diff --git a/go/delivery/control_records_test.go b/go/delivery/control_records_test.go
index b41631c..94683f4 100644
--- a/go/delivery/control_records_test.go
+++ b/go/delivery/control_records_test.go
@@ -76,23 +76,27 @@ func TestTheControlRecordsReadTheirWritersValues(t *testing.T) {
 	}
 	// ADR 0571 clause 1: the builder's log, a start and an end, and the duration between them.
 	at := time.Date(2026, 10, 29, 22, 0, 0, 0, time.UTC)
-	start := BuildLogEntry{Event: BuildStartedEvent, Module: "letta", FP: "src2:a", Source: "abc", Node: "ace", At: at}
+	start := BuildLogEntry{Event: BuildStartedEvent, Module: "letta", FP: "src2:a", Source: "abc", Repository: "novox/mesh-catalog",
+		Directory: "modules/letta", Commit: "abc123", Node: "ace", At: at}
 	end := start
 	end.Event, end.At, end.Outcome, end.Artifacts = BuildEndedEvent, at.Add(3*time.Minute), "done", []BuiltDigest{{Name: "image", Digest: "sha256:1"}}
 	for _, e := range []BuildLogEntry{start, end} {
 		raw, err := EncodeBuildLogEntry(e)
 		back, derr := DecodeBuildLogEntry(raw)
-		if err != nil || derr != nil || back.Event != e.Event || back.Outcome != e.Outcome {
+		if err != nil || derr != nil || back.Event != e.Event || back.Outcome != e.Outcome || back.Directory != "modules/letta" ||
+			back.Repository != "novox/mesh-catalog" || back.Commit != "abc123" {
 			t.Errorf("%s read back as %+v, %v %v", e.Event, back, err, derr)
 		}
 	}
 	if d, ok := BuildDuration(start, end); !ok || d != 3*time.Minute {
 		t.Errorf("the build took %s, %v", d, ok)
 	}
-	bad := end
-	bad.Outcome = ""
-	if _, err := EncodeBuildLogEntry(bad); err == nil {
-		t.Error("an end with no outcome was encoded")
+	for _, edit := range []func(*BuildLogEntry){func(e *BuildLogEntry) { e.Outcome = "" }, func(e *BuildLogEntry) { e.Commit = "" }} {
+		bad := end
+		edit(&bad)
+		if _, err := EncodeBuildLogEntry(bad); err == nil {
+			t.Errorf("%+v was encoded", bad)
+		}
 	}
 	if k, err := HeldValueKey("novox/mesh-catalog#42", "novox", "mail", "quota"); k != "novox.mesh-catalog.42.novox.mail.quota" || err != nil {
 		t.Errorf("a held value's key is %q, %v", k, err)
diff --git a/go/delivery/history_records.go b/go/delivery/history_records.go
index 0b49576..6284549 100644
--- a/go/delivery/history_records.go
+++ b/go/delivery/history_records.go
@@ -126,18 +126,23 @@ type BuiltDigest struct {
 	Digest string `json:"digest"`
 }
 
-// BuildLogEntry is one entry of the builder's log: the module, the fingerprint, the source revision, the build node and
-// the time; at the end, the outcome and each artifact's digest.
+// BuildLogEntry is one entry of the builder's log: the module, the fingerprint, the source revision, where the module is
+// built from (its repository, its directory there and the commit), the build node and the time; at the end, the outcome
+// and each artifact's digest. The repository, directory and commit are what the indexer's PathOf, the outside-built
+// registrations and the assigner's running commits read (the lead, 2026-10-29).
 type BuildLogEntry struct {
-	V         int           `json:"v"`
-	Event     string        `json:"event"`
-	Module    string        `json:"module"`
-	FP        string        `json:"fp"`
-	Source    string        `json:"source"`
-	Node      string        `json:"node"`
-	At        time.Time     `json:"at"`
-	Outcome   string        `json:"outcome,omitempty"`
-	Artifacts []BuiltDigest `json:"artifacts,omitempty"`
+	V          int           `json:"v"`
+	Event      string        `json:"event"`
+	Module     string        `json:"module"`
+	FP         string        `json:"fp"`
+	Source     string        `json:"source"`
+	Repository string        `json:"repository"`
+	Directory  string        `json:"directory"`
+	Commit     string        `json:"commit"`
+	Node       string        `json:"node"`
+	At         time.Time     `json:"at"`
+	Outcome    string        `json:"outcome,omitempty"`
+	Artifacts  []BuiltDigest `json:"artifacts,omitempty"`
 }
 
 // EncodeBuildLogEntry is e as JSON at Version; it refuses an entry a reader could not place.
@@ -146,8 +151,8 @@ func EncodeBuildLogEntry(e BuildLogEntry) ([]byte, error) {
 	switch {
 	case e.Event != BuildStartedEvent && e.Event != BuildEndedEvent:
 		return nil, fmt.Errorf("delivery: a build log entry is %s or %s, not %q", BuildStartedEvent, BuildEndedEvent, e.Event)
-	case e.Module == "" || e.FP == "" || e.Node == "" || e.At.IsZero():
-		return nil, fmt.Errorf("delivery: a build log entry names its module, fingerprint, node and time")
+	case e.Module == "" || e.FP == "" || e.Node == "" || e.At.IsZero() || e.Repository == "" || e.Commit == "":
+		return nil, fmt.Errorf("delivery: a build log entry names its module, fingerprint, repository, commit, node and time")
 	case e.Event == BuildEndedEvent && e.Outcome == "":
 		return nil, fmt.Errorf("delivery: a build's end names its outcome")
 	case e.Event == BuildStartedEvent && (e.Outcome != "" || len(e.Artifacts) > 0):