diff --git a/Cargo.lock b/Cargo.lock
index fe59be48..9e226ce5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -729,7 +729,7 @@ dependencies = [
 [[package]]
 name = "rgb-core"
 version = "0.10.0-rc.2"
-source = "git+https://github.com/RGB-WG/rgb-core?branch=v0.10.0-release#9c9afc5262596ebe6f25c404cde99c55b63a2b6d"
+source = "git+https://github.com/RGB-WG/rgb-core?branch=v0.10.0-release#40d4af5ecde086ed6eb6e6f1ca1c28d2599b48de"
 dependencies = [
  "aluvm",
  "amplify",
diff --git a/src/pay.rs b/src/pay.rs
index 3e80e2b2..6348439d 100644
--- a/src/pay.rs
+++ b/src/pay.rs
@@ -188,7 +188,7 @@ pub trait InventoryWallet: Inventory {
         }
         let transition = main_builder
             .add_raw_state(assignment_id, beneficiary, TypedState::Amount(invoice.value))?
-            .complete_transition()?;
+            .complete_transition(contract_id)?;
 
         // 3. Prepare and self-consume other transitions
         let mut contract_inputs = HashMap::<ContractId, Vec<Outpoint>>::new();
@@ -221,7 +221,7 @@ pub trait InventoryWallet: Inventory {
                     .add_raw_state(opout.ty, seal, state)?;
             }
 
-            other_transitions.insert(id, blank_builder.complete_transition()?);
+            other_transitions.insert(id, blank_builder.complete_transition(contract_id)?);
         }
 
         // 4. Add transitions to PSBT
diff --git a/std/src/containers/consignment.rs b/std/src/containers/consignment.rs
index 0dca4f15..b8493d15 100644
--- a/std/src/containers/consignment.rs
+++ b/std/src/containers/consignment.rs
@@ -194,8 +194,8 @@ impl<const TYPE: bool> Consignment<TYPE> {
                         if *used {
                             continue;
                         }
-                        for opout in &transition.inputs {
-                            if opout.op == *id {
+                        for input in &transition.inputs {
+                            if input.prev_out.op == *id {
                                 *used = true;
                                 if let Some(ord) = ordered_extensions.get_mut(id) {
                                     if *ord > ord_txid {
diff --git a/std/src/interface/builder.rs b/std/src/interface/builder.rs
index e15abafe..769ad257 100644
--- a/std/src/interface/builder.rs
+++ b/std/src/interface/builder.rs
@@ -26,9 +26,9 @@ use amplify::{confinement, Wrapper};
 use bp::secp256k1::rand::thread_rng;
 use bp::Chain;
 use rgb::{
-    Assign, AssignmentType, Assignments, ExposedSeal, FungibleType, Genesis, GenesisSeal,
-    GlobalState, GraphSeal, Opout, PrevOuts, RevealedValue, StateSchema, SubSchema, Transition,
-    TransitionType, TypedAssigns, BLANK_TRANSITION_ID,
+    Assign, AssignmentType, Assignments, ContractId, ExposedSeal, FungibleType, Genesis,
+    GenesisSeal, GlobalState, GraphSeal, Input, Inputs, Opout, RevealedValue, StateSchema,
+    SubSchema, Transition, TransitionType, TypedAssigns, BLANK_TRANSITION_ID,
 };
 use strict_encoding::{SerializeError, StrictSerialize, TypeName};
 use strict_types::decode;
@@ -139,7 +139,7 @@ impl ContractBuilder {
 pub struct TransitionBuilder {
     builder: OperationBuilder<GraphSeal>,
     transition_type: Option<TransitionType>,
-    inputs: PrevOuts,
+    inputs: Inputs,
 }
 
 impl TransitionBuilder {
@@ -156,7 +156,7 @@ impl TransitionBuilder {
     }
 
     pub fn add_input(mut self, opout: Opout) -> Result<Self, BuilderError> {
-        self.inputs.push(opout)?;
+        self.inputs.push(Input::with(opout))?;
         Ok(self)
     }
 
@@ -251,13 +251,14 @@ impl TransitionBuilder {
             .ok_or(BuilderError::NoOperationSubtype)
     }
 
-    pub fn complete_transition(self) -> Result<Transition, BuilderError> {
+    pub fn complete_transition(self, contract_id: ContractId) -> Result<Transition, BuilderError> {
         let transition_type = self.transition_type()?;
 
         let (_, _, global, assignments) = self.builder.complete();
 
         let transition = Transition {
             ffv: none!(),
+            contract_id,
             transition_type,
             metadata: empty!(),
             globals: global,
diff --git a/std/src/persistence/inventory.rs b/std/src/persistence/inventory.rs
index bafb72e4..6644320b 100644
--- a/std/src/persistence/inventory.rs
+++ b/std/src/persistence/inventory.rs
@@ -463,14 +463,14 @@ pub trait Inventory: Deref<Target = Self::Stash> {
         // 3. Collect all state transitions between terminals and genesis
         let mut ids = vec![];
         for transition in transitions.values() {
-            ids.extend(transition.prev_outs().iter().map(|opout| opout.op));
+            ids.extend(transition.inputs().iter().map(|input| input.prev_out.op));
         }
         while let Some(id) = ids.pop() {
             if id == contract_id {
                 continue; // we skip genesis since it will be present anywhere
             }
             let transition = self.transition(id)?;
-            ids.extend(transition.prev_outs().iter().map(|opout| opout.op));
+            ids.extend(transition.inputs().iter().map(|input| input.prev_out.op));
             transitions.insert(id, transition.clone());
             anchored_bundles
                 .entry(id)