diff --git a/go/consensus/cometbft/apps/keymanager/churp/state/interop/interop.go b/go/consensus/cometbft/apps/keymanager/churp/state/interop/interop.go
new file mode 100644
index 00000000000..133e877384d
--- /dev/null
+++ b/go/consensus/cometbft/apps/keymanager/churp/state/interop/interop.go
@@ -0,0 +1,122 @@
+package interop
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/oasisprotocol/oasis-core/go/common"
+	"github.com/oasisprotocol/oasis-core/go/common/cbor"
+	"github.com/oasisprotocol/oasis-core/go/common/crypto/hash"
+	"github.com/oasisprotocol/oasis-core/go/common/crypto/signature"
+	memorySigner "github.com/oasisprotocol/oasis-core/go/common/crypto/signature/signers/memory"
+	"github.com/oasisprotocol/oasis-core/go/common/sgx"
+	churpState "github.com/oasisprotocol/oasis-core/go/consensus/cometbft/apps/keymanager/churp/state"
+	"github.com/oasisprotocol/oasis-core/go/keymanager/churp"
+	"github.com/oasisprotocol/oasis-core/go/keymanager/secrets"
+	"github.com/oasisprotocol/oasis-core/go/storage/mkvs"
+)
+
+// InitializeTestKeyManagerSecretsState must be kept in sync with tests in runtimes/consensus/state/keymanager/churp.rs.
+func InitializeTestKeyManagerSecretsState(ctx context.Context, mkvs mkvs.Tree) error {
+	state := churpState.NewMutableState(mkvs)
+
+	// One runtime.
+	var runtime common.Namespace
+	if err := runtime.UnmarshalHex("8000000000000000000000000000000000000000000000000000000000000000"); err != nil {
+		return err
+	}
+
+	// Two enclave identities.
+	var enclave1, enclave2 sgx.EnclaveIdentity
+	if err := enclave1.MrEnclave.UnmarshalHex("c9a589851b1f35627177fd70378ed778170f737611e4dfbf0b6d25bdff55b474"); err != nil {
+		return err
+	}
+	if err := enclave1.MrSigner.UnmarshalHex("7d310664780931ae103ab30a90171c201af385a72757bb4683578fdebde9adf5"); err != nil {
+		return err
+	}
+	if err := enclave2.MrEnclave.UnmarshalHex("756eaf76f5482c5345808b1eaccdd5c60f864bb2aa2d2b870df00ce435af4e23"); err != nil {
+		return err
+	}
+	if err := enclave2.MrSigner.UnmarshalHex("3597a2ff0743016f28e5d7e129304ee1c43dbdae3dba94e19cee3549038a5a32"); err != nil {
+		return err
+	}
+
+	// CHURP identity.
+	identity := churp.Identity{
+		ID:        1,
+		RuntimeID: runtime,
+	}
+
+	// Signed policy.
+	policy := churp.PolicySGX{
+		Identity: identity,
+		Serial:   6,
+		MayShare: []sgx.EnclaveIdentity{enclave1},
+		MayJoin:  []sgx.EnclaveIdentity{enclave2},
+	}
+	sigPolicy := churp.SignedPolicySGX{
+		Policy:     policy,
+		Signatures: []signature.Signature{},
+	}
+
+	// Two signers.
+	signers := []signature.Signer{
+		memorySigner.NewTestSigner("first signer"),
+		memorySigner.NewTestSigner("second signer"),
+	}
+
+	for _, signer := range signers {
+		sig, err := signature.Sign(signer, secrets.PolicySGXSignatureContext, cbor.Marshal(policy))
+		if err != nil {
+			return fmt.Errorf("failed to sign policy: %w", err)
+		}
+		sigPolicy.Signatures = append(sigPolicy.Signatures, *sig)
+	}
+
+	// Random checksum.
+	var checksum hash.Hash
+	if err := checksum.UnmarshalHex("1bff211fae98c88ba82388ae954b88a71d3bbe327e162e9fa711fe7a1b759c3e"); err != nil {
+		return err
+	}
+
+	// Committee.
+	committee := []signature.PublicKey{signers[0].Public(), signers[1].Public()}
+
+	// Applications.
+	applications := map[signature.PublicKey]churp.Application{
+		signers[0].Public(): {
+			Checksum:      checksum,
+			Reconstructed: false,
+		},
+		signers[1].Public(): {
+			Checksum:      checksum,
+			Reconstructed: true,
+		},
+	}
+
+	// Empty status.
+	var status churp.Status
+	if err := state.SetStatus(ctx, &status); err != nil {
+		return fmt.Errorf("failed to set key CHURP status: %w", err)
+	}
+
+	// Non-empty status.
+	status = churp.Status{
+		Identity:        identity,
+		GroupID:         churp.EccNistP384,
+		Threshold:       2,
+		Round:           3,
+		NextHandoff:     4,
+		HandoffInterval: 5,
+		Policy:          sigPolicy,
+		Committee:       committee,
+		Applications:    applications,
+		Checksum:        &checksum,
+	}
+
+	if err := state.SetStatus(ctx, &status); err != nil {
+		return fmt.Errorf("failed to set key CHURP status: %w", err)
+	}
+
+	return nil
+}
diff --git a/go/consensus/cometbft/apps/keymanager/secrets/state/interop/interop.go b/go/consensus/cometbft/apps/keymanager/secrets/state/interop/interop.go
index 280f6cdb5dc..2c573c2cf92 100644
--- a/go/consensus/cometbft/apps/keymanager/secrets/state/interop/interop.go
+++ b/go/consensus/cometbft/apps/keymanager/secrets/state/interop/interop.go
@@ -125,7 +125,7 @@ func InitializeTestKeyManagerSecretsState(ctx context.Context, mkvs mkvs.Tree) e
 		},
 	} {
 		if err = state.SetStatus(ctx, status); err != nil {
-			return fmt.Errorf("setting key manager status: %w", err)
+			return fmt.Errorf("failed to set key manager status: %w", err)
 		}
 	}
 
diff --git a/go/consensus/cometbft/apps/keymanager/state/interop/interop.go b/go/consensus/cometbft/apps/keymanager/state/interop/interop.go
index dfa616070c1..82d55ddb0f8 100644
--- a/go/consensus/cometbft/apps/keymanager/state/interop/interop.go
+++ b/go/consensus/cometbft/apps/keymanager/state/interop/interop.go
@@ -3,10 +3,14 @@ package interop
 import (
 	"context"
 
+	churpInterop "github.com/oasisprotocol/oasis-core/go/consensus/cometbft/apps/keymanager/churp/state/interop"
 	secretsInterop "github.com/oasisprotocol/oasis-core/go/consensus/cometbft/apps/keymanager/secrets/state/interop"
 	"github.com/oasisprotocol/oasis-core/go/storage/mkvs"
 )
 
 func InitializeTestKeyManagerState(ctx context.Context, mkvs mkvs.Tree) error {
-	return secretsInterop.InitializeTestKeyManagerSecretsState(ctx, mkvs)
+	if err := secretsInterop.InitializeTestKeyManagerSecretsState(ctx, mkvs); err != nil {
+		return err
+	}
+	return churpInterop.InitializeTestKeyManagerSecretsState(ctx, mkvs)
 }
diff --git a/runtime/src/consensus/state/beacon.rs b/runtime/src/consensus/state/beacon.rs
index b590c898b14..4efeb7c90db 100644
--- a/runtime/src/consensus/state/beacon.rs
+++ b/runtime/src/consensus/state/beacon.rs
@@ -154,7 +154,7 @@ mod test {
         let mock_consensus_root = Root {
             version: 1,
             root_type: RootType::State,
-            hash: Hash::from("f637a80b24e3ffaaf3de0da96f1dfd94d0a135348f40006d578d557d70d5fa42"),
+            hash: Hash::from("b13652616801aaac81697445b16d75cfa5dd96d53df6fd96dff9cd29c0ee0725"),
             ..Default::default()
         };
         let mkvs = Tree::builder()
diff --git a/runtime/src/consensus/state/keymanager.rs b/runtime/src/consensus/state/keymanager.rs
index bc33d7e8abb..926187c494c 100644
--- a/runtime/src/consensus/state/keymanager.rs
+++ b/runtime/src/consensus/state/keymanager.rs
@@ -166,7 +166,7 @@ mod test {
         let mock_consensus_root = Root {
             version: 1,
             root_type: RootType::State,
-            hash: Hash::from("f637a80b24e3ffaaf3de0da96f1dfd94d0a135348f40006d578d557d70d5fa42"),
+            hash: Hash::from("b13652616801aaac81697445b16d75cfa5dd96d53df6fd96dff9cd29c0ee0725"),
             ..Default::default()
         };
         let mkvs = Tree::builder()
diff --git a/runtime/src/consensus/state/registry.rs b/runtime/src/consensus/state/registry.rs
index d259cd257c1..df0b4aa5ce8 100644
--- a/runtime/src/consensus/state/registry.rs
+++ b/runtime/src/consensus/state/registry.rs
@@ -131,7 +131,7 @@ mod test {
         let mock_consensus_root = Root {
             version: 1,
             root_type: RootType::State,
-            hash: Hash::from("f637a80b24e3ffaaf3de0da96f1dfd94d0a135348f40006d578d557d70d5fa42"),
+            hash: Hash::from("b13652616801aaac81697445b16d75cfa5dd96d53df6fd96dff9cd29c0ee0725"),
             ..Default::default()
         };
         let mkvs = Tree::builder()
diff --git a/runtime/src/consensus/state/roothash.rs b/runtime/src/consensus/state/roothash.rs
index 26dd7f5329b..3ad9732fadd 100644
--- a/runtime/src/consensus/state/roothash.rs
+++ b/runtime/src/consensus/state/roothash.rs
@@ -123,7 +123,7 @@ mod test {
         let mock_consensus_root = Root {
             version: 1,
             root_type: RootType::State,
-            hash: Hash::from("f637a80b24e3ffaaf3de0da96f1dfd94d0a135348f40006d578d557d70d5fa42"),
+            hash: Hash::from("b13652616801aaac81697445b16d75cfa5dd96d53df6fd96dff9cd29c0ee0725"),
             ..Default::default()
         };
         let mkvs = Tree::builder()
diff --git a/runtime/src/consensus/state/staking.rs b/runtime/src/consensus/state/staking.rs
index 8728cba9730..94d252989cf 100644
--- a/runtime/src/consensus/state/staking.rs
+++ b/runtime/src/consensus/state/staking.rs
@@ -221,7 +221,7 @@ mod test {
         let mock_consensus_root = Root {
             version: 1,
             root_type: RootType::State,
-            hash: Hash::from("f637a80b24e3ffaaf3de0da96f1dfd94d0a135348f40006d578d557d70d5fa42"),
+            hash: Hash::from("b13652616801aaac81697445b16d75cfa5dd96d53df6fd96dff9cd29c0ee0725"),
             ..Default::default()
         };
         let mkvs = Tree::builder()