diff --git a/package-lock.json b/package-lock.json
index 9237949..154ef35 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1521,9 +1521,9 @@
       "link": true
     },
     "node_modules/@qng/meerchange-contracts": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/@qng/meerchange-contracts/-/meerchange-contracts-0.0.3.tgz",
-      "integrity": "sha512-Sn/aJnaZZVu0fyw988xbqlXnAal6vv8peZPsfdiQvl4cb5Z+4vh8XADokCTCnRCP+SBnvEowD+u8mpvAs9qrMg==",
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/@qng/meerchange-contracts/-/meerchange-contracts-0.0.4.tgz",
+      "integrity": "sha512-Vm7vq8fayAxnxEFaOzix8dENiG6Y6IC2zQaJAZsqpVJR7KXkvQhA6Bz2E6YXDRVVvsP6FcYMGMhWh4FZh3f5Sg==",
       "dev": true
     },
     "node_modules/@scure/base": {
@@ -11783,7 +11783,8 @@
       }
     },
     "src/eip4337": {
-      "version": "0.6.6",
+      "name": "@qng/eip4337-sdk",
+      "version": "0.6.10",
       "license": "MIT",
       "devDependencies": {
         "@account-abstraction/sdk": "^0.6.0",
@@ -11791,7 +11792,7 @@
         "@nomicfoundation/hardhat-toolbox": "^1.0.2",
         "@nomiclabs/hardhat-ethers": "^2.0.0",
         "@qng/eip4337-contracts": "^0.6.0",
-        "@qng/meerchange-contracts": "^0.0.3",
+        "@qng/meerchange-contracts": "^0.0.4",
         "chai": "^4.3.6",
         "hardhat": "^2.11.0"
       }
diff --git a/src/eip4337/address.ts b/src/eip4337/address.ts
index baa86ca..f9d52ea 100644
--- a/src/eip4337/address.ts
+++ b/src/eip4337/address.ts
@@ -1,4 +1,4 @@
 export const EntryPointAddr = `0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789`;
-export const QngAccountFactoryAddr = `0xa95a633294a8ce18298B488858d90c4E16FD0AB0`;
-export const QngPaymasterAddr = `0x016001559A8685af58C45f0d6408fF88075343c5`;
-export const MeerChangeAddr = `0x09654c5D28b462BA219038e534e685f703B2EE5f`;
+export const QngAccountFactoryAddr = `0x5c5ac24588658551bdc7C18D266AbF28d47e6039`;
+export const QngPaymasterAddr = `0x6A8E1b74a5e06687ce47959575dE51A20004be0F`;
+export const MeerChangeAddr = `0x7D698C4E800dBc1E9B7e915BefeDdB59Aa9E8BB6`;
diff --git a/src/eip4337/meerchange.ts b/src/eip4337/meerchange.ts
index 35414eb..62c7349 100644
--- a/src/eip4337/meerchange.ts
+++ b/src/eip4337/meerchange.ts
@@ -1,7 +1,6 @@
 import * as contracts from "@qng/meerchange-contracts";
 
 import { Provider } from "@ethersproject/providers";
-import { ethers } from "ethers";
 export class MeerChangeAPI {
   meerchangeContract: any;
   meerchangeAddr: string;
@@ -19,19 +18,10 @@ export class MeerChangeAPI {
     }
     return this.meerchangeContract;
   }
-  async encodeExport4337(
-    txid: string,
-    idx: number,
-    fee: number,
-    signature: string
-  ) {
-    if (!txid.startsWith("0x")) {
-      txid = `0x${txid}`;
-    }
+  async encodeExport4337(ops: string, fee: number, signature: string) {
     const meerchangeContract = await this._getMeerChangeContract();
     return meerchangeContract.interface.encodeFunctionData("export", [
-      ethers.utils.hexZeroPad(txid, 32),
-      idx,
+      ops,
       fee,
       signature,
     ]);
diff --git a/src/eip4337/package.json b/src/eip4337/package.json
index f26eb20..dee0138 100644
--- a/src/eip4337/package.json
+++ b/src/eip4337/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@qng/eip4337-sdk",
   "description": "Qng Account Abstraction (EIP 4337) contracts SDK",
-  "version": "0.6.8",
+  "version": "0.6.10",
   "main": "./dist/index.js",
   "files": [
     "dist/"
@@ -32,7 +32,7 @@
   },
   "devDependencies": {
     "@qng/eip4337-contracts": "^0.6.0",
-    "@qng/meerchange-contracts": "^0.0.3",
+    "@qng/meerchange-contracts": "^0.0.4",
     "@account-abstraction/sdk": "^0.6.0",
     "@nomicfoundation/hardhat-chai-matchers": "^1.0.3",
     "@nomicfoundation/hardhat-toolbox": "^1.0.2",
diff --git a/src/eip4337/test/4-encodeExport4337.test.ts b/src/eip4337/test/4-encodeExport4337.test.ts
new file mode 100644
index 0000000..0a1d517
--- /dev/null
+++ b/src/eip4337/test/4-encodeExport4337.test.ts
@@ -0,0 +1,16 @@
+import { MeerChangeAPI, MeerChangeAddr } from "../";
+
+describe("export4337", () => {
+  const abi = new MeerChangeAPI({
+    meerchangeAddr: MeerChangeAddr,
+  });
+
+  it("returns a gas value proportional to sigSize", async () => {
+    const data = await abi.encodeExport4337(
+      "d47e847a8ac828abc27109b3f94a053c4dba53ccc6eb37cb7872435e0ee8936a:0",
+      10000,
+      "3097947d270698a7f7d6bd5b9f4b725af77c9c866219893f75b63f2207370d5279249ec5cccc4973c343f299d086412c9443bb4f30e283a628f7043c6c0b14be00"
+    );
+    console.log(data);
+  });
+});