Function create_kickoff_txhandler

pub fn create_kickoff_txhandler(
    kickoff_data: KickoffData,
    round_txhandler: &TxHandler,
    move_txhandler: &TxHandler,
    deposit_data: &mut DepositData,
    operator_xonly_pk: XOnlyPublicKey,
    assert_scripts: AssertScripts<'_>,
    disprove_path: DisprovePath<'_>,
    additional_disprove_script: Vec<u8>,
    latest_blockhash_script: AssertScripts<'_>,
    operator_unlock_hashes: &[[u8; 20]],
    paramset: &'static ProtocolParamset,
) -> Result<TxHandler, BridgeError>

Creates a TxHandler for the kickoff_tx.

This transaction is sent by the operator to initialize protocol state for a round, when operator fronted a peg-out and wants reimbursement. It sets up all outputs needed for subsequent protocol steps (challenge, reimbursement, asserts, etc.).

Inputs

1. RoundTx: Kickoff utxo (for the given kickoff index)

Outputs

1. Operator challenge output (for challenge or no-challenge path)
2. Kickoff finalizer connector
3. Reimburse connector (to be used in reimburse transaction)
4. Disprove output (Taproot, for BitVM disprove path)
5. Latest blockhash output (for latest blockhash assertion using winternitz signatures)
6. Multiple assert outputs (for BitVM assertions, currently 33)
7. For each watchtower 2 outputs:
   • Watchtower challenge output
   • Operator challenge ack/nack output
8. OP_RETURN output (with move-to-vault txid and operator xonly pubkey)
9. Anchor output for CPFP

Arguments

• kickoff_data - Data to identify the kickoff.
• round_txhandler - The round transaction handler providing the input.
• move_txhandler - The move-to-vault transaction handler.
• deposit_data - Mutable reference to deposit data.
• operator_xonly_pk - The operator’s x-only public key.
• assert_scripts - Actual assertion scripts or tapnode hashes (for faster creation of assert utxos) for BitVM assertion.
• disprove_root_hash - Root hash for BitVM disprove scripts.
• additional_disprove_script - Additional disprove script bytes (for additional disprove script specific to Clementine).
• latest_blockhash_script - Actual script or tapnode hash for latest blockhash assertion.
• operator_unlock_hashes - Unlock hashes for operator preimage reveals for OperatorChallengeAck transactions.
• paramset - Protocol parameter set.

Returns

A TxHandler for the kickoff transaction, or a BridgeError if construction fails.