diff --git a/src/AttestationRegistry.sol b/src/AttestationRegistry.sol
index 57176b7e..f0a922f2 100644
--- a/src/AttestationRegistry.sol
+++ b/src/AttestationRegistry.sol
@@ -2,7 +2,6 @@
 pragma solidity 0.8.21;
 
 import { OwnableUpgradeable } from "openzeppelin-contracts-upgradeable/contracts/access/OwnableUpgradeable.sol";
-import { ERC1155Upgradeable } from "openzeppelin-contracts-upgradeable/contracts/token/ERC1155/ERC1155Upgradeable.sol";
 import { Attestation, AttestationPayload } from "./types/Structs.sol";
 import { PortalRegistry } from "./PortalRegistry.sol";
 import { SchemaRegistry } from "./SchemaRegistry.sol";
@@ -13,7 +12,7 @@ import { IRouter } from "./interface/IRouter.sol";
  * @author Consensys
  * @notice This contract stores a registry of all attestations
  */
-contract AttestationRegistry is OwnableUpgradeable, ERC1155Upgradeable {
+contract AttestationRegistry is OwnableUpgradeable {
   IRouter public router;
 
   uint16 private version;
@@ -263,37 +262,4 @@ contract AttestationRegistry is OwnableUpgradeable, ERC1155Upgradeable {
   function getAttestationIdCounter() public view returns (uint32) {
     return attestationIdCounter;
   }
-
-  /**
-   * @notice Checks if an address owns a given attestation
-   * @param account The address of the token holder
-   * @param id ID of the attestation
-   * @return The _owner's balance of the attestations on a given attestation ID
-   */
-  function balanceOf(address account, uint256 id) public view override returns (uint256) {
-    bytes32 attestationId = bytes32(abi.encode(id));
-    Attestation memory attestation = attestations[attestationId];
-    if (keccak256(attestation.subject) == keccak256(abi.encode(account))) return 1;
-    return 0;
-  }
-
-  /**
-   * @notice Get the balance of multiple account/attestation pairs
-   * @param accounts The addresses of the attestation holders
-   * @param ids ID of the attestations
-   * @return The _owner's balance of the attestation for a given address (i.e. balance for each (owner, id) pair)
-   */
-  function balanceOfBatch(
-    address[] memory accounts,
-    uint256[] memory ids
-  ) public view override returns (uint256[] memory) {
-    if (accounts.length != ids.length) revert ArrayLengthMismatch();
-    uint256[] memory result = new uint256[](accounts.length);
-    for (uint256 i = 0; i < accounts.length; i++) {
-      bytes32 attestationId = bytes32(abi.encode(ids[i]));
-      Attestation memory attestation = attestations[attestationId];
-      if (keccak256(attestation.subject) == keccak256(abi.encode(accounts[i]))) result[i] = 1;
-    }
-    return result;
-  }
 }
diff --git a/test/AttestationRegistry.t.sol b/test/AttestationRegistry.t.sol
index 88ac3085..f6d3f1b2 100644
--- a/test/AttestationRegistry.t.sol
+++ b/test/AttestationRegistry.t.sol
@@ -484,76 +484,25 @@ contract AttestationRegistryTest is Test {
     SchemaRegistryMock schemaRegistryMock = SchemaRegistryMock(router.getSchemaRegistry());
     attestationPayload.schemaId = schemaRegistryMock.getIdFromSchemaString("schemaString");
     schemaRegistryMock.createSchema("name", "description", "context", "schemaString");
-    uint32 attestationIdCounter = attestationRegistry.getAttestationIdCounter();
+    uint32 version = attestationRegistry.getAttestationIdCounter();
 
-    assertEq(attestationIdCounter, 0);
+    assertEq(version, 0);
 
     vm.startPrank(portal);
 
     attestationRegistry.attest(attestationPayload, attester);
 
-    attestationIdCounter = attestationRegistry.getAttestationIdCounter();
-    assertEq(attestationIdCounter, 1);
+    version = attestationRegistry.getAttestationIdCounter();
+    assertEq(version, 1);
 
     attestationRegistry.attest(attestationPayload, attester);
 
-    attestationIdCounter = attestationRegistry.getAttestationIdCounter();
-    assertEq(attestationIdCounter, 2);
+    version = attestationRegistry.getAttestationIdCounter();
+    assertEq(version, 2);
 
     vm.stopPrank();
   }
 
-  function test_balanceOf(AttestationPayload memory attestationPayload) public {
-    vm.assume(attestationPayload.subject.length != 0);
-    vm.assume(attestationPayload.attestationData.length != 0);
-    SchemaRegistryMock schemaRegistryMock = SchemaRegistryMock(router.getSchemaRegistry());
-    attestationPayload.schemaId = schemaRegistryMock.getIdFromSchemaString("schemaString");
-    schemaRegistryMock.createSchema("name", "description", "context", "schemaString");
-
-    vm.startPrank(portal);
-    attestationPayload.subject = abi.encode(address(1));
-    attestationRegistry.attest(attestationPayload, attester);
-
-    uint256 balance = attestationRegistry.balanceOf(address(1), 1);
-    assertEq(balance, 1);
-  }
-
-  function test_balanceOfBatch(AttestationPayload memory attestationPayload) public {
-    vm.assume(attestationPayload.subject.length != 0);
-    vm.assume(attestationPayload.attestationData.length != 0);
-    SchemaRegistryMock schemaRegistryMock = SchemaRegistryMock(router.getSchemaRegistry());
-    attestationPayload.schemaId = schemaRegistryMock.getIdFromSchemaString("schemaString");
-    schemaRegistryMock.createSchema("name", "description", "context", "schemaString");
-
-    address[] memory owners = new address[](2);
-    owners[0] = address(1);
-    owners[1] = address(2);
-
-    vm.startPrank(portal);
-    attestationPayload.subject = abi.encode(owners[0]);
-    attestationRegistry.attest(attestationPayload, attester);
-
-    attestationPayload.subject = abi.encode(owners[1]);
-    attestationRegistry.attest(attestationPayload, attester);
-
-    uint256[] memory ids = new uint256[](2);
-    ids[0] = 1;
-    ids[1] = 2;
-    uint256[] memory balance = attestationRegistry.balanceOfBatch(owners, ids);
-    assertEq(balance[0], 1);
-    assertEq(balance[1], 1);
-  }
-
-  function test_balanceOfBatch_ArrayLengthMismatch() public {
-    address[] memory owners = new address[](2);
-    owners[0] = address(1);
-    owners[1] = address(2);
-    uint256[] memory ids = new uint256[](1);
-    ids[0] = 1;
-    vm.expectRevert(AttestationRegistry.ArrayLengthMismatch.selector);
-    attestationRegistry.balanceOfBatch(owners, ids);
-  }
-
   function _createAttestation(
     AttestationPayload memory attestationPayload,
     uint256 id