Struct OrchardBundleParams 

pub struct OrchardBundleParams {
    pub actions: Vec<SerializedAction>,
    pub anchor: [u8; 32],
    pub proof: Vec<u8>,
    pub binding_signature: [u8; 64],
}

Common Orchard bundle parameters shared across all shielded transition types.

Groups the fields that every shielded transition carries identically: the serialized actions, Sinsemilla anchor, Halo 2 proof, and RedPallas binding signature. Using this struct reduces parameter counts in SDK helper functions from 10-12 down to 5-8.

Fields

actions: Vec<SerializedAction>

The serialized Orchard actions (spends + outputs).

anchor: [u8; 32]

Sinsemilla root of the note commitment tree at bundle creation time (32 bytes). This is the Orchard Anchor — the root of the depth-32 Sinsemilla Merkle tree over extracted note commitments (cmx values), NOT the GroveDB commitment tree state root.

proof: Vec<u8>

Halo 2 zero-knowledge proof bytes.

binding_signature: [u8; 64]

RedPallas binding signature (64 bytes) over the bundle’s value balance.