Merge pull request #244 from jonathansmirnoff/feat/add-xusd

Add XUSD

src/adapters/peggedAssets/xusd/index.ts

@@ -0,0 +1,56 @@
+const sdk = require("@defillama/sdk");
+import { sumSingleBalance } from "../helper/generalUtil";
+import {
+  ChainBlocks,
+  PeggedIssuanceAdapter,
+  Balances,
+} from "../peggedAsset.type";
+
+type ChainContracts = {
+  [chain: string]: {
+    [contract: string]: string[];
+  };
+};
+
+const chainContracts: ChainContracts = {
+  rsk: {
+    issued: ["0xb5999795be0ebb5bab23144aa5fd6a02d080299f"],
+  }  
+};
+
+async function chainMinted(chain: string, decimals: number) {
+  return async function (
+    _timestamp: number,
+    _ethBlock: number,
+    _chainBlocks: ChainBlocks
+  ) {
+    let balances = {} as Balances;
+    for (let issued of chainContracts[chain].issued) {
+      const totalSupply = (
+        await sdk.api.abi.call({
+          abi: "erc20:totalSupply",
+          target: issued,
+          block: _chainBlocks?.[chain],
+          chain: chain,
+        })
+      ).output;
+      sumSingleBalance(
+        balances,
+        "peggedUSD",
+        totalSupply / 10 ** decimals,
+        "issued",
+        false
+      );
+    }
+    return balances;
+  };
+}
+
+const adapter: PeggedIssuanceAdapter = {
+  rsk: {
+    minted: chainMinted("rsk", 18),
+    unreleased: async () => ({}),
+  }  
+};
+
+export default adapter;

src/peggedData/peggedData.ts

@@ -3243,4 +3243,24 @@ export default [
     twitter: "https://twitter.com/Quantoz",
     wiki: null,
   },
+  {
+    id: "162",
+    name: "XUSD",
+    address: "rsk:0xb5999795be0ebb5bab23144aa5fd6a02d080299f",
+    symbol: "XUSD",
+    url: "https://wiki.sovryn.com/en/technical-documents/xusd-overview",
+    description:
+      "XUSD is a USD-pegged stablecoin aggregator of the Babelfish protocol",
+    mintRedeemDescription:
+      "Its purpose is to act as a trustless stablecoin translation device - meaning it facilitates the conversion of multiple USD-pegged stablecoins with each other at a fixed 1:1 ratio.",
+    onCoinGecko: false,
+    gecko_id: "", 
+    cmcId: "",
+    pegType: "peggedUSD",
+    pegMechanism: "crypto-backed",
+    priceSource: "defillama",
+    auditLinks: null,
+    twitter: "https://twitter.com/SovrynBTC",
+    wiki: null
+  }
 ] as PeggedAsset[];