Ledger

The ledger in Midnight is a public record of contract states and token states, consisting of Zswap’s cryptographic commitments and a mapping of contract addresses to their respective states.

Link to related documentation

To download the component, click the appropriate link under Artifacts.

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VersionAll4.0.03.0.6

StatusAllLATESTDEPRECATED

Release 4.0.0LATEST

12 May 2025

Artifacts

• Ledger
• Zswap
• Onchain Runtime

Summary

• Integrated with the new storage model, making required objects Storable to allow storing MPT leafs as Sps.
• Added segment IDs to Zswap constructors. These should be set to 1 for fallible offers, and 0 for guaranteed offers.
• Renamed ZswapLocalStateNoKeys to ZswapLocalState, removing the existing (with keys) state.
• Switch from Pluto-Eris to BLS12-381.
• Switched to using data providers instead of direct prover keys and parameters.
• Add a data provider to fetch key material for Midnight. The source of this may be overridden with the MIDNIGHT_PARAM_SOURCE environment variable.