diff --git a/go.mod b/go.mod
index 6c47d8192..dcb0fc17a 100644
--- a/go.mod
+++ b/go.mod
@@ -22,9 +22,12 @@ require (
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 )
 
+require github.com/stretchr/testify v1.7.0
+
 require (
 	github.com/DataDog/zstd v1.4.1 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de // indirect
 	github.com/dgryski/go-farm v0.0.0-20190423205320-6a90982ecee2 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
@@ -34,6 +37,7 @@ require (
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-isatty v0.0.8 // indirect
 	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/tidwall/tinylru v1.1.0 // indirect
diff --git a/pkg/contextstore/contextstore.go b/pkg/contextstore/contextstore.go
new file mode 100644
index 000000000..9a3f1b7e6
--- /dev/null
+++ b/pkg/contextstore/contextstore.go
@@ -0,0 +1,17 @@
+package contextstore
+
+// ContextStore can be used to store arbitrary data under an automatically deterministically generated unique id.
+type ContextStore[T any] interface {
+	Store(t T) ItemID
+	Recover(id ItemID) T
+	Dispose(id ItemID)
+	RecoverAndDispose(id ItemID) T
+}
+
+// ItemID is used to uniquely identify entries of the ContextStore.
+type ItemID uint64
+
+// Pb returns the protobuf representation of ItemID.
+func (i ItemID) Pb() uint64 {
+	return uint64(i)
+}
diff --git a/pkg/contextstore/contextstore_test.go b/pkg/contextstore/contextstore_test.go
new file mode 100644
index 000000000..153296cd1
--- /dev/null
+++ b/pkg/contextstore/contextstore_test.go
@@ -0,0 +1,25 @@
+package contextstore
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestContextStore_SimpleTest(t *testing.T) {
+	cs := NewSequentialContextStore[string]()
+	helloID := cs.Store("Hello")
+	worldID := cs.Store("World")
+
+	assert.Equal(t, "World", cs.Recover(worldID))
+	assert.Equal(t, "Hello", cs.Recover(helloID))
+
+	cs.Dispose(worldID)
+	assert.Panics(t, func() {
+		cs.Recover(worldID)
+	})
+
+	assert.Equal(t, "Hello", cs.RecoverAndDispose(helloID))
+	assert.Panics(t, func() {
+		cs.RecoverAndDispose(helloID)
+	})
+}
diff --git a/pkg/contextstore/events.go b/pkg/contextstore/events.go
new file mode 100644
index 000000000..371452162
--- /dev/null
+++ b/pkg/contextstore/events.go
@@ -0,0 +1,41 @@
+package contextstore
+
+import (
+	"github.com/filecoin-project/mir/pkg/pb/eventpb"
+	t "github.com/filecoin-project/mir/pkg/types"
+)
+
+// Origin returns a ContextStoreOrigin protobuf containing the given id.
+func Origin(itemID ItemID) *eventpb.ContextStoreOrigin {
+	return &eventpb.ContextStoreOrigin{ItemID: itemID.Pb()}
+}
+
+// SignOrigin returns a SignOrigin protobuf containing moduleID and contextstore.Origin(itemID).
+func SignOrigin(moduleID t.ModuleID, itemID ItemID) *eventpb.SignOrigin {
+	return &eventpb.SignOrigin{
+		Module: moduleID.Pb(),
+		Type: &eventpb.SignOrigin_Contextstore{
+			Contextstore: Origin(itemID),
+		},
+	}
+}
+
+// SigVerOrigin returns a SigVerOrigin protobuf containing moduleID and contextstore.Origin(itemID).
+func SigVerOrigin(moduleID t.ModuleID, itemID ItemID) *eventpb.SigVerOrigin {
+	return &eventpb.SigVerOrigin{
+		Module: moduleID.Pb(),
+		Type: &eventpb.SigVerOrigin_Contextstore{
+			Contextstore: Origin(itemID),
+		},
+	}
+}
+
+// HashOrigin returns a HashOrigin protobuf containing moduleID and contextstore.Origin(itemID).
+func HashOrigin(moduleID t.ModuleID, itemID ItemID) *eventpb.HashOrigin {
+	return &eventpb.HashOrigin{
+		Module: moduleID.Pb(),
+		Type: &eventpb.HashOrigin_Contextstore{
+			Contextstore: Origin(itemID),
+		},
+	}
+}
diff --git a/pkg/contextstore/sequential.go b/pkg/contextstore/sequential.go
new file mode 100644
index 000000000..76637b17a
--- /dev/null
+++ b/pkg/contextstore/sequential.go
@@ -0,0 +1,49 @@
+package contextstore
+
+import "fmt"
+
+type sequentialContextStoreImpl[T any] struct {
+	nextID  ItemID
+	storage map[ItemID]T
+}
+
+// NewSequentialContextStore creates an empty ContextStore that can only be accessed sequentially.
+func NewSequentialContextStore[T any]() ContextStore[T] {
+	return &sequentialContextStoreImpl[T]{
+		storage: make(map[ItemID]T),
+	}
+}
+
+// Store stores the given data in the ContextStore and returns a unique id.
+// The data can be later recovered or disposed of using this id.
+func (s *sequentialContextStoreImpl[T]) Store(t T) ItemID {
+	id := s.nextID
+	s.nextID++
+
+	s.storage[id] = t
+	return id
+}
+
+// Recover returns the data stored under the provided id.
+// Note that the data will continue to exist in the ContextStore.
+// In order to dispose of the data, call s.Dispose(id) or s.RecoverAndDispose(id).
+func (s *sequentialContextStoreImpl[T]) Recover(id ItemID) T {
+	item, present := s.storage[id]
+	if !present {
+		panic(fmt.Errorf("item with id '%v' is not present in the ContextStore", id))
+	}
+
+	return item
+}
+
+// Dispose removes the data from the ContextStore.
+func (s *sequentialContextStoreImpl[T]) Dispose(id ItemID) {
+	delete(s.storage, id)
+}
+
+// RecoverAndDispose returns the data stored under the provided id and removes it from the ContextStore.
+func (s *sequentialContextStoreImpl[T]) RecoverAndDispose(id ItemID) T {
+	t := s.Recover(id)
+	s.Dispose(id)
+	return t
+}
diff --git a/pkg/pb/eventpb/eventpb.pb.go b/pkg/pb/eventpb/eventpb.pb.go
index 43a1ca062..c5c2bbce9 100644
--- a/pkg/pb/eventpb/eventpb.pb.go
+++ b/pkg/pb/eventpb/eventpb.pb.go
@@ -560,6 +560,53 @@ func (*Tick) Descriptor() ([]byte, []int) {
 	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{2}
 }
 
+type ContextStoreOrigin struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ItemID uint64 `protobuf:"varint,1,opt,name=itemID,proto3" json:"itemID,omitempty"`
+}
+
+func (x *ContextStoreOrigin) Reset() {
+	*x = ContextStoreOrigin{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_eventpb_eventpb_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ContextStoreOrigin) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ContextStoreOrigin) ProtoMessage() {}
+
+func (x *ContextStoreOrigin) ProtoReflect() protoreflect.Message {
+	mi := &file_eventpb_eventpb_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ContextStoreOrigin.ProtoReflect.Descriptor instead.
+func (*ContextStoreOrigin) Descriptor() ([]byte, []int) {
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *ContextStoreOrigin) GetItemID() uint64 {
+	if x != nil {
+		return x.ItemID
+	}
+	return 0
+}
+
 type HashRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -572,7 +619,7 @@ type HashRequest struct {
 func (x *HashRequest) Reset() {
 	*x = HashRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[3]
+		mi := &file_eventpb_eventpb_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -585,7 +632,7 @@ func (x *HashRequest) String() string {
 func (*HashRequest) ProtoMessage() {}
 
 func (x *HashRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[3]
+	mi := &file_eventpb_eventpb_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -598,7 +645,7 @@ func (x *HashRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HashRequest.ProtoReflect.Descriptor instead.
 func (*HashRequest) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{3}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *HashRequest) GetData() []*commonpb.HashData {
@@ -627,7 +674,7 @@ type HashResult struct {
 func (x *HashResult) Reset() {
 	*x = HashResult{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[4]
+		mi := &file_eventpb_eventpb_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -640,7 +687,7 @@ func (x *HashResult) String() string {
 func (*HashResult) ProtoMessage() {}
 
 func (x *HashResult) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[4]
+	mi := &file_eventpb_eventpb_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -653,7 +700,7 @@ func (x *HashResult) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HashResult.ProtoReflect.Descriptor instead.
 func (*HashResult) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{4}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *HashResult) GetDigests() [][]byte {
@@ -677,6 +724,7 @@ type HashOrigin struct {
 
 	Module string `protobuf:"bytes,1,opt,name=module,proto3" json:"module,omitempty"`
 	// Types that are assignable to Type:
+	//	*HashOrigin_Contextstore
 	//	*HashOrigin_Request
 	//	*HashOrigin_Iss
 	Type isHashOrigin_Type `protobuf_oneof:"type"`
@@ -685,7 +733,7 @@ type HashOrigin struct {
 func (x *HashOrigin) Reset() {
 	*x = HashOrigin{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[5]
+		mi := &file_eventpb_eventpb_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -698,7 +746,7 @@ func (x *HashOrigin) String() string {
 func (*HashOrigin) ProtoMessage() {}
 
 func (x *HashOrigin) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[5]
+	mi := &file_eventpb_eventpb_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -711,7 +759,7 @@ func (x *HashOrigin) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HashOrigin.ProtoReflect.Descriptor instead.
 func (*HashOrigin) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{5}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *HashOrigin) GetModule() string {
@@ -728,6 +776,13 @@ func (m *HashOrigin) GetType() isHashOrigin_Type {
 	return nil
 }
 
+func (x *HashOrigin) GetContextstore() *ContextStoreOrigin {
+	if x, ok := x.GetType().(*HashOrigin_Contextstore); ok {
+		return x.Contextstore
+	}
+	return nil
+}
+
 func (x *HashOrigin) GetRequest() *requestpb.Request {
 	if x, ok := x.GetType().(*HashOrigin_Request); ok {
 		return x.Request
@@ -746,14 +801,20 @@ type isHashOrigin_Type interface {
 	isHashOrigin_Type()
 }
 
+type HashOrigin_Contextstore struct {
+	Contextstore *ContextStoreOrigin `protobuf:"bytes,2,opt,name=contextstore,proto3,oneof"`
+}
+
 type HashOrigin_Request struct {
-	Request *requestpb.Request `protobuf:"bytes,2,opt,name=request,proto3,oneof"`
+	Request *requestpb.Request `protobuf:"bytes,3,opt,name=request,proto3,oneof"`
 }
 
 type HashOrigin_Iss struct {
-	Iss *isspb.ISSHashOrigin `protobuf:"bytes,3,opt,name=iss,proto3,oneof"`
+	Iss *isspb.ISSHashOrigin `protobuf:"bytes,4,opt,name=iss,proto3,oneof"`
 }
 
+func (*HashOrigin_Contextstore) isHashOrigin_Type() {}
+
 func (*HashOrigin_Request) isHashOrigin_Type() {}
 
 func (*HashOrigin_Iss) isHashOrigin_Type() {}
@@ -770,7 +831,7 @@ type SignRequest struct {
 func (x *SignRequest) Reset() {
 	*x = SignRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[6]
+		mi := &file_eventpb_eventpb_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -783,7 +844,7 @@ func (x *SignRequest) String() string {
 func (*SignRequest) ProtoMessage() {}
 
 func (x *SignRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[6]
+	mi := &file_eventpb_eventpb_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -796,7 +857,7 @@ func (x *SignRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SignRequest.ProtoReflect.Descriptor instead.
 func (*SignRequest) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{6}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *SignRequest) GetData() [][]byte {
@@ -825,7 +886,7 @@ type SignResult struct {
 func (x *SignResult) Reset() {
 	*x = SignResult{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[7]
+		mi := &file_eventpb_eventpb_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -838,7 +899,7 @@ func (x *SignResult) String() string {
 func (*SignResult) ProtoMessage() {}
 
 func (x *SignResult) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[7]
+	mi := &file_eventpb_eventpb_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -851,7 +912,7 @@ func (x *SignResult) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SignResult.ProtoReflect.Descriptor instead.
 func (*SignResult) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{7}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *SignResult) GetSignature() []byte {
@@ -875,6 +936,7 @@ type SignOrigin struct {
 
 	Module string `protobuf:"bytes,1,opt,name=module,proto3" json:"module,omitempty"`
 	// Types that are assignable to Type:
+	//	*SignOrigin_Contextstore
 	//	*SignOrigin_Iss
 	Type isSignOrigin_Type `protobuf_oneof:"type"`
 }
@@ -882,7 +944,7 @@ type SignOrigin struct {
 func (x *SignOrigin) Reset() {
 	*x = SignOrigin{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[8]
+		mi := &file_eventpb_eventpb_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -895,7 +957,7 @@ func (x *SignOrigin) String() string {
 func (*SignOrigin) ProtoMessage() {}
 
 func (x *SignOrigin) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[8]
+	mi := &file_eventpb_eventpb_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -908,7 +970,7 @@ func (x *SignOrigin) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SignOrigin.ProtoReflect.Descriptor instead.
 func (*SignOrigin) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{8}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *SignOrigin) GetModule() string {
@@ -925,6 +987,13 @@ func (m *SignOrigin) GetType() isSignOrigin_Type {
 	return nil
 }
 
+func (x *SignOrigin) GetContextstore() *ContextStoreOrigin {
+	if x, ok := x.GetType().(*SignOrigin_Contextstore); ok {
+		return x.Contextstore
+	}
+	return nil
+}
+
 func (x *SignOrigin) GetIss() *isspb.ISSSignOrigin {
 	if x, ok := x.GetType().(*SignOrigin_Iss); ok {
 		return x.Iss
@@ -936,10 +1005,16 @@ type isSignOrigin_Type interface {
 	isSignOrigin_Type()
 }
 
+type SignOrigin_Contextstore struct {
+	Contextstore *ContextStoreOrigin `protobuf:"bytes,2,opt,name=contextstore,proto3,oneof"`
+}
+
 type SignOrigin_Iss struct {
-	Iss *isspb.ISSSignOrigin `protobuf:"bytes,2,opt,name=iss,proto3,oneof"`
+	Iss *isspb.ISSSignOrigin `protobuf:"bytes,3,opt,name=iss,proto3,oneof"`
 }
 
+func (*SignOrigin_Contextstore) isSignOrigin_Type() {}
+
 func (*SignOrigin_Iss) isSignOrigin_Type() {}
 
 type SigVerData struct {
@@ -953,7 +1028,7 @@ type SigVerData struct {
 func (x *SigVerData) Reset() {
 	*x = SigVerData{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[9]
+		mi := &file_eventpb_eventpb_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -966,7 +1041,7 @@ func (x *SigVerData) String() string {
 func (*SigVerData) ProtoMessage() {}
 
 func (x *SigVerData) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[9]
+	mi := &file_eventpb_eventpb_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -979,7 +1054,7 @@ func (x *SigVerData) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SigVerData.ProtoReflect.Descriptor instead.
 func (*SigVerData) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{9}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *SigVerData) GetData() [][]byte {
@@ -1003,7 +1078,7 @@ type VerifyNodeSigs struct {
 func (x *VerifyNodeSigs) Reset() {
 	*x = VerifyNodeSigs{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[10]
+		mi := &file_eventpb_eventpb_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1016,7 +1091,7 @@ func (x *VerifyNodeSigs) String() string {
 func (*VerifyNodeSigs) ProtoMessage() {}
 
 func (x *VerifyNodeSigs) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[10]
+	mi := &file_eventpb_eventpb_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1029,7 +1104,7 @@ func (x *VerifyNodeSigs) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VerifyNodeSigs.ProtoReflect.Descriptor instead.
 func (*VerifyNodeSigs) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{10}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *VerifyNodeSigs) GetData() []*SigVerData {
@@ -1075,7 +1150,7 @@ type NodeSigsVerified struct {
 func (x *NodeSigsVerified) Reset() {
 	*x = NodeSigsVerified{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[11]
+		mi := &file_eventpb_eventpb_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1088,7 +1163,7 @@ func (x *NodeSigsVerified) String() string {
 func (*NodeSigsVerified) ProtoMessage() {}
 
 func (x *NodeSigsVerified) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[11]
+	mi := &file_eventpb_eventpb_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1101,7 +1176,7 @@ func (x *NodeSigsVerified) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use NodeSigsVerified.ProtoReflect.Descriptor instead.
 func (*NodeSigsVerified) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{11}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *NodeSigsVerified) GetOrigin() *SigVerOrigin {
@@ -1146,6 +1221,7 @@ type SigVerOrigin struct {
 
 	Module string `protobuf:"bytes,1,opt,name=module,proto3" json:"module,omitempty"`
 	// Types that are assignable to Type:
+	//	*SigVerOrigin_Contextstore
 	//	*SigVerOrigin_Iss
 	Type isSigVerOrigin_Type `protobuf_oneof:"type"`
 }
@@ -1153,7 +1229,7 @@ type SigVerOrigin struct {
 func (x *SigVerOrigin) Reset() {
 	*x = SigVerOrigin{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[12]
+		mi := &file_eventpb_eventpb_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1166,7 +1242,7 @@ func (x *SigVerOrigin) String() string {
 func (*SigVerOrigin) ProtoMessage() {}
 
 func (x *SigVerOrigin) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[12]
+	mi := &file_eventpb_eventpb_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1179,7 +1255,7 @@ func (x *SigVerOrigin) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SigVerOrigin.ProtoReflect.Descriptor instead.
 func (*SigVerOrigin) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{12}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *SigVerOrigin) GetModule() string {
@@ -1196,6 +1272,13 @@ func (m *SigVerOrigin) GetType() isSigVerOrigin_Type {
 	return nil
 }
 
+func (x *SigVerOrigin) GetContextstore() *ContextStoreOrigin {
+	if x, ok := x.GetType().(*SigVerOrigin_Contextstore); ok {
+		return x.Contextstore
+	}
+	return nil
+}
+
 func (x *SigVerOrigin) GetIss() *isspb.ISSSigVerOrigin {
 	if x, ok := x.GetType().(*SigVerOrigin_Iss); ok {
 		return x.Iss
@@ -1207,10 +1290,16 @@ type isSigVerOrigin_Type interface {
 	isSigVerOrigin_Type()
 }
 
+type SigVerOrigin_Contextstore struct {
+	Contextstore *ContextStoreOrigin `protobuf:"bytes,2,opt,name=contextstore,proto3,oneof"`
+}
+
 type SigVerOrigin_Iss struct {
-	Iss *isspb.ISSSigVerOrigin `protobuf:"bytes,2,opt,name=iss,proto3,oneof"`
+	Iss *isspb.ISSSigVerOrigin `protobuf:"bytes,3,opt,name=iss,proto3,oneof"`
 }
 
+func (*SigVerOrigin_Contextstore) isSigVerOrigin_Type() {}
+
 func (*SigVerOrigin_Iss) isSigVerOrigin_Type() {}
 
 type RequestReady struct {
@@ -1224,7 +1313,7 @@ type RequestReady struct {
 func (x *RequestReady) Reset() {
 	*x = RequestReady{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[13]
+		mi := &file_eventpb_eventpb_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1237,7 +1326,7 @@ func (x *RequestReady) String() string {
 func (*RequestReady) ProtoMessage() {}
 
 func (x *RequestReady) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[13]
+	mi := &file_eventpb_eventpb_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1250,7 +1339,7 @@ func (x *RequestReady) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RequestReady.ProtoReflect.Descriptor instead.
 func (*RequestReady) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{13}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *RequestReady) GetRequestRef() *requestpb.RequestRef {
@@ -1272,7 +1361,7 @@ type SendMessage struct {
 func (x *SendMessage) Reset() {
 	*x = SendMessage{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[14]
+		mi := &file_eventpb_eventpb_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1285,7 +1374,7 @@ func (x *SendMessage) String() string {
 func (*SendMessage) ProtoMessage() {}
 
 func (x *SendMessage) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[14]
+	mi := &file_eventpb_eventpb_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1298,7 +1387,7 @@ func (x *SendMessage) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SendMessage.ProtoReflect.Descriptor instead.
 func (*SendMessage) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{14}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *SendMessage) GetDestinations() []string {
@@ -1327,7 +1416,7 @@ type MessageReceived struct {
 func (x *MessageReceived) Reset() {
 	*x = MessageReceived{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[15]
+		mi := &file_eventpb_eventpb_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1340,7 +1429,7 @@ func (x *MessageReceived) String() string {
 func (*MessageReceived) ProtoMessage() {}
 
 func (x *MessageReceived) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[15]
+	mi := &file_eventpb_eventpb_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1353,7 +1442,7 @@ func (x *MessageReceived) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MessageReceived.ProtoReflect.Descriptor instead.
 func (*MessageReceived) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{15}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *MessageReceived) GetFrom() string {
@@ -1382,7 +1471,7 @@ type WALAppend struct {
 func (x *WALAppend) Reset() {
 	*x = WALAppend{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[16]
+		mi := &file_eventpb_eventpb_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1395,7 +1484,7 @@ func (x *WALAppend) String() string {
 func (*WALAppend) ProtoMessage() {}
 
 func (x *WALAppend) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[16]
+	mi := &file_eventpb_eventpb_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1408,7 +1497,7 @@ func (x *WALAppend) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WALAppend.ProtoReflect.Descriptor instead.
 func (*WALAppend) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{16}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *WALAppend) GetEvent() *Event {
@@ -1436,7 +1525,7 @@ type WALEntry struct {
 func (x *WALEntry) Reset() {
 	*x = WALEntry{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[17]
+		mi := &file_eventpb_eventpb_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1449,7 +1538,7 @@ func (x *WALEntry) String() string {
 func (*WALEntry) ProtoMessage() {}
 
 func (x *WALEntry) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[17]
+	mi := &file_eventpb_eventpb_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1462,7 +1551,7 @@ func (x *WALEntry) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WALEntry.ProtoReflect.Descriptor instead.
 func (*WALEntry) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{17}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *WALEntry) GetEvent() *Event {
@@ -1483,7 +1572,7 @@ type WALTruncate struct {
 func (x *WALTruncate) Reset() {
 	*x = WALTruncate{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[18]
+		mi := &file_eventpb_eventpb_proto_msgTypes[19]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1496,7 +1585,7 @@ func (x *WALTruncate) String() string {
 func (*WALTruncate) ProtoMessage() {}
 
 func (x *WALTruncate) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[18]
+	mi := &file_eventpb_eventpb_proto_msgTypes[19]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1509,7 +1598,7 @@ func (x *WALTruncate) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WALTruncate.ProtoReflect.Descriptor instead.
 func (*WALTruncate) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{18}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{19}
 }
 
 func (x *WALTruncate) GetRetentionIndex() uint64 {
@@ -1528,7 +1617,7 @@ type WALLoadAll struct {
 func (x *WALLoadAll) Reset() {
 	*x = WALLoadAll{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[19]
+		mi := &file_eventpb_eventpb_proto_msgTypes[20]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1541,7 +1630,7 @@ func (x *WALLoadAll) String() string {
 func (*WALLoadAll) ProtoMessage() {}
 
 func (x *WALLoadAll) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[19]
+	mi := &file_eventpb_eventpb_proto_msgTypes[20]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1554,7 +1643,7 @@ func (x *WALLoadAll) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WALLoadAll.ProtoReflect.Descriptor instead.
 func (*WALLoadAll) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{19}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{20}
 }
 
 type Deliver struct {
@@ -1569,7 +1658,7 @@ type Deliver struct {
 func (x *Deliver) Reset() {
 	*x = Deliver{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[20]
+		mi := &file_eventpb_eventpb_proto_msgTypes[21]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1582,7 +1671,7 @@ func (x *Deliver) String() string {
 func (*Deliver) ProtoMessage() {}
 
 func (x *Deliver) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[20]
+	mi := &file_eventpb_eventpb_proto_msgTypes[21]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1595,7 +1684,7 @@ func (x *Deliver) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Deliver.ProtoReflect.Descriptor instead.
 func (*Deliver) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{20}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *Deliver) GetSn() uint64 {
@@ -1624,7 +1713,7 @@ type VerifyRequestSig struct {
 func (x *VerifyRequestSig) Reset() {
 	*x = VerifyRequestSig{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[21]
+		mi := &file_eventpb_eventpb_proto_msgTypes[22]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1637,7 +1726,7 @@ func (x *VerifyRequestSig) String() string {
 func (*VerifyRequestSig) ProtoMessage() {}
 
 func (x *VerifyRequestSig) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[21]
+	mi := &file_eventpb_eventpb_proto_msgTypes[22]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1650,7 +1739,7 @@ func (x *VerifyRequestSig) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use VerifyRequestSig.ProtoReflect.Descriptor instead.
 func (*VerifyRequestSig) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{21}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{22}
 }
 
 func (x *VerifyRequestSig) GetRequestRef() *requestpb.RequestRef {
@@ -1680,7 +1769,7 @@ type RequestSigVerified struct {
 func (x *RequestSigVerified) Reset() {
 	*x = RequestSigVerified{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[22]
+		mi := &file_eventpb_eventpb_proto_msgTypes[23]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1693,7 +1782,7 @@ func (x *RequestSigVerified) String() string {
 func (*RequestSigVerified) ProtoMessage() {}
 
 func (x *RequestSigVerified) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[22]
+	mi := &file_eventpb_eventpb_proto_msgTypes[23]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1706,7 +1795,7 @@ func (x *RequestSigVerified) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RequestSigVerified.ProtoReflect.Descriptor instead.
 func (*RequestSigVerified) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{22}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{23}
 }
 
 func (x *RequestSigVerified) GetRequestRef() *requestpb.RequestRef {
@@ -1743,7 +1832,7 @@ type StoreVerifiedRequest struct {
 func (x *StoreVerifiedRequest) Reset() {
 	*x = StoreVerifiedRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[23]
+		mi := &file_eventpb_eventpb_proto_msgTypes[24]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1756,7 +1845,7 @@ func (x *StoreVerifiedRequest) String() string {
 func (*StoreVerifiedRequest) ProtoMessage() {}
 
 func (x *StoreVerifiedRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[23]
+	mi := &file_eventpb_eventpb_proto_msgTypes[24]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1769,7 +1858,7 @@ func (x *StoreVerifiedRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use StoreVerifiedRequest.ProtoReflect.Descriptor instead.
 func (*StoreVerifiedRequest) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{23}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *StoreVerifiedRequest) GetRequestRef() *requestpb.RequestRef {
@@ -1805,7 +1894,7 @@ type AppSnapshotRequest struct {
 func (x *AppSnapshotRequest) Reset() {
 	*x = AppSnapshotRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[24]
+		mi := &file_eventpb_eventpb_proto_msgTypes[25]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1818,7 +1907,7 @@ func (x *AppSnapshotRequest) String() string {
 func (*AppSnapshotRequest) ProtoMessage() {}
 
 func (x *AppSnapshotRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[24]
+	mi := &file_eventpb_eventpb_proto_msgTypes[25]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1831,7 +1920,7 @@ func (x *AppSnapshotRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AppSnapshotRequest.ProtoReflect.Descriptor instead.
 func (*AppSnapshotRequest) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{24}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{25}
 }
 
 func (x *AppSnapshotRequest) GetModule() string {
@@ -1860,7 +1949,7 @@ type AppSnapshot struct {
 func (x *AppSnapshot) Reset() {
 	*x = AppSnapshot{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[25]
+		mi := &file_eventpb_eventpb_proto_msgTypes[26]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1873,7 +1962,7 @@ func (x *AppSnapshot) String() string {
 func (*AppSnapshot) ProtoMessage() {}
 
 func (x *AppSnapshot) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[25]
+	mi := &file_eventpb_eventpb_proto_msgTypes[26]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1886,7 +1975,7 @@ func (x *AppSnapshot) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AppSnapshot.ProtoReflect.Descriptor instead.
 func (*AppSnapshot) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{25}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{26}
 }
 
 func (x *AppSnapshot) GetEpoch() uint64 {
@@ -1914,7 +2003,7 @@ type AppRestoreState struct {
 func (x *AppRestoreState) Reset() {
 	*x = AppRestoreState{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[26]
+		mi := &file_eventpb_eventpb_proto_msgTypes[27]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1927,7 +2016,7 @@ func (x *AppRestoreState) String() string {
 func (*AppRestoreState) ProtoMessage() {}
 
 func (x *AppRestoreState) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[26]
+	mi := &file_eventpb_eventpb_proto_msgTypes[27]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1940,7 +2029,7 @@ func (x *AppRestoreState) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AppRestoreState.ProtoReflect.Descriptor instead.
 func (*AppRestoreState) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{26}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{27}
 }
 
 func (x *AppRestoreState) GetData() []byte {
@@ -1962,7 +2051,7 @@ type TimerDelay struct {
 func (x *TimerDelay) Reset() {
 	*x = TimerDelay{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[27]
+		mi := &file_eventpb_eventpb_proto_msgTypes[28]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1975,7 +2064,7 @@ func (x *TimerDelay) String() string {
 func (*TimerDelay) ProtoMessage() {}
 
 func (x *TimerDelay) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[27]
+	mi := &file_eventpb_eventpb_proto_msgTypes[28]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1988,7 +2077,7 @@ func (x *TimerDelay) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TimerDelay.ProtoReflect.Descriptor instead.
 func (*TimerDelay) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{27}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{28}
 }
 
 func (x *TimerDelay) GetEvents() []*Event {
@@ -2018,7 +2107,7 @@ type TimerRepeat struct {
 func (x *TimerRepeat) Reset() {
 	*x = TimerRepeat{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[28]
+		mi := &file_eventpb_eventpb_proto_msgTypes[29]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2031,7 +2120,7 @@ func (x *TimerRepeat) String() string {
 func (*TimerRepeat) ProtoMessage() {}
 
 func (x *TimerRepeat) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[28]
+	mi := &file_eventpb_eventpb_proto_msgTypes[29]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2044,7 +2133,7 @@ func (x *TimerRepeat) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TimerRepeat.ProtoReflect.Descriptor instead.
 func (*TimerRepeat) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{28}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{29}
 }
 
 func (x *TimerRepeat) GetEvents() []*Event {
@@ -2079,7 +2168,7 @@ type TimerGarbageCollect struct {
 func (x *TimerGarbageCollect) Reset() {
 	*x = TimerGarbageCollect{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_eventpb_eventpb_proto_msgTypes[29]
+		mi := &file_eventpb_eventpb_proto_msgTypes[30]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -2092,7 +2181,7 @@ func (x *TimerGarbageCollect) String() string {
 func (*TimerGarbageCollect) ProtoMessage() {}
 
 func (x *TimerGarbageCollect) ProtoReflect() protoreflect.Message {
-	mi := &file_eventpb_eventpb_proto_msgTypes[29]
+	mi := &file_eventpb_eventpb_proto_msgTypes[30]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -2105,7 +2194,7 @@ func (x *TimerGarbageCollect) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TimerGarbageCollect.ProtoReflect.Descriptor instead.
 func (*TimerGarbageCollect) Descriptor() ([]byte, []int) {
-	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{29}
+	return file_eventpb_eventpb_proto_rawDescGZIP(), []int{30}
 }
 
 func (x *TimerGarbageCollect) GetRetentionIndex() uint64 {
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 }
 
 var (
@@ -2400,105 +2504,109 @@ func file_eventpb_eventpb_proto_rawDescGZIP() []byte {
 	return file_eventpb_eventpb_proto_rawDescData
 }
 
-var file_eventpb_eventpb_proto_msgTypes = make([]protoimpl.MessageInfo, 30)
+var file_eventpb_eventpb_proto_msgTypes = make([]protoimpl.MessageInfo, 31)
 var file_eventpb_eventpb_proto_goTypes = []interface{}{
 	(*Event)(nil),                 // 0: eventpb.Event
 	(*Init)(nil),                  // 1: eventpb.Init
 	(*Tick)(nil),                  // 2: eventpb.Tick
-	(*HashRequest)(nil),           // 3: eventpb.HashRequest
-	(*HashResult)(nil),            // 4: eventpb.HashResult
-	(*HashOrigin)(nil),            // 5: eventpb.HashOrigin
-	(*SignRequest)(nil),           // 6: eventpb.SignRequest
-	(*SignResult)(nil),            // 7: eventpb.SignResult
-	(*SignOrigin)(nil),            // 8: eventpb.SignOrigin
-	(*SigVerData)(nil),            // 9: eventpb.SigVerData
-	(*VerifyNodeSigs)(nil),        // 10: eventpb.VerifyNodeSigs
-	(*NodeSigsVerified)(nil),      // 11: eventpb.NodeSigsVerified
-	(*SigVerOrigin)(nil),          // 12: eventpb.SigVerOrigin
-	(*RequestReady)(nil),          // 13: eventpb.RequestReady
-	(*SendMessage)(nil),           // 14: eventpb.SendMessage
-	(*MessageReceived)(nil),       // 15: eventpb.MessageReceived
-	(*WALAppend)(nil),             // 16: eventpb.WALAppend
-	(*WALEntry)(nil),              // 17: eventpb.WALEntry
-	(*WALTruncate)(nil),           // 18: eventpb.WALTruncate
-	(*WALLoadAll)(nil),            // 19: eventpb.WALLoadAll
-	(*Deliver)(nil),               // 20: eventpb.Deliver
-	(*VerifyRequestSig)(nil),      // 21: eventpb.VerifyRequestSig
-	(*RequestSigVerified)(nil),    // 22: eventpb.RequestSigVerified
-	(*StoreVerifiedRequest)(nil),  // 23: eventpb.StoreVerifiedRequest
-	(*AppSnapshotRequest)(nil),    // 24: eventpb.AppSnapshotRequest
-	(*AppSnapshot)(nil),           // 25: eventpb.AppSnapshot
-	(*AppRestoreState)(nil),       // 26: eventpb.AppRestoreState
-	(*TimerDelay)(nil),            // 27: eventpb.TimerDelay
-	(*TimerRepeat)(nil),           // 28: eventpb.TimerRepeat
-	(*TimerGarbageCollect)(nil),   // 29: eventpb.TimerGarbageCollect
-	(*requestpb.Request)(nil),     // 30: requestpb.Request
-	(*isspb.ISSEvent)(nil),        // 31: isspb.ISSEvent
-	(*commonpb.HashData)(nil),     // 32: commonpb.HashData
-	(*isspb.ISSHashOrigin)(nil),   // 33: isspb.ISSHashOrigin
-	(*isspb.ISSSignOrigin)(nil),   // 34: isspb.ISSSignOrigin
-	(*isspb.ISSSigVerOrigin)(nil), // 35: isspb.ISSSigVerOrigin
-	(*requestpb.RequestRef)(nil),  // 36: requestpb.RequestRef
-	(*messagepb.Message)(nil),     // 37: messagepb.Message
-	(*requestpb.Batch)(nil),       // 38: requestpb.Batch
+	(*ContextStoreOrigin)(nil),    // 3: eventpb.ContextStoreOrigin
+	(*HashRequest)(nil),           // 4: eventpb.HashRequest
+	(*HashResult)(nil),            // 5: eventpb.HashResult
+	(*HashOrigin)(nil),            // 6: eventpb.HashOrigin
+	(*SignRequest)(nil),           // 7: eventpb.SignRequest
+	(*SignResult)(nil),            // 8: eventpb.SignResult
+	(*SignOrigin)(nil),            // 9: eventpb.SignOrigin
+	(*SigVerData)(nil),            // 10: eventpb.SigVerData
+	(*VerifyNodeSigs)(nil),        // 11: eventpb.VerifyNodeSigs
+	(*NodeSigsVerified)(nil),      // 12: eventpb.NodeSigsVerified
+	(*SigVerOrigin)(nil),          // 13: eventpb.SigVerOrigin
+	(*RequestReady)(nil),          // 14: eventpb.RequestReady
+	(*SendMessage)(nil),           // 15: eventpb.SendMessage
+	(*MessageReceived)(nil),       // 16: eventpb.MessageReceived
+	(*WALAppend)(nil),             // 17: eventpb.WALAppend
+	(*WALEntry)(nil),              // 18: eventpb.WALEntry
+	(*WALTruncate)(nil),           // 19: eventpb.WALTruncate
+	(*WALLoadAll)(nil),            // 20: eventpb.WALLoadAll
+	(*Deliver)(nil),               // 21: eventpb.Deliver
+	(*VerifyRequestSig)(nil),      // 22: eventpb.VerifyRequestSig
+	(*RequestSigVerified)(nil),    // 23: eventpb.RequestSigVerified
+	(*StoreVerifiedRequest)(nil),  // 24: eventpb.StoreVerifiedRequest
+	(*AppSnapshotRequest)(nil),    // 25: eventpb.AppSnapshotRequest
+	(*AppSnapshot)(nil),           // 26: eventpb.AppSnapshot
+	(*AppRestoreState)(nil),       // 27: eventpb.AppRestoreState
+	(*TimerDelay)(nil),            // 28: eventpb.TimerDelay
+	(*TimerRepeat)(nil),           // 29: eventpb.TimerRepeat
+	(*TimerGarbageCollect)(nil),   // 30: eventpb.TimerGarbageCollect
+	(*requestpb.Request)(nil),     // 31: requestpb.Request
+	(*isspb.ISSEvent)(nil),        // 32: isspb.ISSEvent
+	(*commonpb.HashData)(nil),     // 33: commonpb.HashData
+	(*isspb.ISSHashOrigin)(nil),   // 34: isspb.ISSHashOrigin
+	(*isspb.ISSSignOrigin)(nil),   // 35: isspb.ISSSignOrigin
+	(*isspb.ISSSigVerOrigin)(nil), // 36: isspb.ISSSigVerOrigin
+	(*requestpb.RequestRef)(nil),  // 37: requestpb.RequestRef
+	(*messagepb.Message)(nil),     // 38: messagepb.Message
+	(*requestpb.Batch)(nil),       // 39: requestpb.Batch
 }
 var file_eventpb_eventpb_proto_depIdxs = []int32{
 	1,  // 0: eventpb.Event.init:type_name -> eventpb.Init
 	2,  // 1: eventpb.Event.tick:type_name -> eventpb.Tick
-	16, // 2: eventpb.Event.wal_append:type_name -> eventpb.WALAppend
-	17, // 3: eventpb.Event.wal_entry:type_name -> eventpb.WALEntry
-	18, // 4: eventpb.Event.wal_truncate:type_name -> eventpb.WALTruncate
-	19, // 5: eventpb.Event.wal_load_all:type_name -> eventpb.WALLoadAll
-	30, // 6: eventpb.Event.request:type_name -> requestpb.Request
-	3,  // 7: eventpb.Event.hash_request:type_name -> eventpb.HashRequest
-	4,  // 8: eventpb.Event.hash_result:type_name -> eventpb.HashResult
-	6,  // 9: eventpb.Event.sign_request:type_name -> eventpb.SignRequest
-	7,  // 10: eventpb.Event.sign_result:type_name -> eventpb.SignResult
-	10, // 11: eventpb.Event.verify_node_sigs:type_name -> eventpb.VerifyNodeSigs
-	11, // 12: eventpb.Event.node_sigs_verified:type_name -> eventpb.NodeSigsVerified
-	13, // 13: eventpb.Event.request_ready:type_name -> eventpb.RequestReady
-	14, // 14: eventpb.Event.send_message:type_name -> eventpb.SendMessage
-	15, // 15: eventpb.Event.message_received:type_name -> eventpb.MessageReceived
-	20, // 16: eventpb.Event.deliver:type_name -> eventpb.Deliver
-	31, // 17: eventpb.Event.iss:type_name -> isspb.ISSEvent
-	21, // 18: eventpb.Event.verify_request_sig:type_name -> eventpb.VerifyRequestSig
-	22, // 19: eventpb.Event.request_sig_verified:type_name -> eventpb.RequestSigVerified
-	23, // 20: eventpb.Event.store_verified_request:type_name -> eventpb.StoreVerifiedRequest
-	24, // 21: eventpb.Event.app_snapshot_request:type_name -> eventpb.AppSnapshotRequest
-	25, // 22: eventpb.Event.app_snapshot:type_name -> eventpb.AppSnapshot
-	26, // 23: eventpb.Event.app_restore_state:type_name -> eventpb.AppRestoreState
-	27, // 24: eventpb.Event.timer_delay:type_name -> eventpb.TimerDelay
-	28, // 25: eventpb.Event.timer_repeat:type_name -> eventpb.TimerRepeat
-	29, // 26: eventpb.Event.timer_garbage_collect:type_name -> eventpb.TimerGarbageCollect
+	17, // 2: eventpb.Event.wal_append:type_name -> eventpb.WALAppend
+	18, // 3: eventpb.Event.wal_entry:type_name -> eventpb.WALEntry
+	19, // 4: eventpb.Event.wal_truncate:type_name -> eventpb.WALTruncate
+	20, // 5: eventpb.Event.wal_load_all:type_name -> eventpb.WALLoadAll
+	31, // 6: eventpb.Event.request:type_name -> requestpb.Request
+	4,  // 7: eventpb.Event.hash_request:type_name -> eventpb.HashRequest
+	5,  // 8: eventpb.Event.hash_result:type_name -> eventpb.HashResult
+	7,  // 9: eventpb.Event.sign_request:type_name -> eventpb.SignRequest
+	8,  // 10: eventpb.Event.sign_result:type_name -> eventpb.SignResult
+	11, // 11: eventpb.Event.verify_node_sigs:type_name -> eventpb.VerifyNodeSigs
+	12, // 12: eventpb.Event.node_sigs_verified:type_name -> eventpb.NodeSigsVerified
+	14, // 13: eventpb.Event.request_ready:type_name -> eventpb.RequestReady
+	15, // 14: eventpb.Event.send_message:type_name -> eventpb.SendMessage
+	16, // 15: eventpb.Event.message_received:type_name -> eventpb.MessageReceived
+	21, // 16: eventpb.Event.deliver:type_name -> eventpb.Deliver
+	32, // 17: eventpb.Event.iss:type_name -> isspb.ISSEvent
+	22, // 18: eventpb.Event.verify_request_sig:type_name -> eventpb.VerifyRequestSig
+	23, // 19: eventpb.Event.request_sig_verified:type_name -> eventpb.RequestSigVerified
+	24, // 20: eventpb.Event.store_verified_request:type_name -> eventpb.StoreVerifiedRequest
+	25, // 21: eventpb.Event.app_snapshot_request:type_name -> eventpb.AppSnapshotRequest
+	26, // 22: eventpb.Event.app_snapshot:type_name -> eventpb.AppSnapshot
+	27, // 23: eventpb.Event.app_restore_state:type_name -> eventpb.AppRestoreState
+	28, // 24: eventpb.Event.timer_delay:type_name -> eventpb.TimerDelay
+	29, // 25: eventpb.Event.timer_repeat:type_name -> eventpb.TimerRepeat
+	30, // 26: eventpb.Event.timer_garbage_collect:type_name -> eventpb.TimerGarbageCollect
 	0,  // 27: eventpb.Event.next:type_name -> eventpb.Event
-	32, // 28: eventpb.HashRequest.data:type_name -> commonpb.HashData
-	5,  // 29: eventpb.HashRequest.origin:type_name -> eventpb.HashOrigin
-	5,  // 30: eventpb.HashResult.origin:type_name -> eventpb.HashOrigin
-	30, // 31: eventpb.HashOrigin.request:type_name -> requestpb.Request
-	33, // 32: eventpb.HashOrigin.iss:type_name -> isspb.ISSHashOrigin
-	8,  // 33: eventpb.SignRequest.origin:type_name -> eventpb.SignOrigin
-	8,  // 34: eventpb.SignResult.origin:type_name -> eventpb.SignOrigin
-	34, // 35: eventpb.SignOrigin.iss:type_name -> isspb.ISSSignOrigin
-	9,  // 36: eventpb.VerifyNodeSigs.data:type_name -> eventpb.SigVerData
-	12, // 37: eventpb.VerifyNodeSigs.origin:type_name -> eventpb.SigVerOrigin
-	12, // 38: eventpb.NodeSigsVerified.origin:type_name -> eventpb.SigVerOrigin
-	35, // 39: eventpb.SigVerOrigin.iss:type_name -> isspb.ISSSigVerOrigin
-	36, // 40: eventpb.RequestReady.request_ref:type_name -> requestpb.RequestRef
-	37, // 41: eventpb.SendMessage.msg:type_name -> messagepb.Message
-	37, // 42: eventpb.MessageReceived.msg:type_name -> messagepb.Message
-	0,  // 43: eventpb.WALAppend.event:type_name -> eventpb.Event
-	0,  // 44: eventpb.WALEntry.event:type_name -> eventpb.Event
-	38, // 45: eventpb.Deliver.batch:type_name -> requestpb.Batch
-	36, // 46: eventpb.VerifyRequestSig.request_ref:type_name -> requestpb.RequestRef
-	36, // 47: eventpb.RequestSigVerified.request_ref:type_name -> requestpb.RequestRef
-	36, // 48: eventpb.StoreVerifiedRequest.request_ref:type_name -> requestpb.RequestRef
-	0,  // 49: eventpb.TimerDelay.events:type_name -> eventpb.Event
-	0,  // 50: eventpb.TimerRepeat.events:type_name -> eventpb.Event
-	51, // [51:51] is the sub-list for method output_type
-	51, // [51:51] is the sub-list for method input_type
-	51, // [51:51] is the sub-list for extension type_name
-	51, // [51:51] is the sub-list for extension extendee
-	0,  // [0:51] is the sub-list for field type_name
+	33, // 28: eventpb.HashRequest.data:type_name -> commonpb.HashData
+	6,  // 29: eventpb.HashRequest.origin:type_name -> eventpb.HashOrigin
+	6,  // 30: eventpb.HashResult.origin:type_name -> eventpb.HashOrigin
+	3,  // 31: eventpb.HashOrigin.contextstore:type_name -> eventpb.ContextStoreOrigin
+	31, // 32: eventpb.HashOrigin.request:type_name -> requestpb.Request
+	34, // 33: eventpb.HashOrigin.iss:type_name -> isspb.ISSHashOrigin
+	9,  // 34: eventpb.SignRequest.origin:type_name -> eventpb.SignOrigin
+	9,  // 35: eventpb.SignResult.origin:type_name -> eventpb.SignOrigin
+	3,  // 36: eventpb.SignOrigin.contextstore:type_name -> eventpb.ContextStoreOrigin
+	35, // 37: eventpb.SignOrigin.iss:type_name -> isspb.ISSSignOrigin
+	10, // 38: eventpb.VerifyNodeSigs.data:type_name -> eventpb.SigVerData
+	13, // 39: eventpb.VerifyNodeSigs.origin:type_name -> eventpb.SigVerOrigin
+	13, // 40: eventpb.NodeSigsVerified.origin:type_name -> eventpb.SigVerOrigin
+	3,  // 41: eventpb.SigVerOrigin.contextstore:type_name -> eventpb.ContextStoreOrigin
+	36, // 42: eventpb.SigVerOrigin.iss:type_name -> isspb.ISSSigVerOrigin
+	37, // 43: eventpb.RequestReady.request_ref:type_name -> requestpb.RequestRef
+	38, // 44: eventpb.SendMessage.msg:type_name -> messagepb.Message
+	38, // 45: eventpb.MessageReceived.msg:type_name -> messagepb.Message
+	0,  // 46: eventpb.WALAppend.event:type_name -> eventpb.Event
+	0,  // 47: eventpb.WALEntry.event:type_name -> eventpb.Event
+	39, // 48: eventpb.Deliver.batch:type_name -> requestpb.Batch
+	37, // 49: eventpb.VerifyRequestSig.request_ref:type_name -> requestpb.RequestRef
+	37, // 50: eventpb.RequestSigVerified.request_ref:type_name -> requestpb.RequestRef
+	37, // 51: eventpb.StoreVerifiedRequest.request_ref:type_name -> requestpb.RequestRef
+	0,  // 52: eventpb.TimerDelay.events:type_name -> eventpb.Event
+	0,  // 53: eventpb.TimerRepeat.events:type_name -> eventpb.Event
+	54, // [54:54] is the sub-list for method output_type
+	54, // [54:54] is the sub-list for method input_type
+	54, // [54:54] is the sub-list for extension type_name
+	54, // [54:54] is the sub-list for extension extendee
+	0,  // [0:54] is the sub-list for field type_name
 }
 
 func init() { file_eventpb_eventpb_proto_init() }
@@ -2544,7 +2652,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HashRequest); i {
+			switch v := v.(*ContextStoreOrigin); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2556,7 +2664,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HashResult); i {
+			switch v := v.(*HashRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2568,7 +2676,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*HashOrigin); i {
+			switch v := v.(*HashResult); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2580,7 +2688,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SignRequest); i {
+			switch v := v.(*HashOrigin); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2592,7 +2700,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SignResult); i {
+			switch v := v.(*SignRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2604,7 +2712,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SignOrigin); i {
+			switch v := v.(*SignResult); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2616,7 +2724,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SigVerData); i {
+			switch v := v.(*SignOrigin); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2628,7 +2736,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VerifyNodeSigs); i {
+			switch v := v.(*SigVerData); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2640,7 +2748,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*NodeSigsVerified); i {
+			switch v := v.(*VerifyNodeSigs); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2652,7 +2760,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SigVerOrigin); i {
+			switch v := v.(*NodeSigsVerified); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2664,7 +2772,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RequestReady); i {
+			switch v := v.(*SigVerOrigin); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2676,7 +2784,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SendMessage); i {
+			switch v := v.(*RequestReady); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2688,7 +2796,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MessageReceived); i {
+			switch v := v.(*SendMessage); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2700,7 +2808,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WALAppend); i {
+			switch v := v.(*MessageReceived); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2712,7 +2820,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WALEntry); i {
+			switch v := v.(*WALAppend); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2724,7 +2832,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WALTruncate); i {
+			switch v := v.(*WALEntry); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2736,7 +2844,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WALLoadAll); i {
+			switch v := v.(*WALTruncate); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2748,7 +2856,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Deliver); i {
+			switch v := v.(*WALLoadAll); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2760,7 +2868,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*VerifyRequestSig); i {
+			switch v := v.(*Deliver); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2772,7 +2880,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RequestSigVerified); i {
+			switch v := v.(*VerifyRequestSig); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2784,7 +2892,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*StoreVerifiedRequest); i {
+			switch v := v.(*RequestSigVerified); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2796,7 +2904,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AppSnapshotRequest); i {
+			switch v := v.(*StoreVerifiedRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2808,7 +2916,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AppSnapshot); i {
+			switch v := v.(*AppSnapshotRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2820,7 +2928,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AppRestoreState); i {
+			switch v := v.(*AppSnapshot); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2832,7 +2940,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TimerDelay); i {
+			switch v := v.(*AppRestoreState); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2844,7 +2952,7 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TimerRepeat); i {
+			switch v := v.(*TimerDelay); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2856,6 +2964,18 @@ func file_eventpb_eventpb_proto_init() {
 			}
 		}
 		file_eventpb_eventpb_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TimerRepeat); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_eventpb_eventpb_proto_msgTypes[30].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*TimerGarbageCollect); i {
 			case 0:
 				return &v.state
@@ -2897,14 +3017,17 @@ func file_eventpb_eventpb_proto_init() {
 		(*Event_TimerRepeat)(nil),
 		(*Event_TimerGarbageCollect)(nil),
 	}
-	file_eventpb_eventpb_proto_msgTypes[5].OneofWrappers = []interface{}{
+	file_eventpb_eventpb_proto_msgTypes[6].OneofWrappers = []interface{}{
+		(*HashOrigin_Contextstore)(nil),
 		(*HashOrigin_Request)(nil),
 		(*HashOrigin_Iss)(nil),
 	}
-	file_eventpb_eventpb_proto_msgTypes[8].OneofWrappers = []interface{}{
+	file_eventpb_eventpb_proto_msgTypes[9].OneofWrappers = []interface{}{
+		(*SignOrigin_Contextstore)(nil),
 		(*SignOrigin_Iss)(nil),
 	}
-	file_eventpb_eventpb_proto_msgTypes[12].OneofWrappers = []interface{}{
+	file_eventpb_eventpb_proto_msgTypes[13].OneofWrappers = []interface{}{
+		(*SigVerOrigin_Contextstore)(nil),
 		(*SigVerOrigin_Iss)(nil),
 	}
 	type x struct{}
@@ -2913,7 +3036,7 @@ func file_eventpb_eventpb_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_eventpb_eventpb_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   30,
+			NumMessages:   31,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/protos/eventpb/eventpb.proto b/protos/eventpb/eventpb.proto
index 194c9e8a9..f5c7c68e8 100644
--- a/protos/eventpb/eventpb.proto
+++ b/protos/eventpb/eventpb.proto
@@ -63,6 +63,10 @@ message Init {}
 
 message Tick {}
 
+message ContextStoreOrigin {
+  uint64 itemID = 1;
+}
+
 message HashRequest {
   repeated commonpb.HashData data   = 1;
   HashOrigin                 origin = 2;
@@ -76,8 +80,9 @@ message HashResult {
 message HashOrigin {
   string module = 1;
   oneof type {
-    requestpb.Request   request  = 2;
-    isspb.ISSHashOrigin iss      = 3;
+    ContextStoreOrigin  contextstore = 2;
+    requestpb.Request   request      = 3;
+    isspb.ISSHashOrigin iss          = 4;
   }
 }
 
@@ -94,7 +99,8 @@ message SignResult {
 message SignOrigin {
   string module = 1;
   oneof type {
-    isspb.ISSSignOrigin iss = 2;
+    ContextStoreOrigin  contextstore = 2;
+    isspb.ISSSignOrigin iss          = 3;
   }
 }
 
@@ -120,7 +126,8 @@ message NodeSigsVerified {
 message SigVerOrigin {
   string module = 1;
   oneof type {
-    isspb.ISSSigVerOrigin iss = 2;
+    ContextStoreOrigin    contextstore = 2;
+    isspb.ISSSigVerOrigin iss          = 3;
   }
 }