From 4aa80d12556d04f70f960554e6bf458bc750b018 Mon Sep 17 00:00:00 2001
From: Florent Tapponnier <contact@mobula.io>
Date: Fri, 26 Jun 2026 17:08:18 +0200
Subject: [PATCH] fix(seo): canonical points to /chains/<slug> when provider IS
 a chain

/products/eth-usd, /products/bnb-usd, /products/avalanche-official etc.
resolve to a canonical provider whose slug matches a chain (ethereum,
bnb, avalanche...). The previous canonical /products/<chain> then 308s
to /chains/<chain>, so Ahrefs + GSC flag 'canonical points to redirect'
and Google may split rank instead of consolidating on the final URL.

Now we check the chain registry and short-circuit the canonical (+ OG
url) straight to /chains/<slug> for chain-shaped providers. Non-chain
providers (helius, dRPC, mobula) keep /products/<slug>.
---
 src/app/products/[slug]/page.tsx | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/app/products/[slug]/page.tsx b/src/app/products/[slug]/page.tsx
index 6771b19c..f0333aa2 100644
--- a/src/app/products/[slug]/page.tsx
+++ b/src/app/products/[slug]/page.tsx
@@ -3,6 +3,7 @@ import { notFound } from "next/navigation";
 import Link from "next/link";
 import { ArrowLeft, ArrowUpRight } from "lucide-react";
 import { getProvider } from "@/lib/providers";
+import { CHAIN_BY_SLUG } from "@/lib/chains";
 import { ProviderLogo } from "@/components/provider-logo";
 import { CATEGORY_COLOR } from "@/lib/category-colors";
 import { fmtUnit } from "@/lib/format";
@@ -84,12 +85,20 @@ export async function generateMetadata({
     ? `${reg.description.replace(/[.!?]?$/, ".")} Live performance across ${benchCount} OpenChainBench ${benchWord}${winSuffix}.`
     : fallbackDescription;
 
-  const url = `${SITE.url}/products/${p.slug}`;
+  // When the resolved provider slug is actually a chain (e.g. /products/eth-usd
+  // aliases to /products/ethereum which 308s to /chains/ethereum), point
+  // canonical straight to the final 200 surface. Otherwise Ahrefs + GSC
+  // flag "canonical points to redirect" and Google may split rank between
+  // source + final instead of consolidating.
+  const isChain = CHAIN_BY_SLUG.has(p.slug);
+  const canonicalUrl = isChain
+    ? `${SITE.url}/chains/${p.slug}`
+    : `${SITE.url}/products/${p.slug}`;
   return {
     title,
     description,
-    alternates: { canonical: url },
-    openGraph: { title, description, type: "profile", url },
+    alternates: { canonical: canonicalUrl },
+    openGraph: { title, description, type: "profile", url: canonicalUrl },
     twitter: { card: "summary_large_image", title, description },
   };
 }