diff --git a/go/catalogue/config.go b/go/catalogue/config.go
index 9341b4b..14f0508 100644
--- a/go/catalogue/config.go
+++ b/go/catalogue/config.go
@@ -114,6 +114,7 @@ type configDeclaration struct {
 	Default     any      `json:"default,omitempty"`
 	Required    bool     `json:"required,omitempty"`
 	Runtime     bool     `json:"runtime,omitempty"`
+	RenamedFrom string   `json:"renamed-from,omitempty"`
 }
 
 // MarshalJSON writes a settings declaration exactly as before, and a config declaration without the settings
@@ -125,7 +126,7 @@ func (d SettingDeclaration) MarshalJSON() ([]byte, error) {
 	}
 	return json.Marshal(configDeclaration{Type: d.Type, Description: d.Description, Enum: d.Enum,
 		Minimum: d.Minimum, Maximum: d.Maximum, Pattern: d.Pattern, Trusted: d.Trusted, Predefined: d.Predefined,
-		Default: d.Default, Required: d.Required, Runtime: d.Runtime})
+		Default: d.Default, Required: d.Required, Runtime: d.Runtime, RenamedFrom: d.RenamedFrom})
 }
 
 // validationProblems is what is wrong with a declaration's validation, and its default against it.
diff --git a/go/catalogue/config_test.go b/go/catalogue/config_test.go
index 338c72a..cc482dc 100644
--- a/go/catalogue/config_test.go
+++ b/go/catalogue/config_test.go
@@ -132,6 +132,32 @@ func TestAConfigManifestIsWrittenBackInItsOwnForm(t *testing.T) {
 	if !bytes.Equal(raw, twice) {
 		t.Fatalf("read again it is written\n%s\nwhere it was\n%s", twice, raw)
 	}
+
+	// The registry milestone's words round-trip the same (design 32): a config value's old name, an artifact's series
+	// and contracts marker, the series a module accepts of a package; absent, a series is 0.1.
+	declared := []byte(`{"module":"c","version":"1","config":{"font":{"type":"string","renamed-from":"font-name"}},
+		"packages":{"mesh-sdk":"0.2"},
+		"build":{"artifacts":[{"name":"go","kind":"package","language":"go","paths":["go"],"series":"0.2",
+			"generated-from":"seats"},{"name":"lib","kind":"package","language":"typescript"}]}}`)
+	m, err = decodeForTest(declared)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if m.Settings["font"].RenamedFrom != "font-name" || m.AcceptedSeries("mesh-sdk") != "0.2" ||
+		m.AcceptedSeries("mesh-contracts") != DefaultSeries || m.Build.Artifacts[0].SeriesOf() != "0.2" ||
+		m.Build.Artifacts[0].GeneratedFrom != "seats" || m.Build.Artifacts[1].SeriesOf() != "0.1" {
+		t.Fatalf("read %+v", m)
+	}
+	raw, _ = json.Marshal(m)
+	for _, said := range []string{`"renamed-from":"font-name"`, `"packages":{"mesh-sdk":"0.2"}`, `"series":"0.2"`,
+		`"generated-from":"seats"`} {
+		if !strings.Contains(string(raw), said) {
+			t.Errorf("written back without %s: %s", said, raw)
+		}
+	}
+	if strings.Count(string(raw), `"series"`) != 1 {
+		t.Errorf("a series nobody said is written: %s", raw)
+	}
 }
 
 // A module in the settings form is written back byte for byte as before.
diff --git a/go/catalogue/manifest.go b/go/catalogue/manifest.go
index 485e190..5aecd73 100644
--- a/go/catalogue/manifest.go
+++ b/go/catalogue/manifest.go
@@ -469,6 +469,11 @@ type Manifest struct {
 	// this is for the rest — `zsh` provides `shell`, `xorg` provides `display-server`.
 	Provides []Offer `json:"provides,omitempty"`
 
+	// Packages are the series of each mesh package this module accepts, by the package's name (novox/hq ADR 0606,
+	// design 32): its fingerprint takes the newest version of that series, and a publish of another series moves it
+	// not. A package it uses and does not name is accepted in DefaultSeries (AcceptedSeries).
+	Packages map[string]string `json:"packages,omitempty"`
+
 	// Requires are names that must be provided by something assigned to the same node.
 	Requires []string `json:"requires,omitempty"`
 	// OptionalRequires is which of Requires the module can run without (novox/hq ADR 0330): filled
@@ -1224,6 +1229,38 @@ type Artifact struct {
 	// paths and constants composed with ${dir:…} and ${port:…} exactly as a container's environment
 	// is, never a secret's content. The node's runtime hands it to this bundle and to no other.
 	Env map[string]string `json:"env,omitempty"`
+
+	// Series is the series this artifact's versions are numbered in, `<major>.<minor>` (novox/hq ADR 0606, design 32):
+	// the builder numbers `<series>.<n>`, so a change of series is a change a user accepts by its own `packages`.
+	// Said on a package, an image, a bundle or an archive; the judge refuses it on any other kind. Absent is
+	// DefaultSeries (SeriesOf).
+	Series string `json:"series,omitempty"`
+
+	// GeneratedFrom marks a package of a contracts module (novox/hq ADR 0608 §5, design 26 *Contracts modules*): the
+	// directory, relative to the module's, of the seat definitions every file of the package is generated from. A
+	// module carrying it holds contracts only and claims no seat, which the judge refuses naming the seat; the build
+	// modules' test step regenerates the package and fails on a file out of step.
+	GeneratedFrom string `json:"generated-from,omitempty"`
+}
+
+// AcceptedSeries is the series of the package of that name this module accepts: the one Packages names, or
+// DefaultSeries.
+func (m Manifest) AcceptedSeries(name string) string {
+	if s := m.Packages[name]; s != "" {
+		return s
+	}
+	return DefaultSeries
+}
+
+// DefaultSeries is the series of an artifact or an accepted package that names none (design 32).
+const DefaultSeries = "0.1"
+
+// SeriesOf is the series the artifact's versions are numbered in: its own, or DefaultSeries.
+func (a Artifact) SeriesOf() string {
+	if a.Series == "" {
+		return DefaultSeries
+	}
+	return a.Series
 }
 
 // Kinds an artifact may be.
diff --git a/go/catalogue/setting_defaults.go b/go/catalogue/setting_defaults.go
index 05f9c46..5180cd8 100644
--- a/go/catalogue/setting_defaults.go
+++ b/go/catalogue/setting_defaults.go
@@ -31,6 +31,11 @@ type SettingDeclaration struct {
 	Required bool `json:"required,omitempty"`
 	// Runtime is a value the module's code reads at runtime rather than one placed in a file (ADR 0348 §5).
 	Runtime bool `json:"runtime,omitempty"`
+	// RenamedFrom is the value's old name, a config value of this module's own (novox/hq ADR 0609 §4, design 32 *A
+	// config value renamed*): on the merge mesh-config moves the value held under it to this name, and answers both
+	// names until every node-engine reports a build reading the new one. The config form only: the judge refuses it
+	// under `settings`, on a secret, and where it changes the value's trust.
+	RenamedFrom string `json:"renamed-from,omitempty"`
 }
 
 // KindPreference is the kind of a setting that may have a default.