Add sourcify verify

backend/hardhat.config.ts

@@ -1,5 +1,6 @@
 import '@oasisprotocol/sapphire-hardhat'
 import '@nomicfoundation/hardhat-ethers'
+import '@nomicfoundation/hardhat-verify'
 import { promises as fs } from 'fs'
 import path from 'path'
 
@@ -91,6 +92,24 @@ const config: HardhatUserConfig = {
     require: ['ts-node/register/files'],
     timeout: 50_000,
   },
+  sourcify: {
+    enabled: true,
+  },
+  etherscan: {
+    apiKey: {
+      'Oasis Sapphire Testnet': 'abc',
+    },
+    customChains: [
+      {
+        network: 'Oasis Sapphire Testnet',
+        chainId: 23295,
+        urls: {
+          apiURL: 'https://testnet.sapphire.oasis.dev/',
+          browserURL: 'https://explorer.oasis.io/testnet/sapphire',
+        },
+      },
+    ],
+  },
 }
 
 export default config

backend/package.json

@@ -18,14 +18,16 @@
     "build:compile": "hardhat compile --quiet",
     "build": "npm-run-all build:compile",
     "test": "hardhat test",
-    "prepublishOnly": "pnpm build"
+    "prepublishOnly": "pnpm build",
+    "verify": "hardhat verify --network sapphire-testnet 0xdAB5845136b3102E63023BB2A2405cb71608605d '0x8e29375FE5Db7eBb1b5eF24B7D397bBF0B01De09'"
   },
   "dependencies": {
     "@openzeppelin/contracts": "^4.9.5",
     "ethers": "^6.11.1"
   },
   "devDependencies": {
     "@nomicfoundation/hardhat-ethers": "^3.0.5",
+    "@nomicfoundation/hardhat-verify": "^2.0.5",
     "@oasisprotocol/sapphire-contracts": "^0.2.7",
     "@oasisprotocol/sapphire-hardhat": "^2.19.4",
     "@typechain/ethers-v6": "^0.5.1",