Moreover, making chain data available to Celestia indexers is seen as foundational for developing shared services atop Celestia's data platform, which, although in the early development stages, is expected to evolve. As for node bootstrapping and block synchronization, pushing complete state snapshots to Celestia might be expensive and impractical. Instead, the focus is on facilitating nodes to catch up from lagging by accessing block data from Celestia.
The official thread mentioned that the rollchain module will soon be available for integration by any Cosmos SDK chain.
Privacy meets Modularity
Fairblock recently announced the launch of its first public testnet, FairyRing, introducing a new option for app developers in the Cosmos ecosystem, with plans to extend support to Arbitrum, Optimism, and Celestia ecosystems. This initiative allows developers to test programmable privacy features within their applications, offering a modular approach to privacy. Fairblock's methodology is designed to provide encryption tools within developers' preferred environments, aiming to broaden the application possibilities for blockchain protocols by incorporating privacy measures to protect user data.
FairyRing facilitates the use of advanced encryption technologies such as identity-based encryption (IBE), witness encryption (WE), and plans for fully homomorphic encryption (FHE). These technologies enable the encryption of transactions on the application frontend before submission to the blockchain, with transactions remaining encrypted until predefined on-chain conditions for decryption are satisfied. This capability is intended to support a variety of applications, including but not limited to, encrypted limit orders, private governance mechanisms, and trustless cross-chain bridges.
The FairyRing chain, pivotal to Fairblock's approach to privacy, relies on a validator set for decentralized generation of decryption keys, thus allowing applications to integrate privacy features without significant increases in computational demand.
Wrap Up
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