diff --git a/src/api.ts b/src/api.ts
index fb11d2d9..71ca04bb 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -1332,7 +1332,6 @@ export default class API extends EventEmitter {
     delete zktx.signature
 
     const result = await verifyMessage ({
-      provider: this.ETHERS_PROVIDERS[chainId] as ethers.providers.Provider,
       signer: zktx.user,
       typedData: {
         domain: networkProviderConfig.domain,
@@ -1480,7 +1479,6 @@ export default class API extends EventEmitter {
       if (signerAddress !== userId) throw new Error('Unauthorized')
     } else {
       const res = await verifyMessage({
-        provider: this.ETHERS_PROVIDERS[chainId] as ethers.providers.Provider,
         signer: userId as string,
         message: `cancelall2:${chainId}:${validUntil}`,
         signature
@@ -1599,8 +1597,7 @@ export default class API extends EventEmitter {
       signerAddress = res.result.accountId.toString()
       if (signerAddress !== select.rows[0].userid) throw new Error('Unauthorized')
     } else {
-      const res = await verifyMessage({
-        provider: this.ETHERS_PROVIDERS[chainId] as ethers.providers.Provider,
+      const res = await verifyMessage({verifyMessage
         signer: select.rows[0].userid as string,
         message: `cancelorder2:${chainId}:${orderId}`,
         signature
diff --git a/src/cryptography.ts b/src/cryptography.ts
index 50f03f52..367459f7 100644
--- a/src/cryptography.ts
+++ b/src/cryptography.ts
@@ -1,10 +1,8 @@
 import { ethers } from 'ethers'
 import type { AnyObject } from './types'
-import { redis, publisher } from './redisClient'
+import { redis } from './redisClient'
 
-const VALIDATOR_1271_ABI = [
-  'function isValidSignature(bytes32 hash, bytes signature) view returns (bytes4)'
-]
+const VALIDATOR_1271_ABI = ['function isValidSignature(bytes32 hash, bytes signature) view returns (bytes4)']
 
 export function getEvmEIP712Types(chainId: number) {
   if ([42161, 421613].includes(chainId)) {
@@ -46,6 +44,7 @@ function addrMatching(recoveredAddr: string, targetAddr: string) {
   return recoveredAddr.toLowerCase() === targetAddr.toLowerCase()
 }
 
+/*
 // EIP 1271 check
 async function eip1271Check(
   provider: ethers.providers.Provider,
@@ -70,16 +69,16 @@ async function eip1271Check(
   }
   return false
 }
+*/
 
 // you only need to pass one of: typedData or message
 export async function verifyMessage(param: {
-  provider: ethers.providers.Provider
   signer: string
   message?: string
   typedData?: AnyObject
   signature: string
 }): Promise<boolean> {
-  const { message, typedData, provider, signer } = param
+  const { message, typedData, signer } = param
   const signature = modifyOldSignature(param.signature)
   let finalDigest: string
 
@@ -108,9 +107,9 @@ export async function verifyMessage(param: {
 
   // 2nd try: Check registered vault address
   // Requires manual whitelist
-  const vaultSigner = await redis.get(`vaultsigner:${signer.toLowerCase()}`);
+  const vaultSigner = await redis.get(`vaultsigner:${signer.toLowerCase()}`)
   if (vaultSigner && addrMatching(recoveredAddress, vaultSigner)) return true
-  console.log(`Expected ${signer}, recovered ${recoveredAddress}`);
+  console.log(`Expected ${signer}, recovered ${recoveredAddress}`)
 
   return false
 }