diff --git a/src/classes/test/Contract/arcade/arcade.abi.json b/src/classes/test/Contract/arcade/arcade.abi.json
new file mode 100644
index 0000000..0bd7117
--- /dev/null
+++ b/src/classes/test/Contract/arcade/arcade.abi.json
@@ -0,0 +1,173 @@
+[
+  {
+    "inputs": [
+      { "internalType": "bytes32", "name": "_merkleRoot", "type": "bytes32" },
+      {
+        "internalType": "contract IERC20",
+        "name": "_token",
+        "type": "address"
+      },
+      { "internalType": "uint256", "name": "_expiration", "type": "uint256" },
+      {
+        "internalType": "contract INFTBoostVault",
+        "name": "_votingVault",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "nonpayable",
+    "type": "constructor"
+  },
+  { "inputs": [], "name": "AA_AlreadyClaimed", "type": "error" },
+  { "inputs": [], "name": "AA_ClaimingExpired", "type": "error" },
+  { "inputs": [], "name": "AA_ClaimingNotExpired", "type": "error" },
+  { "inputs": [], "name": "AA_NonParticipant", "type": "error" },
+  { "inputs": [], "name": "AA_NotInitialized", "type": "error" },
+  {
+    "inputs": [
+      { "internalType": "string", "name": "addressType", "type": "string" }
+    ],
+    "name": "AA_ZeroAddress",
+    "type": "error"
+  },
+  {
+    "anonymous": false,
+    "inputs": [
+      {
+        "indexed": true,
+        "internalType": "bytes32",
+        "name": "merkleRoot",
+        "type": "bytes32"
+      },
+      {
+        "indexed": true,
+        "internalType": "uint256",
+        "name": "expiration",
+        "type": "uint256"
+      }
+    ],
+    "name": "SetMerkleRoot",
+    "type": "event"
+  },
+  {
+    "inputs": [{ "internalType": "address", "name": "who", "type": "address" }],
+    "name": "authorize",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "address", "name": "", "type": "address" }],
+    "name": "authorized",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "delegate", "type": "address" },
+      { "internalType": "uint128", "name": "totalGrant", "type": "uint128" },
+      {
+        "internalType": "bytes32[]",
+        "name": "merkleProof",
+        "type": "bytes32[]"
+      }
+    ],
+    "name": "claimAndDelegate",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "", "type": "address" },
+      { "internalType": "bytes32", "name": "", "type": "bytes32" }
+    ],
+    "name": "claimed",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "address", "name": "who", "type": "address" }],
+    "name": "deauthorize",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "expiration",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "address", "name": "who", "type": "address" }],
+    "name": "isAuthorized",
+    "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "owner",
+    "outputs": [{ "internalType": "address", "name": "", "type": "address" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "address", "name": "destination", "type": "address" }
+    ],
+    "name": "reclaim",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "rewardsRoot",
+    "outputs": [{ "internalType": "bytes32", "name": "", "type": "bytes32" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [
+      { "internalType": "bytes32", "name": "_merkleRoot", "type": "bytes32" },
+      { "internalType": "uint256", "name": "_expiration", "type": "uint256" }
+    ],
+    "name": "setMerkleRoot",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [{ "internalType": "address", "name": "who", "type": "address" }],
+    "name": "setOwner",
+    "outputs": [],
+    "stateMutability": "nonpayable",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "token",
+    "outputs": [
+      { "internalType": "contract IERC20", "name": "", "type": "address" }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
+    "inputs": [],
+    "name": "votingVault",
+    "outputs": [
+      {
+        "internalType": "contract INFTBoostVault",
+        "name": "",
+        "type": "address"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  }
+]
diff --git a/src/classes/test/Contract/arcade/arcade.unit.test.ts b/src/classes/test/Contract/arcade/arcade.unit.test.ts
new file mode 100644
index 0000000..42ccdfa
--- /dev/null
+++ b/src/classes/test/Contract/arcade/arcade.unit.test.ts
@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'vitest';
+import type { JSONABIArgument } from '../../../../types/Contract.types';
+import { encodeData } from '../../../utils/encode-decode-transaction';
+import abi from './arcade.abi.json';
+
+describe('arcade DAO contract', () => {
+  it('should encode [address, bytes32]', async () => {
+    const evmAddress = '0xE38a6F2045738Ea9F5Ad425E63537BA7679Eb82e';
+    const merkleRoot =
+      '0x9c76bb33425ea109e9bddd5ff9e97d10de0dc8de5d123a7c288f8387a4b2ba2d';
+    // this was captured by running it on the live network first
+    const mockEncoded =
+      '0x0f2d940b000000000000000000000000e38a6f2045738ea9f5ad425e63537ba7679eb82e9c76bb33425ea109e9bddd5ff9e97d10de0dc8de5d123a7c288f8387a4b2ba2d';
+    const args = [evmAddress, merkleRoot];
+    const jsonABIArgument = abi.find(
+      (abi) => abi.name === 'claimed',
+    ) as JSONABIArgument;
+    const encoded = encodeData(jsonABIArgument, args);
+    expect(encoded).toBe(mockEncoded);
+  });
+});
diff --git a/src/classes/test/Contract/foo.unit.test.ts b/src/classes/test/Contract/foo.unit.test.ts
index 8519a44..846d464 100644
--- a/src/classes/test/Contract/foo.unit.test.ts
+++ b/src/classes/test/Contract/foo.unit.test.ts
@@ -9,17 +9,20 @@ describe('foo encode', () => {
       (abi) => abi.name === 'baz',
     ) as JSONABIArgument;
     const encoded = encodeData(jsonABIArgument, [69, true]);
+
     expect(encoded).toBe(
       '0xcdcd77c000000000000000000000000000000000000000000000000000000000000000450000000000000000000000000000000000000000000000000000000000000001',
     );
   });
   it('encodes "bar" function', () => {
+    const args = [['0x010203', '0x040506']];
+    const functionName = 'bar';
     const jsonABIArgument = fooABI.find(
-      (abi) => abi.name === 'bar',
+      (abi) => abi.name === functionName,
     ) as JSONABIArgument;
-    const encoded = encodeData(jsonABIArgument, ['abc', 'def']);
-    expect(encoded).toBe(
-      '0xfce353f661626300000000000000000000000000000000000000000000000000000000006465660000000000000000000000000000000000000000000000000000000000',
-    );
+
+    // const iface = new Interface(fooABI as any);
+    // const ethersEncoded = iface.encodeFunctionData(functionName, args);
+    expect(() => encodeData(jsonABIArgument, args)).toThrow();
   });
 });
diff --git a/src/classes/utils/encode-decode-transaction.ts b/src/classes/utils/encode-decode-transaction.ts
index b287d14..11ad5ff 100644
--- a/src/classes/utils/encode-decode-transaction.ts
+++ b/src/classes/utils/encode-decode-transaction.ts
@@ -113,12 +113,13 @@ export function encodeData(jsonABIArgument: JSONABIArgument, args: any[]) {
         break;
       default:
         if (inputType.startsWith('bytes')) {
-          // encode each character to hex
-          const argEncoded = rawArg
-            .split('')
-            .map((character: string) => character.charCodeAt(0).toString(16))
-            .join('');
-          const paddedEncodedArg = argEncoded.padEnd(64, '0');
+          if (Array.isArray(arg)) {
+            throw new Error(
+              `essential-eth does not yet support "${inputType}[]" inputs. Make a PR today!"`,
+            );
+          }
+          const argEncoded = BigInt(arg).toString(16);
+          const paddedEncodedArg = argEncoded.padStart(64, '0');
           return paddedEncodedArg;
         } else if (inputType === 'uint256') {
           const argEncoded = BigInt(arg).toString(16);