simplifies verifyMetadata sample

updates dependencies

Signed-off-by: stadolf <stadolf@gmail.com>

package.json

@@ -1,19 +1,18 @@
 {
-  "name": "boo",
+  "name": "ipnft-samples",
   "version": "1.0.0",
   "main": "index.js",
   "license": "MIT",
   "dependencies": {
     "ajv": "^8.12.0",
     "ajv-formats": "^2.1.1",
-    "dotenv": "^16.0.3",
-    "multiformats": "^11.0.0",
-    "node-fetch": "^3.3.0",
+    "dotenv": "^16.3.1",
+    "multiformats": "^12.0.1",
     "ts-node": "^10.9.1",
-    "typescript": "^4.9.4",
-    "web3.storage": "^4.4.0"
+    "typescript": "^4.9.5",
+    "web3.storage": "^4.5.5"
   },
   "devDependencies": {
-    "@types/node": "^18.11.18"
+    "@types/node": "^18.16.0"
   }
 }

verifyMetadata.mts

@@ -1,37 +1,25 @@
+/// <reference lib="dom" />
 import dotenv from "dotenv";
-import { Web3Storage } from "web3.storage";
-import fetch from "node-fetch";
 import Ajv from "ajv";
 import addFormats from "ajv-formats";
 dotenv.config();
 
-const w3sClient = new Web3Storage({ token: process.env.W3S_TOKEN as string });
+//https://testnets.opensea.io/assets/goerli/0xaf7358576C9F7cD84696D28702fC5ADe33cce0e9/73
+const ipnftMetadataUri =
+  "ipfs://bafkreicnc6ilzauc5e5dhyakk3e6bx3gsre7qtp4nq3b3utjv4fr4oa5f4";
 
-//https://w3s.link/ipfs/bafybeifyciqacag3wev63lspuvxs3e6fe3n6mt4rwharttxgwpkcq6f5z4/ipnft.schema.json
-const ipnftSchema001Cid =
-  "bafkreidvntjwclitnjnk25qe6gcjxqgjthfm5ilx7rsotrnh2k2tooeara";
-
-//https://testnets.opensea.io/assets/goerli/0x36444254795ce6E748cf0317EEE4c4271325D92A/10
-const ipnftMetadataArLink = "ar://adXUYrXpfRb6JCYZVrXWxqH3v7zeB25geQvC9e6rmN0";
-
-async function retrieveFromIpfs(cid: string): Promise<string> {
-  const res = await w3sClient.get(cid);
-  for await (const entry of res!.unixFsIterator()) {
-    for await (const chunk of entry.content()) {
-      return new TextDecoder().decode(chunk);
-    }
-  }
-  throw "not found";
-}
-
-async function retrieveFromArweave(arLink: string) {
-  const arGatewayUrl = arLink.replace("ar://", "https://arweave.net/");
-  return await (await fetch(arGatewayUrl)).json();
+async function retrieveFromIpfs(ipfsLink: string): Promise<any> {
+  const ipfsGatewayUrl = ipfsLink.replace("ipfs://", "https://ipfs.io/ipfs/");
+  const content = await fetch(ipfsGatewayUrl);
+  return content.json();
 }
 
 (async () => {
-  const ipnftSchema = JSON.parse(await retrieveFromIpfs(ipnftSchema001Cid));
-  const document = await retrieveFromArweave(ipnftMetadataArLink);
+  const ipnftSchema = await retrieveFromIpfs(
+    "ipfs://bafybeihvql52zxnkksedcad5i6ptimpquu4oiek56ojldkm3ndkfoevmf4/ipnft.schema.json"
+  );
+
+  const document = await retrieveFromIpfs(ipnftMetadataUri);
 
   const ajv = new Ajv();
   addFormats(ajv);