diff --git a/packages/core/src/reviews/aggregate.test.ts b/packages/core/src/reviews/aggregate.test.ts
index f70b484..77bf6d3 100644
--- a/packages/core/src/reviews/aggregate.test.ts
+++ b/packages/core/src/reviews/aggregate.test.ts
@@ -29,12 +29,21 @@ const D_A = "5fe928ae0970844f3c5253d2e85a88788486edcbd96c070334a4a2d0d0154a77";
 const D_B = "0".repeat(63) + "1";
 
 function makeReview(over: Partial<ReviewRow> & { d?: string } = {}): ReviewRow {
+  const pubkey = over.pubkey ?? `pk${Math.random().toString(36).slice(2, 10)}${"0".repeat(50)}`;
+  const d = over.d ?? D_A;
+  const kind = 38000 as const;
+  // `k` defaults to Cashu (38172) — tests in this file don't differentiate
+  // Cashu vs Fedimint; parse-level `k` handling is covered in parse.test.ts.
+  // `a` is derived from kind/pubkey/d per NIP-87's `<kind>:<pubkey>:<d>`.
+  const k = over.k ?? 38172;
   return {
-    pubkey: `pk${Math.random().toString(36).slice(2, 10)}${"0".repeat(50)}`,
-    kind: 38000,
-    d: over.d ?? D_A,
+    pubkey,
+    kind,
+    d,
     eventId: `${"0".repeat(58)}${Math.random().toString(36).slice(2, 8)}`,
     createdAt: 1_700_000_000,
+    k,
+    a: `${kind}:${pubkey}:${d}`,
     content: "",
     rawTags: [],
     rating: 5,
diff --git a/packages/core/src/reviews/rank.test.ts b/packages/core/src/reviews/rank.test.ts
index 192b908..2a76175 100644
--- a/packages/core/src/reviews/rank.test.ts
+++ b/packages/core/src/reviews/rank.test.ts
@@ -34,10 +34,16 @@ function dForIndex(n: number): string {
 }
 
 function makeReview(over: Partial<ReviewRow> & { pubkey: string; d: string }): ReviewRow {
+  const kind = 38000 as const;
+  // `k` defaults to Cashu (38172); rank.test only exercises sort order,
+  // which is `k`-agnostic. `a` is derived per NIP-87 `<kind>:<pubkey>:<d>`.
+  const k = over.k ?? 38172;
   return {
-    kind: 38000,
+    kind,
     eventId: `${"0".repeat(58)}${over.pubkey.slice(-6)}`,
     createdAt: 1_700_000_000,
+    k,
+    a: `${kind}:${over.pubkey}:${over.d}`,
     content: "",
     rawTags: [],
     rating: 5,
diff --git a/packages/core/src/reviews/upsert.test.ts b/packages/core/src/reviews/upsert.test.ts
index 8a167d2..2ad15b8 100644
--- a/packages/core/src/reviews/upsert.test.ts
+++ b/packages/core/src/reviews/upsert.test.ts
@@ -42,12 +42,20 @@ const EID_LOW = `${"0".repeat(60)}aaaa`;
 const EID_HIGH = `${"0".repeat(60)}ffff`;
 
 function makeReview(over: Partial<ReviewRow> = {}): ReviewRow {
+  const pubkey = over.pubkey ?? `pk${"0".repeat(60)}1`;
+  const d = over.d ?? D_VALID;
+  const kind = 38000 as const;
+  // `k` defaults to Cashu (38172); one test below overrides to 38173 for the
+  // Fedimint path. `a` is derived per NIP-87 `<kind>:<pubkey>:<d>`.
+  const k = over.k ?? 38172;
   return {
-    pubkey: `pk${"0".repeat(60)}1`,
-    kind: 38000,
-    d: D_VALID,
+    pubkey,
+    kind,
+    d,
     eventId: EID_LOW,
     createdAt: 1_700_000_000,
+    k,
+    a: `${kind}:${pubkey}:${d}`,
     content: "",
     rawTags: [],
     rating: 5,