fetch cbbtc wallets from api

Author: noateden

projects/coinbase-btc/index.js

@@ -1,12 +1,44 @@
 const sdk = require('@defillama/sdk');
-const { sumTokensExport } = require('../helper/sumTokens');
+const { sumTokens } = require('../helper/chain/bitcoin.js');
 const bitcoinAddressBook = require('../helper/bitcoin-book/index.js')
 
+async function tvl() {
+  const response = await fetch("https://www.coinbase.com/cbbtc/proof-of-reserves.json", {
+    "headers": {
+      "accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8",
+      "accept-language": "en-US,en;q=0.5",
+      "cache-control": "no-cache",
+      "pragma": "no-cache",
+      "priority": "u=0, i",
+      "sec-ch-ua": "\"Not)A;Brand\";v=\"8\", \"Chromium\";v=\"138\", \"Brave\";v=\"138\"",
+      "sec-ch-ua-arch": "\"x86\"",
+      "sec-ch-ua-bitness": "\"64\"",
+      "sec-ch-ua-full-version-list": "\"Not)A;Brand\";v=\"8.0.0.0\", \"Chromium\";v=\"138.0.0.0\", \"Brave\";v=\"138.0.0.0\"",
+      "sec-ch-ua-mobile": "?0",
+      "sec-ch-ua-model": "\"\"",
+      "sec-ch-ua-platform": "\"Linux\"",
+      "sec-ch-ua-platform-version": "\"6.2.0\"",
+      "sec-fetch-dest": "document",
+      "sec-fetch-mode": "navigate",
+      "sec-fetch-site": "none",
+      "sec-fetch-user": "?1",
+      "sec-gpc": "1",
+      "upgrade-insecure-requests": "1",
+    },
+    "body": null,
+    "method": "GET"
+  });
+
+  const res = await response.json();
+
+  const bitcoinWallets = res.reserveAddresses.map(item => item.address)
+
+  return sumTokens({ owners: bitcoinWallets })
+}
+
 module.exports = {
   methodology: "BTC collateral backing CBBTC. https://www.coinbase.com/cbbtc/proof-of-reserves",
   bitcoin: {
-    tvl: sdk.util.sumChainTvls([
-      sumTokensExport({ owners: bitcoinAddressBook.coinbasebtc }),
-    ]),
+    tvl,
   },
 };