chore(backend): deploy to sepolia

backend/README.md

@@ -27,6 +27,11 @@ npx hardhat ignition deploy ./ignition/modules/QueueHandler.ts --network hardhat
 ```
 
 Ethereum Sepolia (Chain ID `11155111`)
+
+```shell
+rm -rf ./ignition/deployments/chain-11155111/artifacts/
+```
+
 ```shell
 npx hardhat ignition deploy ./ignition/modules/SponsorshipQueue.ts --network sepolia --reset --verify
 npx hardhat ignition deploy ./ignition/modules/DistributionQueue.ts --network sepolia --verify
@@ -36,6 +41,11 @@ npx hardhat ignition deploy ./ignition/modules/QueueHandler.ts --network sepolia
 [`./ignition/deployments/chain-11155111/deployed_addresses.json`](./ignition/deployments/chain-11155111/deployed_addresses.json)
 
 Ethereum Mainnet (Chain ID `1`)
+
+```shell
+rm -rf ./ignition/deployments/chain-1/artifacts/
+```
+
 ```shell
 npx hardhat ignition deploy ./ignition/modules/SponsorshipQueue.ts --network mainnet --reset --verify
 npx hardhat ignition deploy ./ignition/modules/DistributionQueue.ts --network mainnet --verify

backend/hardhat.config.ts

@@ -20,11 +20,11 @@ const config: HardhatUserConfig = {
   },
   networks: {
     sepolia: { // Chain ID 11155111
-      url: "https://sepolia.drpc.org",
+      url: "https://0xrpc.io/sep",
       accounts: privateKeys
     },
     mainnet: { // Chain ID 1
-      url: "https://eth.drpc.org",
+      url: "https://0xrpc.io/eth",
       accounts: privateKeys
     }
   },

backend/ignition/deployments/chain-11155111/deployed_addresses.json

@@ -1,5 +1,6 @@
 {
-  "SponsorshipQueueModule#SponsorshipQueue": "0xDd2A7CAF07E9ebf7560E524454607f0270348ecf",
-  "DistributionQueueModule#DistributionQueue": "0x3bd4EFE520FFE291B36C5bDE3c34028A0CFe9513",
-  "DistributionVerifierModule#DistributionVerifier": "0xf09f4cadbB3CFDFd92B1717853ccFBAe3B57B73B"
+  "SponsorshipQueueModule#SponsorshipQueue": "0x646A5550af30f5340AF218C9aE375A4C7Bb740BF",
+  "DistributionQueueModule#DistributionQueue": "0xD7744d3Cc62748fcDc8f53e202C804488D9e85A8",
+  "DistributionVerifierModule#DistributionVerifier": "0xC3313d6BB50C081AE07B6B097700eC2ED0568377",
+  "QueueHandlerModule#QueueHandler": "0x0B96769D277D8b7EaED38d2e269101615fB3e237"
 }