Struct SignBidirectionalEvent 

pub struct SignBidirectionalEvent {
    pub sender: Pubkey,
    pub serialized_transaction: Vec<u8>,
    pub caip2_id: String,
    pub key_version: u32,
    pub deposit: u64,
    pub path: String,
    pub algo: String,
    pub dest: String,
    pub params: String,
    pub program_id: Pubkey,
    pub output_deserialization_schema: Vec<u8>,
    pub respond_serialization_schema: Vec<u8>,
}

Emitted when a bidirectional cross-chain request is made via chain_signatures::sign_bidirectional.

Event Type

CPI event (emitted via emit_cpi!)

Usage

The MPC network listens for this event to:

1. Sign the transaction and call chain_signatures::respond
2. Store the pending tx in backlog for observation
3. Monitor destination chain for confirmation
4. Call chain_signatures::respond_bidirectional with results

Fields

sender: Pubkey

Solana address of the requester.

serialized_transaction: Vec<u8>

RLP-encoded unsigned transaction for the destination chain.

caip2_id: String

CAIP-2 chain identifier of the destination (e.g., “eip155:1” for Ethereum).

key_version: u32

MPC key version used for signing.

deposit: u64

Deposit amount paid in lamports.

path: String

Derivation path for the user’s signing key.

algo: String

Signing algorithm (e.g., “secp256k1”).

dest: String

Response destination identifier.

params: String

Additional JSON parameters.

program_id: Pubkey

Callback program ID (reserved for future use).

output_deserialization_schema: Vec<u8>

Schema for parsing destination chain call output (JSON-encoded).

respond_serialization_schema: Vec<u8>

Schema for serializing response to source chain (JSON-encoded).

Trait Implementations

impl BorshDeserialize for SignBidirectionalEvent

where Pubkey: BorshDeserialize, Vec<u8>: BorshDeserialize, String: BorshDeserialize, u32: BorshDeserialize, u64: BorshDeserialize,

fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self, Error>

fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.

fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.

fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>

where R: Read,

impl BorshSerialize for SignBidirectionalEvent

where Pubkey: BorshSerialize, Vec<u8>: BorshSerialize, String: BorshSerialize, u32: BorshSerialize, u64: BorshSerialize,

fn serialize<W: Write>(&self, writer: &mut W) -> Result<(), Error>

fn try_to_vec(&self) -> Result<Vec<u8>, Error>

Serialize this instance into a vector of bytes.

impl Discriminator for SignBidirectionalEvent

const DISCRIMINATOR: &'static [u8]

Discriminator slice.

impl Event for SignBidirectionalEvent

fn data(&self) -> Vec<u8>