From b2d36a860c1988d4ed1b888bd26681d0c18f7366 Mon Sep 17 00:00:00 2001
From: Santiago Palladino <santiago@aztec-labs.com>
Date: Tue, 22 Apr 2025 13:48:32 -0300
Subject: [PATCH] chore: Disable blobscan by default

Disables blobscan as blob archive fallback since its API has not been
reliable enough. We keep it enabled in k8s config for our blobsink
though.
---
 spartan/aztec-network/templates/blob-sink.yaml     |  2 ++
 spartan/aztec-network/values/alpha-testnet.yaml    |  1 +
 yarn-project/blob-sink/src/archive/factory.test.ts | 10 +++++-----
 yarn-project/blob-sink/src/archive/factory.ts      |  6 ------
 4 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/spartan/aztec-network/templates/blob-sink.yaml b/spartan/aztec-network/templates/blob-sink.yaml
index d47642d4ff47..c656a7800062 100644
--- a/spartan/aztec-network/templates/blob-sink.yaml
+++ b/spartan/aztec-network/templates/blob-sink.yaml
@@ -99,6 +99,8 @@ spec:
                   fieldPath: metadata.namespace
             - name: BLOB_SINK_PORT
               value: "{{ .Values.blobSink.service.nodePort }}"
+            - name: BLOB_SINK_ARCHIVE_API_URL
+              value: "{{ .Values.blobSink.archiveApiUrl }}"
             - name: LOG_LEVEL
               value: "{{ .Values.blobSink.logLevel }}"
             - name: LOG_JSON
diff --git a/spartan/aztec-network/values/alpha-testnet.yaml b/spartan/aztec-network/values/alpha-testnet.yaml
index 6a14be97c164..a7ce3b03ff38 100644
--- a/spartan/aztec-network/values/alpha-testnet.yaml
+++ b/spartan/aztec-network/values/alpha-testnet.yaml
@@ -24,6 +24,7 @@ network:
 
 blobSink:
   enabled: true
+  archiveApiUrl: "https://api.sepolia.blobscan.com"
   dataStoreConfig:
     dataDir: "/data"
     storageSize: "128Gi"
diff --git a/yarn-project/blob-sink/src/archive/factory.test.ts b/yarn-project/blob-sink/src/archive/factory.test.ts
index 8cea09f5010c..5150375d7955 100644
--- a/yarn-project/blob-sink/src/archive/factory.test.ts
+++ b/yarn-project/blob-sink/src/archive/factory.test.ts
@@ -2,18 +2,18 @@ import type { BlobSinkArchiveApiConfig } from './config.js';
 import { createBlobArchiveClient } from './factory.js';
 
 describe('BlobscanArchiveClient factory', () => {
-  it.each<[string, BlobSinkArchiveApiConfig, boolean, string]>([
-    ['empty config', {}, false, ''],
-    ['random chain, no custom URL', { l1ChainId: 23478 }, false, ''],
+  it.each<[string, BlobSinkArchiveApiConfig, boolean, string | undefined]>([
+    ['empty config', {}, false, undefined],
+    ['random chain, no custom URL', { l1ChainId: 23478 }, false, undefined],
     [
       'random chain, custom URL',
       { l1ChainId: 23478, archiveApiUrl: 'https://example.com' },
       true,
       'https://example.com/',
     ],
-    ['ETH mainnet default URL', { l1ChainId: 1 }, true, 'https://api.blobscan.com/'],
+    ['ETH mainnet no default URL', { l1ChainId: 1 }, false, undefined],
     ['ETH mainnet custom URL', { l1ChainId: 1, archiveApiUrl: 'https://example.com' }, true, 'https://example.com/'],
-    ['Sepolia default URL', { l1ChainId: 11155111 }, true, 'https://api.sepolia.blobscan.com/'],
+    ['Sepolia no default URL', { l1ChainId: 11155111 }, false, undefined],
     ['Seplia custom URL', { l1ChainId: 11155111, archiveApiUrl: 'https://example.com' }, true, 'https://example.com/'],
   ])('can instantiate a client: %s', (_, cfg, clientExpected, expectedBaseUrl) => {
     const client = createBlobArchiveClient(cfg);
diff --git a/yarn-project/blob-sink/src/archive/factory.ts b/yarn-project/blob-sink/src/archive/factory.ts
index d5816d3542eb..1add277c3e44 100644
--- a/yarn-project/blob-sink/src/archive/factory.ts
+++ b/yarn-project/blob-sink/src/archive/factory.ts
@@ -7,11 +7,5 @@ export function createBlobArchiveClient(config: BlobSinkConfig): BlobArchiveClie
     return new BlobscanArchiveClient(config.archiveApiUrl);
   }
 
-  if (config.l1ChainId === 1) {
-    return new BlobscanArchiveClient('https://api.blobscan.com');
-  } else if (config.l1ChainId === 11155111) {
-    return new BlobscanArchiveClient('https://api.sepolia.blobscan.com');
-  }
-
   return undefined;
 }