update: block verification in parent chain assertion

Gowtham118 · Gowtham118 · commit f127cc1ccf3d · 2025-12-18T19:41:48.000+05:30
- Replaces `NodeCreated` with `AssertionCreated`
- Updates version to use the latest ABI
diff --git a/packages/block-verification-in-parent-chain-assertion/README.md b/packages/block-verification-in-parent-chain-assertion/README.md
@@ -1,12 +1,12 @@
 # Block verification in an assertion posted on the parent chain
 
-This tutorial shows how to verify whether a block of a chain has been processed as part of an RBlock assertion on its parent chain.
+This tutorial shows how to verify whether a block of a chain has been processed as part of an assertion on its parent chain.
 
-It uses the `Rollup` contract to find the latest confirmed (or created if configured in the script) RBlock/node, find the event that created it, and get the latest processed block hash of the child chain that's part of the assertion of that RBlock/node.
+It uses the `Rollup` contract to find the latest confirmed assertion hash, find the `AssertionCreated` event that created it, and get the latest processed block hash of the child chain that's part of that assertion's `afterState`.
 
 Then it checks whether the block number passed as argument was created before the latest block hash of the child chain processed.
 
-See [./exec.js](./scripts/exec.js) for inline explanations.
+See [./exec.ts](./scripts/exec.ts) for inline explanations.
 
 ## Set environment variables
 
diff --git a/packages/block-verification-in-parent-chain-assertion/package.json b/packages/block-verification-in-parent-chain-assertion/package.json
@@ -6,7 +6,7 @@
     "exec": "ts-node scripts/exec.ts"
   },
   "dependencies": {
-    "@arbitrum/sdk": "^v4.0.1",
+    "@arbitrum/sdk": "^v4.0.4",
     "ts-node": "^10.9.2",
     "typescript": "^4.9.5"
   }
diff --git a/packages/block-verification-in-parent-chain-assertion/scripts/exec.ts b/packages/block-verification-in-parent-chain-assertion/scripts/exec.ts
@@ -1,6 +1,6 @@
 import { providers, Contract } from 'ethers';
 import { getArbitrumNetwork } from '@arbitrum/sdk';
-import { RollupCore__factory } from '@arbitrum/sdk/dist/lib/abi/factories/RollupCore__factory';
+import { BoldRollupUserLogic__factory } from '@arbitrum/sdk/dist/lib/abi-bold/factories/BoldRollupUserLogic__factory';
 import { arbLog, requireEnvVariables, addCustomNetworkFromFile } from 'arb-shared-dependencies';
 require('dotenv').config();
 requireEnvVariables(['CHAIN_RPC', 'PARENT_CHAIN_RPC']);
@@ -11,93 +11,64 @@ requireEnvVariables(['CHAIN_RPC', 'PARENT_CHAIN_RPC']);
 const parentChainProvider = new providers.JsonRpcProvider(process.env.PARENT_CHAIN_RPC);
 const childChainProvider = new providers.JsonRpcProvider(process.env.CHAIN_RPC);
 
-/**
- * Use the latest node created instead of the last confirmed one
- */
-const useCreatedNodeInsteadOfConfirmed = false;
-
 const main = async (childChainBlockNumberToVerify: number) => {
   await arbLog(
     'Find whether a block of the child chain has been processed as part of an RBlock on the parent chain',
   );
 
-  /**
-   * Add the custom network configuration to the SDK if present
-   */
   addCustomNetworkFromFile();
 
-  /**
-   * Use childChainNetwork to find the Rollup contract's address and instantiate a contract handler
-   */
   const childChainNetwork = await getArbitrumNetwork(childChainProvider);
   const rollupAddress = childChainNetwork.ethBridge.rollup;
-  const rollup = new Contract(rollupAddress, RollupCore__factory.abi, parentChainProvider);
+  const rollup = new Contract(rollupAddress, BoldRollupUserLogic__factory.abi, parentChainProvider);
   console.log(`Rollup contract found at address ${rollup.address}`);
 
-  /**
-   * Get the latest node created or confirmed
-   */
-  const nodeId = useCreatedNodeInsteadOfConfirmed
-    ? await rollup.latestNodeCreated()
-    : await rollup.latestConfirmed();
-  console.log(
-    `Latest ${useCreatedNodeInsteadOfConfirmed ? 'created' : 'confirmed'} Rblock/node: ${nodeId}`,
-  );
+  const assertionHash: string = await rollup.latestConfirmed();
+  console.log(`Latest confirmed assertion hash: ${assertionHash}`);
 
-  /**
-   * Find the NodeCreated event
-   */
-  const nodeCreatedEventFilter = rollup.filters.NodeCreated(nodeId);
-  const nodeCreatedEvents = await rollup.queryFilter(nodeCreatedEventFilter);
-  if (!nodeCreatedEvents) {
-    throw new Error(`INTERNAL ERROR: NodeCreated events not found for Rblock/node: ${nodeId}`);
+  const assertionCreatedEventFilter = (rollup as any).filters.AssertionCreated(assertionHash);
+  const assertionCreatedEvents = await rollup.queryFilter(assertionCreatedEventFilter);
+  if (!assertionCreatedEvents || assertionCreatedEvents.length === 0) {
+    throw new Error(
+      `INTERNAL ERROR: AssertionCreated events not found for assertion: ${assertionHash}`,
+    );
   }
-  const nodeCreatedEvent = nodeCreatedEvents[0];
-  console.log(`NodeCreated event found in transaction ${nodeCreatedEvent.transactionHash}`);
+  const assertionCreatedEvent = assertionCreatedEvents[0];
+  console.log(
+    `AssertionCreated event found in transaction ${assertionCreatedEvent.transactionHash}`,
+  );
 
-  /**
-   * Finding the assertion within the NodeCreated event, and getting the afterState
-   */
-  if (!nodeCreatedEvent.args) {
+  if (!assertionCreatedEvent.args) {
     throw new Error(
-      `INTERNAL ERROR: NodeCreated event does not have an assertion for Rblock/node: ${nodeId}`,
+      `INTERNAL ERROR: AssertionCreated event does not have an assertion for hash: ${assertionHash}`,
     );
   }
-  const assertion = nodeCreatedEvent.args.assertion;
+  const assertion = (assertionCreatedEvent as any).args.assertion;
   const afterState = assertion.afterState;
 
-  /**
-   * Latest child chain's block hash processed is in the first element of the bytes32Vals property in the globalState
-   */
+  // Latest child chain's block hash processed is in the first element of the bytes32Vals property in the globalState
   const lastChildChainBlockHash = afterState.globalState.bytes32Vals[0];
   console.log(
     `Last block hash of the child chain processed in this Rblock/node: ${lastChildChainBlockHash}`,
   );
 
-  /**
-   * Getting the block number from that block hash
-   */
+  // Getting the block number from that block hash
+
   const lastChildChainBlock = await childChainProvider.getBlock(lastChildChainBlockHash);
   const lastChildChainBlockNumber = lastChildChainBlock.number;
   console.log(
     `Last block number of the child chain processed in this Rblock/node: ${lastChildChainBlockNumber}`,
   );
 
-  /**
-   * Final verification
-   */
+  // Final verification
   console.log(`************`);
   if (lastChildChainBlockNumber > childChainBlockNumberToVerify) {
     console.log(
-      `${childChainBlockNumberToVerify} has been processed as part of the latest ${
-        useCreatedNodeInsteadOfConfirmed ? 'created' : 'confirmed'
-      } RBlock/node`,
+      `${childChainBlockNumberToVerify} has been processed as part of the latest confirmed assertion`,
     );
   } else {
     console.log(
-      `${childChainBlockNumberToVerify} has NOT been processed as part of the latest ${
-        useCreatedNodeInsteadOfConfirmed ? 'created' : 'confirmed'
-      } RBlock/node`,
+      `${childChainBlockNumberToVerify} has NOT been processed as part of the latest confirmed assertion`,
     );
   }
   console.log(`************`);
@@ -106,9 +77,7 @@ const main = async (childChainBlockNumberToVerify: number) => {
 // Getting the transaction hash from the command arguments
 if (process.argv.length < 3) {
   console.log(
-    `Missing block number of the child chain to verify whether it has been processed in the latest ${
-      useCreatedNodeInsteadOfConfirmed ? 'created' : 'confirmed'
-    } RBlock/node`,
+    'Missing block number of the child chain to verify whether it has been processed in the latest confirmed assertion',
   );
   console.log(`Usage: yarn run exec <block number>`);
   process.exit(1);
diff --git a/yarn.lock b/yarn.lock
@@ -34,6 +34,17 @@
     async-mutex "^0.4.0"
     ethers "^5.1.0"
 
+"@arbitrum/sdk@^v4.0.4":
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/@arbitrum/sdk/-/sdk-4.0.4.tgz#32f3cfa75d2b3f9ab0be01eb807112e0001f428d"
+  integrity sha512-GscwlkHYmPzRKs9huDHntbqx1xMRhTraTUvTC9exu+prjndKxHe9ZORuIcqmtEqwLwma/l8nqxI+k+pEEdIO6Q==
+  dependencies:
+    "@ethersproject/address" "^5.0.8"
+    "@ethersproject/bignumber" "^5.1.1"
+    "@ethersproject/bytes" "^5.0.8"
+    async-mutex "^0.4.0"
+    ethers "^5.1.0"
+
 "@arbitrum/token-bridge-contracts@^1.2.3":
   version "1.2.3"
   resolved "https://registry.yarnpkg.com/@arbitrum/token-bridge-contracts/-/token-bridge-contracts-1.2.3.tgz#b08b22b5dcac255149a10bd8b66b0b55be7f3329"

Original file line number	Diff line number	Diff line change
`@@ -6,7 +6,7 @@`
`6`	`6`	`"exec": "ts-node scripts/exec.ts"`
`7`	`7`	`},`
`8`	`8`	`"dependencies": {`
`9`		`- "@arbitrum/sdk": "^v4.0.1",`
	`9`	`+ "@arbitrum/sdk": "^v4.0.4",`
`10`	`10`	`"ts-node": "^10.9.2",`
`11`	`11`	`"typescript": "^4.9.5"`
`12`	`12`	`}`