Timelimit is u32 and not u64

src/builder.rs

@@ -524,12 +524,12 @@ pub struct Builder {
     bundle_type: BundleType,
     anchor: Anchor,
     // When timelimit is set, the Builder will build an ActionGroup (burn must be empty)
-    timelimit: Option<u64>,
+    timelimit: Option<u32>,
 }
 
 impl Builder {
     /// Constructs a new empty builder for an Orchard bundle.
-    pub fn new(bundle_type: BundleType, anchor: Anchor, timelimit: Option<u64>) -> Self {
+    pub fn new(bundle_type: BundleType, anchor: Anchor, timelimit: Option<u32>) -> Self {
         Builder {
             spends: vec![],
             outputs: vec![],
@@ -768,7 +768,7 @@ fn pad_spend(
 pub fn bundle<V: TryFrom<i64>, FL: OrchardFlavor>(
     mut rng: impl RngCore,
     anchor: Anchor,
-    timelimit: Option<u64>,
+    timelimit: Option<u32>,
     bundle_type: BundleType,
     spends: Vec<SpendInfo>,
     outputs: Vec<OutputInfo>,

src/bundle.rs

@@ -210,7 +210,7 @@ pub struct Bundle<A: Authorization, V, D: OrchardDomainCommon> {
     /// The timelimit for this Bundle (which is an ActionGroup).
     ///
     /// Burn must be empty when timelimit is set.
-    timelimit: Option<u64>,
+    timelimit: Option<u32>,
     /// The authorization for this bundle.
     authorization: A,
 }
@@ -243,7 +243,7 @@ impl<A: Authorization, V, D: OrchardDomainCommon> Bundle<A, V, D> {
         value_balance: V,
         burn: Vec<(AssetBase, NoteValue)>,
         anchor: Anchor,
-        timelimit: Option<u64>,
+        timelimit: Option<u32>,
         authorization: A,
     ) -> Self {
         Bundle {
@@ -284,6 +284,11 @@ impl<A: Authorization, V, D: OrchardDomainCommon> Bundle<A, V, D> {
         &self.anchor
     }
 
+    /// Returns the root of the Orchard commitment tree that this bundle commits to.
+    pub fn timelimit(&self) -> Option<u32> {
+        self.timelimit
+    }
+
     /// Returns the authorization for this bundle.
     ///
     /// In the case of a `Bundle<Authorized>`, this is the proof and binding signature.