diff --git a/log.go b/log.go
index 52cbc38bf297..7732d7db8f29 100644
--- a/log.go
+++ b/log.go
@@ -223,8 +223,8 @@ func (el *eventLogger) SetTags(ctx context.Context, tags map[string]interface{})
 		log.Errorf("SetTags with no Span in context called on %s:%d", path.Base(file), line)
 		return
 	}
-	for k := range tags {
-		span.SetTag(k, tags[k])
+	for k, v := range tags {
+		span.SetTag(k, v)
 	}
 }
 
diff --git a/log_test.go b/log_test.go
index 2fd15e2c5378..46ac7372592d 100644
--- a/log_test.go
+++ b/log_test.go
@@ -53,6 +53,8 @@ func TestSingleEvent(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.TraceID)
+	assertNotZero(t, ls.SpanID)
 }
 
 func TestSingleEventWithErr(t *testing.T) {
@@ -88,6 +90,8 @@ func TestSingleEventWithErr(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.TraceID)
+	assertNotZero(t, ls.SpanID)
 }
 
 func TestEventWithTag(t *testing.T) {
@@ -122,6 +126,8 @@ func TestEventWithTag(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.TraceID)
+	assertNotZero(t, ls.SpanID)
 }
 
 func TestEventWithTags(t *testing.T) {
@@ -160,6 +166,8 @@ func TestEventWithTags(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.TraceID)
+	assertNotZero(t, ls.SpanID)
 }
 
 func TestEventWithLogs(t *testing.T) {
@@ -204,6 +212,8 @@ func TestEventWithLogs(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.TraceID)
+	assertNotZero(t, ls.SpanID)
 }
 
 func TestMultiEvent(t *testing.T) {
@@ -238,11 +248,14 @@ func TestMultiEvent(t *testing.T) {
 	assertEqual(t, "e2", e2.Operation)
 	assertEqual(t, "test", e2.Tags["system"])
 	assertNotZero(t, e2.Duration)
+	assertEqual(t, e1.TraceID, e2.TraceID)
 
 	er := getEvent(evtDecoder)
 	assertEqual(t, "root", er.Operation)
 	assertEqual(t, "test", er.Tags["system"])
 	assertNotZero(t, er.Start)
+	assertNotZero(t, er.TraceID)
+	assertNotZero(t, er.SpanID)
 
 }
 
@@ -288,7 +301,9 @@ func TestEventSerialization(t *testing.T) {
 	assertEqual(t, "recv", e.Operation)
 	assertEqual(t, "test", e.Tags["system"])
 	assertNotZero(t, e.Start)
-	assertNotZero(t, e.Start)
+	assertNotZero(t, e.Duration)
+	assertNotZero(t, e.TraceID)
+	assertNotZero(t, e.SpanID)
 
 }
 
@@ -347,6 +362,8 @@ func TestEventBegin(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.SpanID)
+	assertNotZero(t, ls.TraceID)
 }
 
 func TestEventBeginWithErr(t *testing.T) {
@@ -385,4 +402,6 @@ func TestEventBeginWithErr(t *testing.T) {
 	// greater than zero should work for now
 	assertNotZero(t, ls.Duration)
 	assertNotZero(t, ls.Start)
+	assertNotZero(t, ls.SpanID)
+	assertNotZero(t, ls.TraceID)
 }
diff --git a/tracer/recorder.go b/tracer/recorder.go
index 12121f29594b..60ed1f8cb27f 100644
--- a/tracer/recorder.go
+++ b/tracer/recorder.go
@@ -27,11 +27,14 @@ func NewLoggableRecorder() *LoggableSpanRecorder {
 
 // Loggable Representation of a span, treated as an event log
 type LoggableSpan struct {
-	Operation string         `json:"Operation"`
-	Start     time.Time      `json:"Start"`
-	Duration  time.Duration  `json:"Duration"`
-	Tags      opentrace.Tags `json:"Tags"`
-	Logs      []SpanLog      `json:"Logs"`
+	TraceID      uint64         `json:"TraceID"`
+	SpanID       uint64         `json:"SpanID"`
+	ParentSpanID uint64         `json:"ParentSpanID"`
+	Operation    string         `json:"Operation"`
+	Start        time.Time      `json:"Start"`
+	Duration     time.Duration  `json:"Duration"`
+	Tags         opentrace.Tags `json:"Tags"`
+	Logs         []SpanLog      `json:"Logs"`
 }
 
 type SpanLog struct {
@@ -63,11 +66,14 @@ func (r *LoggableSpanRecorder) RecordSpan(span RawSpan) {
 	}
 
 	spanlog := &LoggableSpan{
-		Operation: span.Operation,
-		Start:     span.Start,
-		Duration:  span.Duration,
-		Tags:      span.Tags,
-		Logs:      sl,
+		TraceID:      span.Context.TraceID,
+		SpanID:       span.Context.SpanID,
+		ParentSpanID: span.ParentSpanID,
+		Operation:    span.Operation,
+		Start:        span.Start,
+		Duration:     span.Duration,
+		Tags:         span.Tags,
+		Logs:         sl,
 	}
 
 	out, err := json.Marshal(spanlog)