Midnight Mainnet Ledger 9 transition… contract calls use only public data

Midnight upgraded its mainnet ledger from Ledger 8 to Ledger 9 on the 6th, adding cross-contract calls within a single transaction, ECDSA signature verification, and Keccak-256 hashing. The new contract-call and event-indexing features are initially limited to public data and public events, with contract events now queryable through the indexer API. Private asset transfers were not introduced in this upgrade; Ledger 8.0.3, released March 20, already documented fixes to transaction construction that combined public and private transfers with contract calls. The change matters because it expands what developers can build on Midnight while keeping privacy-sensitive execution out of scope for now. What to watch next is whether cross-contract calls and event indexing extend beyond public data to private state in a subsequent ledger release.