USL+Wormhole Integration
Last updated
Last updated
The Universal Settlement Layer (USL) is a service that validates claims. Users submit claims along with validity proofs to the USL. These claims and proofs are self-contained and can be independently verified by USL validators. Once verified, the claims are stored in the USL. Users can then query these verified claims and utilize them in other services.
Pi Squared’s USL is integrated as a Transceiver within the Wormhole’s Native Token Transfers (NTT) framework. While the initial build focuses on token transfers through NTT, the underlying principles and technologies of USL open avenues for broader applications across Web3.
To learn more about why we integrated USL with Wormhole as our first major integration, please read this blog, Pi Squared’s Integration with Wormhole NTT.
Wormhole’s NTT is an open, flexible, and composable framework for cross-chain token transfer without liquidity pools. The Wormhole NTT architecture features two attestation routes:
The default route is through the Guardian Network
A custom attestation route that has a customizable attestation component.
The customizable NTT protocol allows developers to specify which attestation method–or combination of methods–to use on the destination chain. The USL integration with the NTT protocol serves as a custom attestation method. The diagram below illustrates the NTT architecture, with the custom attestation route at the top and the default route at the bottom. For more information, see Wormhole's documentation.
