Revert "Revert "add ck aggregator"" (#11694)

projects/chain-fusion/index.js

@@ -0,0 +1,27 @@
+const { sumTokens2, } = require("../helper/unwrapLPs");
+const { get } = require('../helper/http')
+
+// This address holds all the locked ETH as well as locked ERC20 tokens
+const ethereum_contract = "0xb25eA1D493B49a1DeD42aC5B1208cC618f9A9B80";
+
+async function ethereum_tvl(api) {
+  return sumTokens2({  owner: ethereum_contract, api, fetchCoValentTokens: true  });
+}
+
+async function bitcoin_tvl(ts) {
+  var end = ts.timestamp
+  let start = end - 24 * 60 * 60;
+  const { data } = await get(`https://icrc-api.internetcomputer.org/api/v1/ledgers/mxzaz-hqaaa-aaaar-qaada-cai/total-supply?start=${start}&end=${end}&step=1`);
+  let [_, bal] = data.pop()
+  return {
+    'coingecko:bitcoin': bal / 1e8
+  };
+}
+
+module.exports = {
+  methodology: `We count the ETH and ERC20-Tokens on ${ethereum_contract} as the collateral for ckETH and ck-ERC20 tokens and we count BTC as the collateral for ckBTC`,
+  ethereum: {
+    tvl: ethereum_tvl,
+  },
+  bitcoin: { tvl: bitcoin_tvl },
+};