diff --git a/api/comms_blasts_test.go b/api/comms_blasts_test.go
index 087b2227..2374fa52 100644
--- a/api/comms_blasts_test.go
+++ b/api/comms_blasts_test.go
@@ -59,11 +59,22 @@ func TestGetNewBlasts(t *testing.T) {
 			},
 			{
 				"track_id":   2,
-				"owner_id":   2,
+				"owner_id":   1,
 				"title":      "Remix Track",
 				"created_at": now.Add(-time.Minute * 10),
 				"updated_at": now.Add(-time.Minute * 10),
 			},
+			{
+				// Owned by user 2 so user 2 qualifies as a remixer of track 1.
+				// Track 2 is now owned by artist1 (so v_usdc_purchases reports
+				// user 1 as the seller for customer_audience filtering), which
+				// previously was what made user 2 a remixer.
+				"track_id":   3,
+				"owner_id":   2,
+				"title":      "Fan Remix",
+				"created_at": now.Add(-time.Minute * 10),
+				"updated_at": now.Add(-time.Minute * 10),
+			},
 		},
 		"follows": {
 			{
@@ -96,6 +107,11 @@ func TestGetNewBlasts(t *testing.T) {
 				"parent_track_id": 1,
 				"child_track_id":  2,
 			},
+			{
+				// Makes user 2 (owner of track 3) a remixer of track 1.
+				"parent_track_id": 1,
+				"child_track_id":  3,
+			},
 		},
 		"sol_purchases": {
 			{"signature": "purchase_sig_123", "instruction_index": 0, "buyer_user_id": 2, "content_type": "track", "content_id": 1, "amount": 1000000, "created_at": now.Add(-time.Hour * 2), "slot": 101, "is_valid": true},
diff --git a/api/v1_users_purchases_download_test.go b/api/v1_users_purchases_download_test.go
index 89ff1ed6..92913749 100644
--- a/api/v1_users_purchases_download_test.go
+++ b/api/v1_users_purchases_download_test.go
@@ -50,7 +50,7 @@ func TestV1UsersPurchasesDownload(t *testing.T) {
 		},
 		// Drives extra_amount = 500000 (amount=1000000 - base_price=50_cents*10000=500000)
 		"track_price_history": []map[string]any{
-			{"track_id": 1, "total_price_cents": 50, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 50, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 	}
 
@@ -163,7 +163,7 @@ func TestV1UsersPurchasesDownloadWithGrantee(t *testing.T) {
 			{"signature": "def", "instruction_index": 0, "route_index": 1, "to_account": app.solanaConfig.StakingBridgeUsdcTokenAccount.String(), "amount": 100000, "slot": 101},
 		},
 		"track_price_history": []map[string]any{
-			{"track_id": 1, "total_price_cents": 50, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 50, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 		"grants": []map[string]any{
 			{
diff --git a/api/v1_users_purchases_test.go b/api/v1_users_purchases_test.go
index dc1f57dd..00bfb0e1 100644
--- a/api/v1_users_purchases_test.go
+++ b/api/v1_users_purchases_test.go
@@ -33,7 +33,7 @@ func TestV1UsersPurchases(t *testing.T) {
 		// For the purchase with non-zero extra_amount (signature "abc"), seed a track_price_history
 		// row so the view's amount - base_price computation produces extra_amount = 1000000.
 		"track_price_history": []map[string]any{
-			{"track_id": 1, "total_price_cents": 0, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 2, 23, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 0, "block_timestamp": time.Date(2024, 6, 2, 23, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 		"sol_purchases": []map[string]any{
 			{
diff --git a/api/v1_users_sales_download_test.go b/api/v1_users_sales_download_test.go
index c144b1ae..18061501 100644
--- a/api/v1_users_sales_download_test.go
+++ b/api/v1_users_sales_download_test.go
@@ -49,7 +49,7 @@ func TestV1UsersSalesDownload(t *testing.T) {
 			{"signature": "def", "instruction_index": 0, "route_index": 1, "to_account": app.solanaConfig.StakingBridgeUsdcTokenAccount.String(), "amount": 100000, "slot": 101},
 		},
 		"track_price_history": []map[string]any{
-			{"track_id": 1, "total_price_cents": 50, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 50, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 		"encrypted_emails": []map[string]any{
 			{
@@ -193,7 +193,7 @@ func TestV1UsersSalesDownloadWithGrantee(t *testing.T) {
 			{"signature": "def", "instruction_index": 0, "route_index": 1, "to_account": app.solanaConfig.StakingBridgeUsdcTokenAccount.String(), "amount": 100000, "slot": 101},
 		},
 		"track_price_history": []map[string]any{
-			{"track_id": 1, "total_price_cents": 50, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 50, "block_timestamp": time.Date(2024, 6, 3, 0, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 		"encrypted_emails": []map[string]any{
 			{
diff --git a/api/v1_users_sales_test.go b/api/v1_users_sales_test.go
index 7c260585..f0cfae2b 100644
--- a/api/v1_users_sales_test.go
+++ b/api/v1_users_sales_test.go
@@ -32,7 +32,7 @@ func TestV1UsersSales(t *testing.T) {
 		},
 		"track_price_history": []map[string]any{
 			// Drives extra_amount = 1000000 for signature "abc" (amount=1000000, base_price=0)
-			{"track_id": 1, "total_price_cents": 0, "blocknumber": 100, "block_timestamp": time.Date(2024, 6, 2, 23, 0, 0, 0, time.UTC), "splits": "[]"},
+			{"track_id": 1, "total_price_cents": 0, "block_timestamp": time.Date(2024, 6, 2, 23, 0, 0, 0, time.UTC), "splits": "[]"},
 		},
 		"sol_purchases": []map[string]any{
 			{"signature": "gfsgf", "instruction_index": 0, "buyer_user_id": 5, "amount": 2000000, "content_type": "playlist", "content_id": 1, "created_at": time.Date(2024, 6, 1, 0, 0, 0, 0, time.UTC), "is_valid": true},