> For the complete documentation index, see [llms.txt](https://seer-3.gitbook.io/seer-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://seer-3.gitbook.io/seer-documentation/developers/contracts/interaction/conditional-tokens/erc1155/ierc1155.md).

# IERC1155

## Events

### TransferSingle

```solidity
event TransferSingle(address operator, address from, address to, uint256 id, uint256 value)
```

### TransferBatch

```solidity
event TransferBatch(address operator, address from, address to, uint256[] ids, uint256[] values)
```

### ApprovalForAll

```solidity
event ApprovalForAll(address owner, address operator, bool approved)
```

### URI

```solidity
event URI(string value, uint256 id)
```

## Functions

### balanceOf

```solidity
function balanceOf(address owner, uint256 id) public view returns (uint256)
```

### balanceOfBatch

```solidity
function balanceOfBatch(address[] owners, uint256[] ids) public view returns (uint256[])
```

### setApprovalForAll

```solidity
function setApprovalForAll(address operator, bool approved) external
```

### isApprovedForAll

```solidity
function isApprovedForAll(address owner, address operator) external view returns (bool)
```

### safeTransferFrom

```solidity
function safeTransferFrom(address from, address to, uint256 id, uint256 value, bytes data) external
```

### safeBatchTransferFrom

```solidity
function safeBatchTransferFrom(address from, address to, uint256[] ids, uint256[] values, bytes data) external
```