Ledger 9 lets Midnight contracts call one another on unshielded data and gives developers built-in hashing and signature checks.
Under Ledger 9, one smart contract can call another, although the feature is initially restricted to unshielded data. Developers can now use Keccak-256 hashing and built-in ECDSA signature checks on Ledger 9.
The tools target developers creating services for private deposits of assets originating on external blockchain networks.



