diff --git a/.pnp.cjs b/.pnp.cjs
index afb7e12..8c85360 100755
--- a/.pnp.cjs
+++ b/.pnp.cjs
@@ -36,6 +36,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
             ["@next/eslint-plugin-next", "npm:13.0.5"],\
             ["@sentry/nextjs", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:7.27.0"],\
             ["@svgr/webpack", "npm:6.5.1"],\
+            ["@types/cors", "npm:2.8.13"],\
             ["@types/eslint", "npm:8.4.10"],\
             ["@types/node", "npm:18.11.9"],\
             ["@types/react", "npm:18.0.25"],\
@@ -47,6 +48,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
             ["@typescript-eslint/parser", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:5.45.0"],\
             ["axios", "npm:0.27.2"],\
             ["buffer", "npm:6.0.3"],\
+            ["cors", "npm:2.8.5"],\
             ["crypto", "npm:1.0.1"],\
             ["eslint", "npm:8.28.0"],\
             ["eslint-config-next", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:13.0.5"],\
@@ -3957,6 +3959,16 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
           "linkType": "HARD"\
         }]\
       ]],\
+      ["@types/cors", [\
+        ["npm:2.8.13", {\
+          "packageLocation": "./.yarn/cache/@types-cors-npm-2.8.13-4b8ac1068f-7ef197ea19.zip/node_modules/@types/cors/",\
+          "packageDependencies": [\
+            ["@types/cors", "npm:2.8.13"],\
+            ["@types/node", "npm:18.11.9"]\
+          ],\
+          "linkType": "HARD"\
+        }]\
+      ]],\
       ["@types/eslint", [\
         ["npm:8.4.10", {\
           "packageLocation": "./.yarn/cache/@types-eslint-npm-8.4.10-9df5f4bc78-21e009ed9e.zip/node_modules/@types/eslint/",\
@@ -5466,6 +5478,17 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
           "linkType": "HARD"\
         }]\
       ]],\
+      ["cors", [\
+        ["npm:2.8.5", {\
+          "packageLocation": "./.yarn/cache/cors-npm-2.8.5-c9935a2d12-ced838404c.zip/node_modules/cors/",\
+          "packageDependencies": [\
+            ["cors", "npm:2.8.5"],\
+            ["object-assign", "npm:4.1.1"],\
+            ["vary", "npm:1.1.2"]\
+          ],\
+          "linkType": "HARD"\
+        }]\
+      ]],\
       ["cosmiconfig", [\
         ["npm:7.1.0", {\
           "packageLocation": "./.yarn/cache/cosmiconfig-npm-7.1.0-13a5090bcd-c53bf7befc.zip/node_modules/cosmiconfig/",\
@@ -7291,6 +7314,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
             ["@next/eslint-plugin-next", "npm:13.0.5"],\
             ["@sentry/nextjs", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:7.27.0"],\
             ["@svgr/webpack", "npm:6.5.1"],\
+            ["@types/cors", "npm:2.8.13"],\
             ["@types/eslint", "npm:8.4.10"],\
             ["@types/node", "npm:18.11.9"],\
             ["@types/react", "npm:18.0.25"],\
@@ -7302,6 +7326,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
             ["@typescript-eslint/parser", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:5.45.0"],\
             ["axios", "npm:0.27.2"],\
             ["buffer", "npm:6.0.3"],\
+            ["cors", "npm:2.8.5"],\
             ["crypto", "npm:1.0.1"],\
             ["eslint", "npm:8.28.0"],\
             ["eslint-config-next", "virtual:4b77e00d446246df1ed27001550885fbf1b51be18c660c1b5c357d3d763078ecef2a676194291a120f149b87573081e5af0621dc83cf1f83383639f39ac133c7#npm:13.0.5"],\
@@ -10550,6 +10575,15 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
           "linkType": "HARD"\
         }]\
       ]],\
+      ["vary", [\
+        ["npm:1.1.2", {\
+          "packageLocation": "./.yarn/cache/vary-npm-1.1.2-b49f70ae63-ae0123222c.zip/node_modules/vary/",\
+          "packageDependencies": [\
+            ["vary", "npm:1.1.2"]\
+          ],\
+          "linkType": "HARD"\
+        }]\
+      ]],\
       ["warning", [\
         ["npm:4.0.3", {\
           "packageLocation": "./.yarn/cache/warning-npm-4.0.3-291e921d6d-4f2cb6a957.zip/node_modules/warning/",\
diff --git a/.yarn/cache/@types-cors-npm-2.8.13-4b8ac1068f-7ef197ea19.zip b/.yarn/cache/@types-cors-npm-2.8.13-4b8ac1068f-7ef197ea19.zip
new file mode 100644
index 0000000..8c75a92
Binary files /dev/null and b/.yarn/cache/@types-cors-npm-2.8.13-4b8ac1068f-7ef197ea19.zip differ
diff --git a/.yarn/cache/cors-npm-2.8.5-c9935a2d12-ced838404c.zip b/.yarn/cache/cors-npm-2.8.5-c9935a2d12-ced838404c.zip
new file mode 100644
index 0000000..b7ab2c5
Binary files /dev/null and b/.yarn/cache/cors-npm-2.8.5-c9935a2d12-ced838404c.zip differ
diff --git a/.yarn/cache/vary-npm-1.1.2-b49f70ae63-ae0123222c.zip b/.yarn/cache/vary-npm-1.1.2-b49f70ae63-ae0123222c.zip
new file mode 100644
index 0000000..6ef0831
Binary files /dev/null and b/.yarn/cache/vary-npm-1.1.2-b49f70ae63-ae0123222c.zip differ
diff --git a/package.json b/package.json
index 01ae06a..1eb0bbd 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "@sentry/nextjs": "^7.27.0",
     "axios": "^0.27.2",
     "buffer": "^6.0.3",
+    "cors": "^2.8.5",
     "crypto": "^1.0.1",
     "iron-session": "^6.3.1",
     "next": "13.0.5",
@@ -33,6 +34,7 @@
   "devDependencies": {
     "@next/eslint-plugin-next": "^13.0.5",
     "@svgr/webpack": "^6.5.1",
+    "@types/cors": "^2",
     "@types/eslint": "^8.4.10",
     "@types/node": "18.11.9",
     "@types/react": "18.0.25",
diff --git a/pages/api/allowlist.ts b/pages/api/allowlist.ts
new file mode 100644
index 0000000..f211b2c
--- /dev/null
+++ b/pages/api/allowlist.ts
@@ -0,0 +1,23 @@
+import type { NextApiRequest, NextApiResponse } from "next";
+import { CHAIN_ALLOWLIST } from "../../constants/icns";
+import Cors from "cors";
+
+const cors = Cors({
+  methods: ["GET"],
+});
+
+export default async function (req: NextApiRequest, res: NextApiResponse) {
+  await new Promise((resolve, reject) => {
+    cors(req, res, (result: any) => {
+      if (result instanceof Error) {
+        return reject(result);
+      }
+
+      return resolve(result);
+    });
+  });
+
+  res.status(200).json({
+    chains: CHAIN_ALLOWLIST,
+  });
+}
diff --git a/yarn.lock b/yarn.lock
index 2efc204..8c7caa2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2527,6 +2527,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/cors@npm:^2":
+  version: 2.8.13
+  resolution: "@types/cors@npm:2.8.13"
+  dependencies:
+    "@types/node": "*"
+  checksum: 7ef197ea19d2e5bf1313b8416baa6f3fd6dd887fd70191da1f804f557395357dafd8bc8bed0ac60686923406489262a7c8a525b55748f7b2b8afa686700de907
+  languageName: node
+  linkType: hard
+
 "@types/eslint@npm:^8.4.10":
   version: 8.4.10
   resolution: "@types/eslint@npm:8.4.10"
@@ -3741,6 +3750,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cors@npm:^2.8.5":
+  version: 2.8.5
+  resolution: "cors@npm:2.8.5"
+  dependencies:
+    object-assign: ^4
+    vary: ^1
+  checksum: ced838404ccd184f61ab4fdc5847035b681c90db7ac17e428f3d81d69e2989d2b680cc254da0e2554f5ed4f8a341820a1ce3d1c16b499f6e2f47a1b9b07b5006
+  languageName: node
+  linkType: hard
+
 "cosmiconfig@npm:^7.0.1":
   version: 7.1.0
   resolution: "cosmiconfig@npm:7.1.0"
@@ -5196,6 +5215,7 @@ __metadata:
     "@next/eslint-plugin-next": ^13.0.5
     "@sentry/nextjs": ^7.27.0
     "@svgr/webpack": ^6.5.1
+    "@types/cors": ^2
     "@types/eslint": ^8.4.10
     "@types/node": 18.11.9
     "@types/react": 18.0.25
@@ -5207,6 +5227,7 @@ __metadata:
     "@typescript-eslint/parser": ^5.45.0
     axios: ^0.27.2
     buffer: ^6.0.3
+    cors: ^2.8.5
     crypto: ^1.0.1
     eslint: 8.28.0
     eslint-config-next: 13.0.5
@@ -6411,7 +6432,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"object-assign@npm:^4.0.1, object-assign@npm:^4.1.0, object-assign@npm:^4.1.1":
+"object-assign@npm:^4, object-assign@npm:^4.0.1, object-assign@npm:^4.1.0, object-assign@npm:^4.1.1":
   version: 4.1.1
   resolution: "object-assign@npm:4.1.1"
   checksum: fcc6e4ea8c7fe48abfbb552578b1c53e0d194086e2e6bbbf59e0a536381a292f39943c6e9628af05b5528aa5e3318bb30d6b2e53cadaf5b8fe9e12c4b69af23f
@@ -8047,6 +8068,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"vary@npm:^1":
+  version: 1.1.2
+  resolution: "vary@npm:1.1.2"
+  checksum: ae0123222c6df65b437669d63dfa8c36cee20a504101b2fcd97b8bf76f91259c17f9f2b4d70a1e3c6bbcee7f51b28392833adb6b2770b23b01abec84e369660b
+  languageName: node
+  linkType: hard
+
 "warning@npm:^4.0.3":
   version: 4.0.3
   resolution: "warning@npm:4.0.3"