diff --git a/chain.js b/chain.js
index 802f849..9939694 100644
--- a/chain.js
+++ b/chain.js
@@ -1,10 +1,4 @@
 import fs from "fs";
-import {keccak256} from "ethers";
-
-const vaultCode = JSON.parse(fs.readFileSync('../contract/out/Vault.sol/Vault.json').toString())
-// todo this is a per-chain value found in chainInfo
-export const VAULT_INIT_CODE_HASH = keccak256(vaultCode.bytecode.object)
-console.log('VAULT_INIT_CODE_HASH', VAULT_INIT_CODE_HASH)
 
 export const chainInfo = JSON.parse(fs.readFileSync('../contract/version.json')).chainInfo
 console.log('chainInfo', chainInfo)
diff --git a/main.js b/main.js
index afee4a1..630dd20 100644
--- a/main.js
+++ b/main.js
@@ -3,7 +3,6 @@ import 'dotenv/config'
 import {lookupToken} from "./token.js";
 import {httpServer, io} from "./io.js";
 import {ensureVault, loginAddress} from "./vault.js";
-import {chainInfo, VAULT_INIT_CODE_HASH} from "./chain.js";
 import {subOHLCs, subPools, unsubOHLCs, unsubPools} from "./pool.js";
 import {gib} from "./faucet.js";
 
diff --git a/vault.js b/vault.js
index f8f3b9a..7c42b15 100644
--- a/vault.js
+++ b/vault.js
@@ -1,7 +1,7 @@
 import {ethers} from "ethers";
 import {getProvider, getSigner} from "./blockchain.js";
 import {vaultBalances, vaults} from './cache.js';
-import {chainInfo, VAULT_INIT_CODE_HASH} from "./chain.js";
+import {chainInfo} from "./chain.js";
 import {sendVaultOrders} from "./order.js";
 import {newContract} from "./contract.js";
 
@@ -9,7 +9,7 @@ import {newContract} from "./contract.js";
 export function vaultAddress(chainId, owner, num=0) {
     try {
         const salt = ethers.solidityPackedKeccak256(['address','uint8'],[owner,num])
-        const result = ethers.getCreate2Address(chainInfo[chainId].factory, salt, VAULT_INIT_CODE_HASH)
+        const result = ethers.getCreate2Address(chainInfo[chainId].factory, salt, chainInfo[chainId].vaultInitCodeHash)
         // console.log('vaultAddress', chainId, owner, num, chainInfo[chainId].factory, salt, VAULT_INIT_CODE_HASH, result)
         return result
     }