diff --git a/packages/core/src/rpc/substrate/chain.ts b/packages/core/src/rpc/substrate/chain.ts
index 2a9d6428..41f3436c 100644
--- a/packages/core/src/rpc/substrate/chain.ts
+++ b/packages/core/src/rpc/substrate/chain.ts
@@ -1,5 +1,6 @@
 import { Header as CodecHeader } from '@polkadot/types/interfaces'
 import { HexString } from '@polkadot/util/types'
+import { hexToNumber, isHex } from '@polkadot/util'
 
 import { Handler, ResponseError } from '../shared.js'
 import type { Header } from '../../index.js'
@@ -22,14 +23,14 @@ const processHeader = ({ parentHash, number, stateRoot, extrinsicsRoot, digest }
  *
  * @return Block hash | hash[] | null
  */
-export const chain_getBlockHash: Handler<[number | number[] | null], HexString | (HexString | null)[] | null> = async (
-  context,
-  [blockNumber],
-) => {
+export const chain_getBlockHash: Handler<
+  [number | HexString | number[] | HexString[] | null],
+  HexString | (HexString | null)[] | null
+> = async (context, [blockNumber]) => {
   const numbers = Array.isArray(blockNumber) ? blockNumber : [blockNumber]
-  const hashes = await Promise.all(numbers.map((n) => context.chain.getBlockAt(n))).then((blocks) =>
-    blocks.map((b) => b?.hash || null),
-  )
+  const hashes = await Promise.all(
+    numbers.map((n) => (isHex(n) ? hexToNumber(n) : n)).map((n) => context.chain.getBlockAt(n)),
+  ).then((blocks) => blocks.map((b) => b?.hash || null))
   return Array.isArray(blockNumber) ? hashes : hashes[0]
 }
 
diff --git a/packages/e2e/src/chain.test.ts b/packages/e2e/src/chain.test.ts
index afd487ba..8ce8cbd8 100644
--- a/packages/e2e/src/chain.test.ts
+++ b/packages/e2e/src/chain.test.ts
@@ -23,6 +23,9 @@ describe('chain rpc', () => {
     expect(await api.rpc('chain_getBlockHash', [0, undefined, null])).toEqual(
       expect.arrayContaining([hash0, hashHead, hashHead]),
     )
+    expect(await api.rpc('chain_getBlockHash', '0x03e8')).toEqual(hash1000)
+    expect(await api.rpc('chain_getBlockHash', ['0x03e8'])).toEqual(expect.arrayContaining([hash1000]))
+    expect(await api.rpc('chain_getBlockHash', ['0x03e8', null])).toEqual(expect.arrayContaining([hash1000, hashHead]))
 
     await check(api.rpc.chain.getHeader()).toMatchSnapshot()
     await check(api.rpc.chain.getHeader(hashHead)).toMatchSnapshot()
diff --git a/packages/e2e/src/migration.test.ts b/packages/e2e/src/migration.test.ts
index 9f7a3359..7cef979c 100644
--- a/packages/e2e/src/migration.test.ts
+++ b/packages/e2e/src/migration.test.ts
@@ -7,7 +7,7 @@ describe('Migration', async () => {
   const { api, dev, teardown } = await setupContext({
     wasmOverride: new URL('../blobs/shibuya-118.wasm', import.meta.url).pathname,
     blockNumber: 5335600,
-    endpoint: 'wss://shibuya-rpc.dwellir.com',
+    endpoint: ['wss://shibuya-rpc.dwellir.com', 'wss://rpc.shibuya.astar.network'],
     db: !process.env.RUN_TESTS_WITHOUT_DB ? 'e2e-tests-db.sqlite' : undefined,
     timeout: 400_000,
   })