From 6051ab714b4b36d654d1d0a328f45f977b9b9047 Mon Sep 17 00:00:00 2001
From: sergerad <serge.radinovich@immutable.com>
Date: Fri, 30 Aug 2024 08:49:24 +1200
Subject: [PATCH] Transaction chain_id

---
 rollup/src/lib.rs         | 1 +
 rollup/src/transaction.rs | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/rollup/src/lib.rs b/rollup/src/lib.rs
index 376aa95..4da3fdd 100644
--- a/rollup/src/lib.rs
+++ b/rollup/src/lib.rs
@@ -19,3 +19,4 @@ mod address;
 pub use address::Address;
 
 pub const BLOCK_PERIOD_MILLIS: u64 = 2000;
+pub const CHAIN_ID: u64 = 83479;
diff --git a/rollup/src/transaction.rs b/rollup/src/transaction.rs
index ee9e1e0..2a6b8c8 100644
--- a/rollup/src/transaction.rs
+++ b/rollup/src/transaction.rs
@@ -3,11 +3,13 @@ use secp256k1::{Message, Secp256k1};
 use serde::{Deserialize, Serialize};
 
 use crate::signer::{Signature, Signer};
-use crate::Address;
+use crate::{Address, CHAIN_ID};
 
 /// A transaction header containing metadata about the transaction.
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct TransactionHeader {
+    /// The identifier of the chain on which the transaction was intended to be executed.
+    chain_id: u64,
     /// The address of the sender of the transaction.
     sender: Address,
     /// The address of the recipient of the transaction.
@@ -66,6 +68,7 @@ impl Transaction {
     pub fn dynamic(sender: Address, amount: u64) -> Self {
         Transaction::Dynamic(DynamicTxData {
             header: TransactionHeader {
+                chain_id: CHAIN_ID,
                 sender,
                 recipient: Address::random(),
                 amount,
@@ -79,6 +82,7 @@ impl Transaction {
     pub fn withdrawal(sender: Address, amount: u64, dest_chain: u64) -> Self {
         Transaction::Withdrawal(WithdrawalTxData {
             header: TransactionHeader {
+                chain_id: CHAIN_ID,
                 sender,
                 recipient: sender,
                 amount,