diff --git a/benchmarks/performance-poetry/complex-poetry/src/androidTest/java/com/squareup/benchmarks/performance/complex/poetry/RenderPassTest.kt b/benchmarks/performance-poetry/complex-poetry/src/androidTest/java/com/squareup/benchmarks/performance/complex/poetry/RenderPassTest.kt
index 9f566a7dc3..0cdc9ef554 100644
--- a/benchmarks/performance-poetry/complex-poetry/src/androidTest/java/com/squareup/benchmarks/performance/complex/poetry/RenderPassTest.kt
+++ b/benchmarks/performance-poetry/complex-poetry/src/androidTest/java/com/squareup/benchmarks/performance/complex/poetry/RenderPassTest.kt
@@ -227,7 +227,7 @@ class RenderPassTest {
       useHighFrequencyRange = true,
       simultaneousActions = 0,
       baselineExpectation = RenderExpectation(
-        totalPasses = 181..181,
+        totalPasses = 150..150,
         freshRenderedNodes = 213..213,
         staleRenderedNodes = 2350..2350
       ),
diff --git a/samples/compose-samples/src/main/java/com/squareup/sample/compose/hellocomposeworkflow/ComposeWorkflow.kt b/samples/compose-samples/src/main/java/com/squareup/sample/compose/hellocomposeworkflow/ComposeWorkflow.kt
index da39ae62f8..4cb98d2e57 100644
--- a/samples/compose-samples/src/main/java/com/squareup/sample/compose/hellocomposeworkflow/ComposeWorkflow.kt
+++ b/samples/compose-samples/src/main/java/com/squareup/sample/compose/hellocomposeworkflow/ComposeWorkflow.kt
@@ -5,6 +5,8 @@ import com.squareup.workflow1.RenderContext
 import com.squareup.workflow1.Sink
 import com.squareup.workflow1.StatefulWorkflow
 import com.squareup.workflow1.Workflow
+import com.squareup.workflow1.WorkflowIdentifier
+import com.squareup.workflow1.computeIdentifier
 import com.squareup.workflow1.ui.ViewEnvironment
 import com.squareup.workflow1.ui.WorkflowUiExperimentalApi
 import com.squareup.workflow1.ui.compose.ComposeScreen
@@ -48,6 +50,8 @@ abstract class ComposeWorkflow<in PropsT, out OutputT : Any> :
 
   override fun asStatefulWorkflow(): StatefulWorkflow<PropsT, *, OutputT, ComposeScreen> =
     ComposeWorkflowImpl(this)
+
+  override val identifier: WorkflowIdentifier = computeIdentifier()
 }
 
 /**
diff --git a/workflow-core/api/workflow-core.api b/workflow-core/api/workflow-core.api
index 5a896de3ed..8fa38e91e8 100644
--- a/workflow-core/api/workflow-core.api
+++ b/workflow-core/api/workflow-core.api
@@ -118,6 +118,7 @@ public final class com/squareup/workflow1/Snapshots {
 public abstract class com/squareup/workflow1/StatefulWorkflow : com/squareup/workflow1/Workflow {
 	public fun <init> ()V
 	public final fun asStatefulWorkflow ()Lcom/squareup/workflow1/StatefulWorkflow;
+	public fun getIdentifier ()Lcom/squareup/workflow1/WorkflowIdentifier;
 	public abstract fun initialState (Ljava/lang/Object;Lcom/squareup/workflow1/Snapshot;)Ljava/lang/Object;
 	public fun onPropsChanged (Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
 	public abstract fun render (Ljava/lang/Object;Ljava/lang/Object;Lcom/squareup/workflow1/StatefulWorkflow$RenderContext;)Ljava/lang/Object;
@@ -144,6 +145,7 @@ public final class com/squareup/workflow1/StatefulWorkflow$RenderContext : com/s
 public abstract class com/squareup/workflow1/StatelessWorkflow : com/squareup/workflow1/Workflow {
 	public fun <init> ()V
 	public final fun asStatefulWorkflow ()Lcom/squareup/workflow1/StatefulWorkflow;
+	public fun getIdentifier ()Lcom/squareup/workflow1/WorkflowIdentifier;
 	public abstract fun render (Ljava/lang/Object;Lcom/squareup/workflow1/StatelessWorkflow$RenderContext;)Ljava/lang/Object;
 }
 
@@ -191,6 +193,7 @@ public final class com/squareup/workflow1/Worker$DefaultImpls {
 public abstract interface class com/squareup/workflow1/Workflow {
 	public static final field Companion Lcom/squareup/workflow1/Workflow$Companion;
 	public abstract fun asStatefulWorkflow ()Lcom/squareup/workflow1/StatefulWorkflow;
+	public abstract fun getIdentifier ()Lcom/squareup/workflow1/WorkflowIdentifier;
 }
 
 public final class com/squareup/workflow1/Workflow$Companion {
@@ -283,8 +286,8 @@ public final class com/squareup/workflow1/Workflows {
 	public static synthetic fun action$default (Lcom/squareup/workflow1/StatelessWorkflow;Ljava/lang/String;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lcom/squareup/workflow1/WorkflowAction;
 	public static synthetic fun action$default (Ljava/lang/String;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lcom/squareup/workflow1/WorkflowAction;
 	public static final fun applyTo (Lcom/squareup/workflow1/WorkflowAction;Ljava/lang/Object;Ljava/lang/Object;)Lkotlin/Pair;
+	public static final fun computeIdentifier (Lcom/squareup/workflow1/Workflow;)Lcom/squareup/workflow1/WorkflowIdentifier;
 	public static final fun contraMap (Lcom/squareup/workflow1/Sink;Lkotlin/jvm/functions/Function1;)Lcom/squareup/workflow1/Sink;
-	public static final fun getIdentifier (Lcom/squareup/workflow1/Workflow;)Lcom/squareup/workflow1/WorkflowIdentifier;
 	public static final fun mapRendering (Lcom/squareup/workflow1/Workflow;Lkotlin/jvm/functions/Function1;)Lcom/squareup/workflow1/Workflow;
 	public static final fun renderChild (Lcom/squareup/workflow1/BaseRenderContext;Lcom/squareup/workflow1/Workflow;Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
 	public static final fun renderChild (Lcom/squareup/workflow1/BaseRenderContext;Lcom/squareup/workflow1/Workflow;Ljava/lang/String;)Ljava/lang/Object;
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/ImpostorWorkflow.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/ImpostorWorkflow.kt
index 4e75c8f7dd..c11abaf4d7 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/ImpostorWorkflow.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/ImpostorWorkflow.kt
@@ -18,7 +18,7 @@ import kotlin.jvm.JvmName
 public interface ImpostorWorkflow {
   /**
    * The [WorkflowIdentifier] of another workflow to be combined with the identifier of this
-   * workflow, as obtained by [Workflow.identifier].
+   * workflow, as obtained by [Workflow.computeIdentifier].
    *
    * For workflows that implement operators, this should be the identifier of the upstream
    * [Workflow] that this workflow wraps.
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatefulWorkflow.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatefulWorkflow.kt
index 031235ff4c..f961448996 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatefulWorkflow.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatefulWorkflow.kt
@@ -129,6 +129,10 @@ public abstract class StatefulWorkflow<
     context: RenderContext
   ): RenderingT
 
+  override val identifier: WorkflowIdentifier by lazy {
+    computeIdentifier()
+  }
+
   /**
    * Called whenever the state changes to generate a new [Snapshot] of the state.
    *
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatelessWorkflow.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatelessWorkflow.kt
index f6545524e2..e052e34519 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatelessWorkflow.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/StatelessWorkflow.kt
@@ -57,6 +57,10 @@ public abstract class StatelessWorkflow<in PropsT, out OutputT, out RenderingT>
     context: RenderContext
   ): RenderingT
 
+  override val identifier: WorkflowIdentifier by lazy {
+    computeIdentifier()
+  }
+
   /**
    * Satisfies the [Workflow] interface by wrapping `this` in a [StatefulWorkflow] with `Unit`
    * state.
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Workflow.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Workflow.kt
index ce2aaf685d..f477f8e992 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Workflow.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/Workflow.kt
@@ -104,6 +104,8 @@ public interface Workflow<in PropsT, out OutputT, out RenderingT> {
    */
   public fun asStatefulWorkflow(): StatefulWorkflow<PropsT, *, OutputT, RenderingT>
 
+  public val identifier: WorkflowIdentifier
+
   /**
    * Empty companion serves as a hook point to allow us to create `Workflow.foo`
    * extension methods elsewhere.
@@ -120,7 +122,7 @@ Workflow<PropsT, OutputT, FromRenderingT>.mapRendering(
   transform: (FromRenderingT) -> ToRenderingT
 ): Workflow<PropsT, OutputT, ToRenderingT> =
   object : StatelessWorkflow<PropsT, OutputT, ToRenderingT>(), ImpostorWorkflow {
-    override val realIdentifier: WorkflowIdentifier get() = this@mapRendering.identifier
+    override val realIdentifier: WorkflowIdentifier = this@mapRendering.identifier
 
     override fun render(
       renderProps: PropsT,
diff --git a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowIdentifier.kt b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowIdentifier.kt
index a155834531..f1048c0046 100644
--- a/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowIdentifier.kt
+++ b/workflow-core/src/commonMain/kotlin/com/squareup/workflow1/WorkflowIdentifier.kt
@@ -146,15 +146,14 @@ public class WorkflowIdentifier internal constructor(
 /**
  * The [WorkflowIdentifier] that identifies this [Workflow].
  */
-public val Workflow<*, *, *>.identifier: WorkflowIdentifier
-  get() {
-    val maybeImpostor = this as? ImpostorWorkflow
-    return WorkflowIdentifier(
-      type = Snapshottable(this::class),
-      proxiedIdentifier = maybeImpostor?.realIdentifier,
-      description = maybeImpostor?.let { it::describeRealIdentifier }
-    )
-  }
+public fun Workflow<*, *, *>.computeIdentifier(): WorkflowIdentifier {
+  val maybeImpostor = this as? ImpostorWorkflow
+  return WorkflowIdentifier(
+    type = Snapshottable(this::class),
+    proxiedIdentifier = maybeImpostor?.realIdentifier,
+    description = maybeImpostor?.let { it::describeRealIdentifier }
+  )
+}
 
 /**
  * Creates a [WorkflowIdentifier] that is not capable of being snapshotted and will cause any
diff --git a/workflow-core/src/commonTest/kotlin/com/squareup/workflow1/WorkflowIdentifierTest.kt b/workflow-core/src/commonTest/kotlin/com/squareup/workflow1/WorkflowIdentifierTest.kt
index b3bb5b7fd3..947c61cf10 100644
--- a/workflow-core/src/commonTest/kotlin/com/squareup/workflow1/WorkflowIdentifierTest.kt
+++ b/workflow-core/src/commonTest/kotlin/com/squareup/workflow1/WorkflowIdentifierTest.kt
@@ -172,17 +172,22 @@ internal class WorkflowIdentifierTest {
   public object TestWorkflow1 : Workflow<Nothing, Nothing, Nothing> {
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
       throw NotImplementedError()
+
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   public object TestWorkflow2 : Workflow<Nothing, Nothing, Nothing> {
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
       throw NotImplementedError()
+
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   public class TestImpostor1(
     private val proxied: Workflow<*, *, *>
   ) : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
     override val realIdentifier: WorkflowIdentifier = proxied.identifier
+    override val identifier: WorkflowIdentifier = computeIdentifier()
     override fun describeRealIdentifier(): String =
       "TestImpostor1(${WorkflowIdentifierTypeNamer.uniqueName(proxied::class)})"
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
@@ -193,6 +198,7 @@ internal class WorkflowIdentifierTest {
     proxied: Workflow<*, *, *>
   ) : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
     override val realIdentifier: WorkflowIdentifier = proxied.identifier
+    override val identifier: WorkflowIdentifier = computeIdentifier()
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
       throw NotImplementedError()
   }
@@ -201,6 +207,7 @@ internal class WorkflowIdentifierTest {
     type: KType
   ) : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
     override val realIdentifier: WorkflowIdentifier = unsnapshottableIdentifier(type)
+    override val identifier: WorkflowIdentifier = computeIdentifier()
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
       throw NotImplementedError()
   }
diff --git a/workflow-core/src/iosTest/kotlin/com/squareup/workflow1/NativeWorkflowIdentifierTest.kt b/workflow-core/src/iosTest/kotlin/com/squareup/workflow1/NativeWorkflowIdentifierTest.kt
index fdc5f2c882..aeae047852 100644
--- a/workflow-core/src/iosTest/kotlin/com/squareup/workflow1/NativeWorkflowIdentifierTest.kt
+++ b/workflow-core/src/iosTest/kotlin/com/squareup/workflow1/NativeWorkflowIdentifierTest.kt
@@ -21,6 +21,7 @@ class NativeWorkflowIdentifierTest {
   fun `impostor identifier toString uses full chain when describeRealIdentifier returns null`() {
     class TestImpostor : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier = TestWorkflow1.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun describeRealIdentifier(): String? = null
 
       override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
diff --git a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/JsWorkflowIdentifierTest.kt b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/JsWorkflowIdentifierTest.kt
index 106ca79059..ee200229ec 100644
--- a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/JsWorkflowIdentifierTest.kt
+++ b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/JsWorkflowIdentifierTest.kt
@@ -26,6 +26,7 @@ internal class JsWorkflowIdentifierTest {
   fun impostor_identifier_toString_uses_full_chain_when_describeRealIdentifier_returns_null() {
     class TestImpostor : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier = TestWorkflow1.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun describeRealIdentifier(): String? = null
 
       override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
diff --git a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows1/JsMockWorkflows.kt b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows1/JsMockWorkflows.kt
index ecf938806e..d2f8f72d7e 100644
--- a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows1/JsMockWorkflows.kt
+++ b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows1/JsMockWorkflows.kt
@@ -2,13 +2,19 @@ package com.squareup.workflow1.mocks.workflows1
 
 import com.squareup.workflow1.StatefulWorkflow
 import com.squareup.workflow1.Workflow
+import com.squareup.workflow1.WorkflowIdentifier
+import com.squareup.workflow1.computeIdentifier
 
 public class JsMockWorkflow1 : Workflow<Nothing, Nothing, Nothing> {
   override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
     throw NotImplementedError()
+
+  override val identifier: WorkflowIdentifier = computeIdentifier()
 }
 
 public class JsMockWorkflow2 : Workflow<Nothing, Nothing, Nothing> {
   override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
     throw NotImplementedError()
+
+  override val identifier: WorkflowIdentifier = computeIdentifier()
 }
diff --git a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows2/JsMockWorkflow1.kt b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows2/JsMockWorkflow1.kt
index 841db956e7..3feeb719c9 100644
--- a/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows2/JsMockWorkflow1.kt
+++ b/workflow-core/src/jsTest/kotlin/com.squareup.workflow1/mocks.workflows2/JsMockWorkflow1.kt
@@ -2,10 +2,14 @@ package com.squareup.workflow1.mocks.workflows2
 
 import com.squareup.workflow1.StatefulWorkflow
 import com.squareup.workflow1.Workflow
+import com.squareup.workflow1.WorkflowIdentifier
+import com.squareup.workflow1.computeIdentifier
 
 // This is purposely duplicated to be like com.squareup.workflow1.mocks.workflows1.JsMockWorkflow1,
 // but with a slightly different Output.
 public class JsMockWorkflow1 : Workflow<Nothing, String, Nothing> {
   override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, String, Nothing> =
     throw NotImplementedError()
+
+  override val identifier: WorkflowIdentifier = computeIdentifier()
 }
diff --git a/workflow-core/src/jvmTest/kotlin/com/squareup/workflow1/JvmWorkflowIdentifierTest.kt b/workflow-core/src/jvmTest/kotlin/com/squareup/workflow1/JvmWorkflowIdentifierTest.kt
index 272d3eb703..922e7911d7 100644
--- a/workflow-core/src/jvmTest/kotlin/com/squareup/workflow1/JvmWorkflowIdentifierTest.kt
+++ b/workflow-core/src/jvmTest/kotlin/com/squareup/workflow1/JvmWorkflowIdentifierTest.kt
@@ -24,6 +24,7 @@ class JvmWorkflowIdentifierTest {
   fun `impostor identifier toString uses full chain when describeRealIdentifier returns null`() {
     class TestImpostor : Workflow<Nothing, Nothing, Nothing>, ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier = TestWorkflow1.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun describeRealIdentifier(): String? = null
 
       override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
diff --git a/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/SubtreeManager.kt b/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/SubtreeManager.kt
index 38504d33fd..284cff9c02 100644
--- a/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/SubtreeManager.kt
+++ b/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/SubtreeManager.kt
@@ -7,7 +7,6 @@ import com.squareup.workflow1.Workflow
 import com.squareup.workflow1.WorkflowAction
 import com.squareup.workflow1.WorkflowInterceptor
 import com.squareup.workflow1.WorkflowInterceptor.WorkflowSession
-import com.squareup.workflow1.identifier
 import kotlinx.coroutines.selects.SelectBuilder
 import kotlin.coroutines.CoroutineContext
 
diff --git a/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/WorkflowNodeId.kt b/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/WorkflowNodeId.kt
index e8b765c2df..b6dd91e824 100644
--- a/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/WorkflowNodeId.kt
+++ b/workflow-runtime/src/commonMain/kotlin/com/squareup/workflow1/internal/WorkflowNodeId.kt
@@ -2,7 +2,6 @@ package com.squareup.workflow1.internal
 
 import com.squareup.workflow1.Workflow
 import com.squareup.workflow1.WorkflowIdentifier
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.readByteStringWithLength
 import com.squareup.workflow1.readUtf8WithLength
 import com.squareup.workflow1.writeByteStringWithLength
diff --git a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/TreeSnapshotTest.kt b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/TreeSnapshotTest.kt
index f52d94da3f..350ca103c0 100644
--- a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/TreeSnapshotTest.kt
+++ b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/TreeSnapshotTest.kt
@@ -115,19 +115,23 @@ internal class TreeSnapshotTest {
 
   private object Workflow1 : Workflow<Unit, Nothing, Unit> {
     override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> = fail()
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   private object Workflow2 : Workflow<Unit, Nothing, Unit> {
     override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> = fail()
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   private object UnsnapshottableWorkflow1 : Workflow<Unit, Nothing, Unit>, ImpostorWorkflow {
     override val realIdentifier = unsnapshottableIdentifier(typeOf<String>())
     override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> = fail()
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   private object UnsnapshottableWorkflow2 : Workflow<Unit, Nothing, Unit>, ImpostorWorkflow {
     override val realIdentifier = unsnapshottableIdentifier(typeOf<String>())
     override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> = fail()
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 }
diff --git a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/ChainedWorkflowInterceptorTest.kt b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/ChainedWorkflowInterceptorTest.kt
index 441687de13..57d7f7e944 100644
--- a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/ChainedWorkflowInterceptorTest.kt
+++ b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/ChainedWorkflowInterceptorTest.kt
@@ -12,7 +12,6 @@ import com.squareup.workflow1.WorkflowIdentifier
 import com.squareup.workflow1.WorkflowInterceptor
 import com.squareup.workflow1.WorkflowInterceptor.RenderContextInterceptor
 import com.squareup.workflow1.WorkflowInterceptor.WorkflowSession
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.parse
 import com.squareup.workflow1.rendering
 import kotlinx.coroutines.CoroutineScope
diff --git a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/SubtreeManagerTest.kt b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/SubtreeManagerTest.kt
index 387aa9145f..4915128f81 100644
--- a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/SubtreeManagerTest.kt
+++ b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/SubtreeManagerTest.kt
@@ -10,7 +10,6 @@ import com.squareup.workflow1.WorkflowAction
 import com.squareup.workflow1.WorkflowOutput
 import com.squareup.workflow1.action
 import com.squareup.workflow1.applyTo
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.internal.SubtreeManagerTest.TestWorkflow.Rendering
 import kotlinx.coroutines.Dispatchers.Unconfined
 import kotlinx.coroutines.ExperimentalCoroutinesApi
diff --git a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
index ca889abfc8..1c5997db15 100644
--- a/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
+++ b/workflow-runtime/src/commonTest/kotlin/com/squareup/workflow1/internal/WorkflowNodeTest.kt
@@ -18,7 +18,6 @@ import com.squareup.workflow1.WorkflowInterceptor.WorkflowSession
 import com.squareup.workflow1.WorkflowOutput
 import com.squareup.workflow1.action
 import com.squareup.workflow1.contraMap
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.parse
 import com.squareup.workflow1.readUtf8WithLength
 import com.squareup.workflow1.renderChild
diff --git a/workflow-testing/src/main/java/com/squareup/workflow1/testing/RealRenderTester.kt b/workflow-testing/src/main/java/com/squareup/workflow1/testing/RealRenderTester.kt
index 6603330d43..cafb8f2cae 100644
--- a/workflow-testing/src/main/java/com/squareup/workflow1/testing/RealRenderTester.kt
+++ b/workflow-testing/src/main/java/com/squareup/workflow1/testing/RealRenderTester.kt
@@ -14,7 +14,6 @@ import com.squareup.workflow1.WorkflowIdentifierType.Snapshottable
 import com.squareup.workflow1.WorkflowIdentifierType.Unsnapshottable
 import com.squareup.workflow1.WorkflowOutput
 import com.squareup.workflow1.applyTo
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.testing.RealRenderTester.Expectation
 import com.squareup.workflow1.testing.RealRenderTester.Expectation.ExpectedSideEffect
 import com.squareup.workflow1.testing.RealRenderTester.Expectation.ExpectedWorker
diff --git a/workflow-testing/src/main/java/com/squareup/workflow1/testing/RenderTester.kt b/workflow-testing/src/main/java/com/squareup/workflow1/testing/RenderTester.kt
index ce3c310c33..fe471234a4 100644
--- a/workflow-testing/src/main/java/com/squareup/workflow1/testing/RenderTester.kt
+++ b/workflow-testing/src/main/java/com/squareup/workflow1/testing/RenderTester.kt
@@ -5,7 +5,6 @@ import com.squareup.workflow1.Workflow
 import com.squareup.workflow1.WorkflowAction
 import com.squareup.workflow1.WorkflowIdentifier
 import com.squareup.workflow1.WorkflowOutput
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.testing.RenderTester.ChildWorkflowMatch
 import com.squareup.workflow1.workflowIdentifier
 import kotlin.reflect.KClass
diff --git a/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt b/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
index 43798bfb65..2184685723 100644
--- a/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
+++ b/workflow-testing/src/test/java/com/squareup/workflow1/testing/RealRenderTesterTest.kt
@@ -14,8 +14,8 @@ import com.squareup.workflow1.WorkflowIdentifier
 import com.squareup.workflow1.WorkflowOutput
 import com.squareup.workflow1.action
 import com.squareup.workflow1.asWorker
+import com.squareup.workflow1.computeIdentifier
 import com.squareup.workflow1.contraMap
-import com.squareup.workflow1.identifier
 import com.squareup.workflow1.renderChild
 import com.squareup.workflow1.rendering
 import com.squareup.workflow1.runningWorker
@@ -827,12 +827,15 @@ internal class RealRenderTesterTest {
     class TestWorkflow : Workflow<Unit, Nothing, Unit> {
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
+
+      override val identifier: WorkflowIdentifier = computeIdentifier()
     }
 
     class TestImpostor(val proxy: Workflow<*, *, *>) :
       Workflow<Unit, Nothing, Unit>,
       ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier get() = proxy.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
     }
@@ -853,17 +856,22 @@ internal class RealRenderTesterTest {
     class TestWorkflowActual : Workflow<Unit, Nothing, Unit> {
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
+
+      override val identifier: WorkflowIdentifier = computeIdentifier()
     }
 
     class TestWorkflowExpected : Workflow<Unit, Nothing, Unit> {
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
+
+      override val identifier: WorkflowIdentifier = computeIdentifier()
     }
 
     class TestImpostor(val proxy: Workflow<*, *, *>) :
       Workflow<Unit, Nothing, Unit>,
       ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier get() = proxy.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
     }
@@ -891,12 +899,14 @@ internal class RealRenderTesterTest {
     class TestWorkflow : Workflow<Unit, Nothing, Unit> {
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
+      override val identifier: WorkflowIdentifier = computeIdentifier()
     }
 
     class TestImpostorActual(val proxy: Workflow<*, *, *>) :
       Workflow<Unit, Nothing, Unit>,
       ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier get() = proxy.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
     }
@@ -905,6 +915,7 @@ internal class RealRenderTesterTest {
       Workflow<Unit, Nothing, Unit>,
       ImpostorWorkflow {
       override val realIdentifier: WorkflowIdentifier get() = proxy.identifier
+      override val identifier: WorkflowIdentifier = computeIdentifier()
       override fun asStatefulWorkflow(): StatefulWorkflow<Unit, *, Nothing, Unit> =
         throw NotImplementedError()
     }
@@ -1253,6 +1264,8 @@ internal class RealRenderTesterTest {
     val workflow = object : Workflow<String, Int, Unit> {
       override fun asStatefulWorkflow(): StatefulWorkflow<String, *, Int, Unit> =
         throw NotImplementedError()
+
+      override val identifier: WorkflowIdentifier = computeIdentifier()
     }
     val invocation = createRenderChildInvocation(workflow, "props", "key")
 
@@ -1473,38 +1486,40 @@ internal class RealRenderTesterTest {
 
   @Test fun `realTypeMatchesExpectation() matches mockito mock of expected interface`() {
     val expected = TestWorkflowInterface::class.workflowIdentifier
-    val actual = mock<TestWorkflowInterface>().identifier
+    val actual = mock<TestWorkflowInterface>().computeIdentifier()
     assertTrue(actual.realTypeMatchesExpectation(expected))
   }
 
   @Test fun `realTypeMatchesExpectation() matches mockito mock of expected abstract class`() {
     val expected = ExpectedWorkflowClass::class.workflowIdentifier
-    val actual = mock<ExpectedWorkflowClass>().identifier
+    val actual = mock<ExpectedWorkflowClass>().computeIdentifier()
     assertTrue(actual.realTypeMatchesExpectation(expected))
   }
 
   @Test fun `realTypeMatchesExpectation() doesn't match mockito mock of unexpected interface`() {
     val expected = TestWorkflowInterface::class.workflowIdentifier
-    val actual = mock<Workflow<Unit, Nothing, Unit>>().identifier
+    val actual = mock<Workflow<Unit, Nothing, Unit>>().computeIdentifier()
     assertFalse(actual.realTypeMatchesExpectation(expected))
   }
 
   @Test
   fun `realTypeMatchesExpectation() doesn't match mockito mock of unexpected abstract class`() {
     val expected = ExpectedWorkflowClass::class.workflowIdentifier
-    val actual = mock<UnexpectedWorkflowClass>().identifier
+    val actual = mock<UnexpectedWorkflowClass>().computeIdentifier()
     assertFalse(actual.realTypeMatchesExpectation(expected))
   }
 
   @Test fun `realTypeMatchesExpectation() handles mockk mocks`() {
     val expected = TestWorkflowInterface::class.workflowIdentifier
-    val actual = mockk<TestWorkflowInterface>().identifier
+    val actual = mockk<TestWorkflowInterface>().computeIdentifier()
     assertTrue(actual.realTypeMatchesExpectation(expected))
   }
 
   private object TestWorkflow : Workflow<Nothing, Nothing, Nothing> {
     override fun asStatefulWorkflow(): StatefulWorkflow<Nothing, *, Nothing, Nothing> =
       throw NotImplementedError()
+
+    override val identifier: WorkflowIdentifier = computeIdentifier()
   }
 
   @Suppress("unused")