diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/Erc721Bridge.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/Erc721Bridge.md
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+---
+title: Erc721Bridge
+---
+
+## Erc721Bridge
+
+This contract is an ERC-721 token bridge contract which is deployed on both L1 and L2.
+which calls the library implementations. See _IErc721Bridge_ for more details.
+
+_The code hash for the same address on L1 and L2 may be different._
+
+### MessageStatusChanged
+
+```solidity
+event MessageStatusChanged(bytes32 msgHash, enum LibErc721BridgeStatus.MessageStatus status, address transactor)
+```
+
+### DestChainEnabled
+
+```solidity
+event DestChainEnabled(uint256 chainId, bool enabled)
+```
+
+### init
+
+```solidity
+function init(address _addressManager) external
+```
+
+Initializer to be called after being deployed behind a proxy.
+
+_Initializer function to setup the EssentialContract._
+
+#### Parameters
+
+| Name             | Type    | Description                                 |
+| ---------------- | ------- | ------------------------------------------- |
+| \_addressManager | address | The address of the AddressManager contract. |
+
+### sendMessageErc721
+
+```solidity
+function sendMessageErc721(struct IErc721Bridge.Message message) external payable returns (bytes32 msgHash)
+```
+
+Sends a message from the current chain to the destination chain specified
+in the message.
+
+_Sends a message by calling the LibErc721BridgeSend.sendMessageErc721 library
+function._
+
+#### Parameters
+
+| Name    | Type                         | Description                        |
+| ------- | ---------------------------- | ---------------------------------- |
+| message | struct IErc721Bridge.Message | The message to send. (See IBridge) |
+
+#### Return Values
+
+| Name    | Type    | Description                            |
+| ------- | ------- | -------------------------------------- |
+| msgHash | bytes32 | The hash of the message that was sent. |
+
+### releaseTokenErc721
+
+```solidity
+function releaseTokenErc721(struct IErc721Bridge.Message message, bytes proof) external
+```
+
+Releases the Ether locked in the bridge as part of a cross-chain
+transfer.
+
+_Releases the Ether by calling the LibBridgeRelease.releaseEther
+library function._
+
+#### Parameters
+
+| Name    | Type                         | Description                                                             |
+| ------- | ---------------------------- | ----------------------------------------------------------------------- |
+| message | struct IErc721Bridge.Message | The message containing the details of the Ether transfer. (See IBridge) |
+| proof   | bytes                        | The proof of the cross-chain transfer.                                  |
+
+### isMessageSentErc721
+
+```solidity
+function isMessageSentErc721(bytes32 msgHash) public view virtual returns (bool)
+```
+
+Check if the message with the given hash has been sent.
+
+#### Parameters
+
+| Name    | Type    | Description              |
+| ------- | ------- | ------------------------ |
+| msgHash | bytes32 | The hash of the message. |
+
+#### Return Values
+
+| Name | Type | Description                                                 |
+| ---- | ---- | ----------------------------------------------------------- |
+| [0]  | bool | Returns true if the message has been sent, false otherwise. |
+
+### isMessageReceivedErc721
+
+```solidity
+function isMessageReceivedErc721(bytes32 msgHash, uint256 srcChainId, bytes proof) public view virtual returns (bool)
+```
+
+Check if the message with the given hash has been received.
+
+#### Parameters
+
+| Name       | Type    | Description                   |
+| ---------- | ------- | ----------------------------- |
+| msgHash    | bytes32 | The hash of the message.      |
+| srcChainId | uint256 | The source chain ID.          |
+| proof      | bytes   | The proof of message receipt. |
+
+#### Return Values
+
+| Name | Type | Description                                                     |
+| ---- | ---- | --------------------------------------------------------------- |
+| [0]  | bool | Returns true if the message has been received, false otherwise. |
+
+### isMessageFailedErc721
+
+```solidity
+function isMessageFailedErc721(bytes32 msgHash, uint256 destChainId, bytes proof) public view virtual returns (bool)
+```
+
+Check if the message with the given hash has failed.
+
+#### Parameters
+
+| Name        | Type    | Description                   |
+| ----------- | ------- | ----------------------------- |
+| msgHash     | bytes32 | The hash of the message.      |
+| destChainId | uint256 | The destination chain ID.     |
+| proof       | bytes   | The proof of message failure. |
+
+#### Return Values
+
+| Name | Type | Description                                              |
+| ---- | ---- | -------------------------------------------------------- |
+| [0]  | bool | Returns true if the message has failed, false otherwise. |
+
+### getMessageStatusErc721
+
+```solidity
+function getMessageStatusErc721(bytes32 msgHash) public view virtual returns (enum LibErc721BridgeStatus.MessageStatus)
+```
+
+Get the status of the message with the given hash.
+
+#### Parameters
+
+| Name    | Type    | Description              |
+| ------- | ------- | ------------------------ |
+| msgHash | bytes32 | The hash of the message. |
+
+#### Return Values
+
+| Name | Type                                     | Description                        |
+| ---- | ---------------------------------------- | ---------------------------------- |
+| [0]  | enum LibErc721BridgeStatus.MessageStatus | Returns the status of the message. |
+
+### context
+
+```solidity
+function context() public view returns (struct IErc721Bridge.Context)
+```
+
+Get the current context
+
+#### Return Values
+
+| Name | Type                         | Description                  |
+| ---- | ---------------------------- | ---------------------------- |
+| [0]  | struct IErc721Bridge.Context | Returns the current context. |
+
+### isDestChainEnabled
+
+```solidity
+function isDestChainEnabled(uint256 _chainId) public view returns (bool enabled)
+```
+
+Check if the destination chain with the given ID is enabled.
+
+#### Parameters
+
+| Name      | Type    | Description          |
+| --------- | ------- | -------------------- |
+| \_chainId | uint256 | The ID of the chain. |
+
+#### Return Values
+
+| Name    | Type | Description                                                        |
+| ------- | ---- | ------------------------------------------------------------------ |
+| enabled | bool | Returns true if the destination chain is enabled, false otherwise. |
+
+### hashMessage
+
+```solidity
+function hashMessage(struct IErc721Bridge.Message message) public pure returns (bytes32)
+```
+
+Compute the hash of a given message.
+
+#### Parameters
+
+| Name    | Type                         | Description                          |
+| ------- | ---------------------------- | ------------------------------------ |
+| message | struct IErc721Bridge.Message | The message to compute the hash for. |
+
+#### Return Values
+
+| Name | Type    | Description                      |
+| ---- | ------- | -------------------------------- |
+| [0]  | bytes32 | Returns the hash of the message. |
+
+### getMessageStatusSlot
+
+```solidity
+function getMessageStatusSlot(bytes32 msgHash) public pure returns (bytes32)
+```
+
+Get the slot associated with a given message hash status.
+
+#### Parameters
+
+| Name    | Type    | Description              |
+| ------- | ------- | ------------------------ |
+| msgHash | bytes32 | The hash of the message. |
+
+#### Return Values
+
+| Name | Type    | Description                                                     |
+| ---- | ------- | --------------------------------------------------------------- |
+| [0]  | bytes32 | Returns the slot associated with the given message hash status. |
+
+---
+
+## title: ProxiedErc721Bridge
+
+## ProxiedErc721Bridge
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/Erc721Vault.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/Erc721Vault.md
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@@ -0,0 +1,116 @@
+---
+title: Erc721Vault
+---
+
+## Erc721Vault
+
+This contract is for vaulting (and releasing) ERC721 tokens
+
+_Only the contract owner can authorize or deauthorize addresses._
+
+### ContractMapping
+
+```solidity
+struct ContractMapping {
+  address sisterContract;
+  string tokenName;
+  string tokenSymbol;
+  mapping(uint256 => bool) tokenInVault;
+}
+```
+
+### originalToWrapperData
+
+```solidity
+mapping(address => struct Erc721Vault.ContractMapping) originalToWrapperData
+```
+
+### Authorized
+
+```solidity
+event Authorized(address addr, bool authorized)
+```
+
+### TokensReleased
+
+```solidity
+event TokensReleased(address to, address contractAddress, uint256[] tokenIds)
+```
+
+### onlyAuthorized
+
+```solidity
+modifier onlyAuthorized()
+```
+
+### init
+
+```solidity
+function init(address addressManager) external
+```
+
+Initialize the contract with an address manager
+
+#### Parameters
+
+| Name           | Type    | Description                        |
+| -------------- | ------- | ---------------------------------- |
+| addressManager | address | The address of the address manager |
+
+### releaseTokens
+
+```solidity
+function releaseTokens(address recipient, address tokenContract, uint256[] tokenIds) public
+```
+
+Transfer token(s) from Erc721Vault to a designated address, checking that the
+sender is authorized.
+
+#### Parameters
+
+| Name          | Type      | Description                  |
+| ------------- | --------- | ---------------------------- |
+| recipient     | address   | Address to receive Ether.    |
+| tokenContract | address   | Token contract.              |
+| tokenIds      | uint256[] | Array of tokenIds to be sent |
+
+### authorize
+
+```solidity
+function authorize(address addr, bool authorized) public
+```
+
+Set the authorized status of an address, only the owner can call this.
+
+#### Parameters
+
+| Name       | Type    | Description                              |
+| ---------- | ------- | ---------------------------------------- |
+| addr       | address | Address to set the authorized status of. |
+| authorized | bool    | Authorized status to set.                |
+
+### isAuthorized
+
+```solidity
+function isAuthorized(address addr) public view returns (bool)
+```
+
+Get the authorized status of an address.
+
+#### Parameters
+
+| Name | Type    | Description                              |
+| ---- | ------- | ---------------------------------------- |
+| addr | address | Address to get the authorized status of. |
+
+### onERC721Received
+
+```solidity
+function onERC721Received(address, address, uint256, bytes) external pure returns (bytes4)
+```
+
+---
+
+## title: ProxiedErc721Vault
+
+## ProxiedErc721Vault
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/NftBridgeErrors.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/NftBridgeErrors.md
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index 00000000000..6a68564d272
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/NftBridgeErrors.md
@@ -0,0 +1,59 @@
+---
+title: NftBridgeErrors
+---
+
+## NftBridgeErrors
+
+### ERC721_TV_NOT_AUTHORIZED
+
+```solidity
+error ERC721_TV_NOT_AUTHORIZED()
+```
+
+### ERC721_TV_DO_NOT_BURN
+
+```solidity
+error ERC721_TV_DO_NOT_BURN()
+```
+
+### ERC721_B_TV_PARAM
+
+```solidity
+error ERC721_B_TV_PARAM()
+```
+
+### ERC721_B_FORBIDDEN
+
+```solidity
+error ERC721_B_FORBIDDEN()
+```
+
+### ERC721_B_WRONG_CHAIN_ID
+
+```solidity
+error ERC721_B_WRONG_CHAIN_ID()
+```
+
+### ERC721_B_STATUS_MISMATCH
+
+```solidity
+error ERC721_B_STATUS_MISMATCH()
+```
+
+### ERC721_B_SIGNAL_NOT_RECEIVED
+
+```solidity
+error ERC721_B_SIGNAL_NOT_RECEIVED()
+```
+
+### ERC721_B_OWNER_IS_NULL
+
+```solidity
+error ERC721_B_OWNER_IS_NULL()
+```
+
+### ERC721_B_WRONG_TO_ADDRESS
+
+```solidity
+error ERC721_B_WRONG_TO_ADDRESS()
+```
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/IErc721Bridge.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/IErc721Bridge.md
new file mode 100644
index 00000000000..bfff21613df
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/IErc721Bridge.md
@@ -0,0 +1,115 @@
+---
+title: IErc721Bridge
+---
+
+## IErc721Bridge
+
+Bridge interface for NFT contracts.
+
+_Ether is held by Bridges on L1 and by the EtherVault on L2,
+not TokenVaults._
+
+### Message
+
+```solidity
+struct Message {
+  uint256 id;
+  address sender;
+  uint256 srcChainId;
+  uint256 destChainId;
+  address owner;
+  address to;
+  address refundAddress;
+  address tokenContract;
+  uint256[] tokenIds;
+  uint256 processingFee;
+  uint256 gasLimit;
+  string tokenSymbol;
+  string tokenName;
+  string[] tokenURIs;
+}
+```
+
+### Context
+
+```solidity
+struct Context {
+  bytes32 msgHash;
+  address sender;
+  uint256 srcChainId;
+}
+```
+
+### SignalSentErc721
+
+```solidity
+event SignalSentErc721(address sender, bytes32 msgHash)
+```
+
+### MessageSentErc721
+
+```solidity
+event MessageSentErc721(bytes32 msgHash, struct IErc721Bridge.Message message)
+```
+
+### TokenReleasedErc721
+
+```solidity
+event TokenReleasedErc721(bytes32 msgHash, address to, address token, uint256 tokenId)
+```
+
+### sendMessageErc721
+
+```solidity
+function sendMessageErc721(struct IErc721Bridge.Message message) external payable returns (bytes32 msgHash)
+```
+
+Sends a message to the destination chain and takes custody
+of the token(s) required in this contract.
+
+### releaseTokenErc721
+
+```solidity
+function releaseTokenErc721(struct IErc721Bridge.Message message, bytes proof) external
+```
+
+### isMessageSentErc721
+
+```solidity
+function isMessageSentErc721(bytes32 msgHash) external view returns (bool)
+```
+
+Checks if a msgHash has been stored on the bridge contract by the
+current address.
+
+### isMessageReceivedErc721
+
+```solidity
+function isMessageReceivedErc721(bytes32 msgHash, uint256 srcChainId, bytes proof) external view returns (bool)
+```
+
+Checks if a msgHash has been received on the destination chain and
+sent by the src chain.
+
+### isMessageFailedErc721
+
+```solidity
+function isMessageFailedErc721(bytes32 msgHash, uint256 destChainId, bytes proof) external view returns (bool)
+```
+
+Checks if a msgHash has been failed on the destination chain.
+
+### context
+
+```solidity
+function context() external view returns (struct IErc721Bridge.Context context)
+```
+
+Returns the bridge state context.
+
+### hashMessage
+
+```solidity
+function hashMessage(struct IErc721Bridge.Message message) external pure returns (bytes32)
+```
+
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeData.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeData.md
new file mode 100644
index 00000000000..1ffd9784e81
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeData.md
@@ -0,0 +1,87 @@
+---
+title: LibErc721BridgeData
+---
+
+## LibErc721BridgeData
+
+Stores message metadata on the Bridge. It's used to keep track of the state
+of messages that are being
+transferred across the bridge, and it contains functions to hash messages and
+check their status.
+
+### State
+
+_The State struct stores the state of messages in the Bridge
+contract._
+
+```solidity
+struct State {
+  uint256 nextMessageId;
+  struct IErc721Bridge.Context ctx;
+  mapping(bytes32 => bool) tokensReleased;
+  uint256[45] __gap;
+}
+```
+
+### StatusProof
+
+_StatusProof holds the block header and proof for a particular
+status._
+
+```solidity
+struct StatusProof {
+  struct BlockHeader header;
+  bytes proof;
+}
+```
+
+### MESSAGE_HASH_PLACEHOLDER
+
+```solidity
+bytes32 MESSAGE_HASH_PLACEHOLDER
+```
+
+### CHAINID_PLACEHOLDER
+
+```solidity
+uint256 CHAINID_PLACEHOLDER
+```
+
+### SRC_CHAIN_SENDER_PLACEHOLDER
+
+```solidity
+address SRC_CHAIN_SENDER_PLACEHOLDER
+```
+
+### MessageSentErc721
+
+```solidity
+event MessageSentErc721(bytes32 msgHash, struct IErc721Bridge.Message message)
+```
+
+### DestChainEnabledErc721
+
+```solidity
+event DestChainEnabledErc721(uint256 chainId, bool enabled)
+```
+
+### hashMessage
+
+```solidity
+function hashMessage(struct IErc721Bridge.Message message) internal pure returns (bytes32)
+```
+
+Calculate the keccak256 hash of the message
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| message | struct IErc721Bridge.Message | The message to be hashed |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | bytes32 | msgHash The keccak256 hash of the message |
+
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeProcess.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeProcess.md
new file mode 100644
index 00000000000..5bd908cc770
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeProcess.md
@@ -0,0 +1,51 @@
+---
+title: LibErc721BridgeProcess
+---
+
+## LibErc721BridgeProcess
+
+This library provides functions for processing bridge messages on the
+destination chain.
+
+### ERC721_B_FORBIDDEN
+
+```solidity
+error ERC721_B_FORBIDDEN()
+```
+
+### ERC721_B_SIGNAL_NOT_RECEIVED
+
+```solidity
+error ERC721_B_SIGNAL_NOT_RECEIVED()
+```
+
+### ERC721_B_STATUS_MISMATCH
+
+```solidity
+error ERC721_B_STATUS_MISMATCH()
+```
+
+### ERC721_B_WRONG_CHAIN_ID
+
+```solidity
+error ERC721_B_WRONG_CHAIN_ID()
+```
+
+### processMessage
+
+```solidity
+function processMessage(struct LibErc721BridgeData.State state, contract AddressResolver resolver, struct IErc721Bridge.Message message, bytes proof) internal
+```
+
+Process the bridge message on the destination chain. It can be called by
+any address, including `message.owner`.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| state | struct LibErc721BridgeData.State | The bridge state. |
+| resolver | contract AddressResolver | The address resolver. |
+| message | struct IErc721Bridge.Message | The message to process. |
+| proof | bytes | The msgHash proof from the source chain. |
+
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeSend.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeSend.md
new file mode 100644
index 00000000000..7942743456f
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeSend.md
@@ -0,0 +1,120 @@
+---
+title: LibErc721BridgeSend
+---
+
+## LibErc721BridgeSend
+
+Entry point for starting a bridge transaction.
+
+### B_INCORRECT_VALUE
+
+```solidity
+error B_INCORRECT_VALUE()
+```
+
+### ERC721_B_OWNER_IS_NULL
+
+```solidity
+error ERC721_B_OWNER_IS_NULL()
+```
+
+### ERC721_B_WRONG_CHAIN_ID
+
+```solidity
+error ERC721_B_WRONG_CHAIN_ID()
+```
+
+### ERC721_B_WRONG_TO_ADDRESS
+
+```solidity
+error ERC721_B_WRONG_TO_ADDRESS()
+```
+
+### sendMessageErc721
+
+```solidity
+function sendMessageErc721(struct LibErc721BridgeData.State state, contract AddressResolver resolver, struct IErc721Bridge.Message message) internal returns (bytes32 msgHash)
+```
+
+Send a message to the Bridge with the details of the request.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| state | struct LibErc721BridgeData.State | The current state of the Bridge |
+| resolver | contract AddressResolver | The address resolver |
+| message | struct IErc721Bridge.Message | Specifies the `depositValue`, `callValue`, and `processingFee`. These must sum to `msg.value`. It also specifies the `destChainId` which must have a `bridge` address set on the AddressResolver and differ from the current chain ID. |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| msgHash | bytes32 | The hash of the sent message. This is picked up by an off-chain relayer which indicates a bridge message has been sent and is ready to be processed on the destination chain. |
+
+### isDestChainEnabled
+
+```solidity
+function isDestChainEnabled(contract AddressResolver resolver, uint256 chainId) internal view returns (bool enabled, address destBridge)
+```
+
+Check if the destination chain is enabled.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| resolver | contract AddressResolver | The address resolver |
+| chainId | uint256 | The destination chain id |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| enabled | bool | True if the destination chain is enabled |
+| destBridge | address | The bridge of the destination chain |
+
+### isMessageSentErc721
+
+```solidity
+function isMessageSentErc721(contract AddressResolver resolver, bytes32 msgHash) internal view returns (bool)
+```
+
+Check if the message was sent.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| resolver | contract AddressResolver | The address resolver |
+| msgHash | bytes32 | The hash of the sent message |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | bool | True if the message was sent |
+
+### isMessageReceivedErc721
+
+```solidity
+function isMessageReceivedErc721(contract AddressResolver resolver, bytes32 msgHash, uint256 srcChainId, bytes proof) internal view returns (bool)
+```
+
+Check if the message was received.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| resolver | contract AddressResolver | The address resolver |
+| msgHash | bytes32 | The hash of the received message |
+| srcChainId | uint256 | The id of the source chain |
+| proof | bytes | The proof of message receipt |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | bool | True if the message was received |
+
diff --git a/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeStatus.md b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeStatus.md
new file mode 100644
index 00000000000..5e737888284
--- /dev/null
+++ b/packages/website/pages/docs/reference/contract-documentation/nft_bridge/erc721/libs/LibErc721BridgeStatus.md
@@ -0,0 +1,116 @@
+---
+title: LibErc721BridgeStatus
+---
+
+## LibErc721BridgeStatus
+
+This library provides functions to get and update the status of bridge
+messages.
+
+### MessageStatus
+
+```solidity
+enum MessageStatus {
+  NEW,
+  RETRIABLE,
+  DONE,
+  FAILED
+}
+```
+
+### MessageStatusChangedErc721
+
+```solidity
+event MessageStatusChangedErc721(bytes32 msgHash, enum LibErc721BridgeStatus.MessageStatus status, address transactor)
+```
+
+### B_MSG_HASH_NULL
+
+```solidity
+error B_MSG_HASH_NULL()
+```
+
+### B_WRONG_CHAIN_ID
+
+```solidity
+error B_WRONG_CHAIN_ID()
+```
+
+### updateMessageStatusErc721
+
+```solidity
+function updateMessageStatusErc721(bytes32 msgHash, enum LibErc721BridgeStatus.MessageStatus status) internal
+```
+
+Updates the status of a bridge message.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| msgHash | bytes32 | The hash of the message. |
+| status | enum LibErc721BridgeStatus.MessageStatus | The new status of the message. |
+
+### getMessageStatusErc721
+
+```solidity
+function getMessageStatusErc721(bytes32 msgHash) internal view returns (enum LibErc721BridgeStatus.MessageStatus)
+```
+
+Gets the status of a bridge message.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| msgHash | bytes32 | The hash of the message. |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | enum LibErc721BridgeStatus.MessageStatus | The status of the message. |
+
+### isMessageFailedErc721
+
+```solidity
+function isMessageFailedErc721(contract AddressResolver resolver, bytes32 msgHash, uint256 destChainId, bytes proof) internal view returns (bool)
+```
+
+Checks if a bridge message has failed.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| resolver | contract AddressResolver | The address resolver. |
+| msgHash | bytes32 | The hash of the message. |
+| destChainId | uint256 | The ID of the destination chain. |
+| proof | bytes | The proof of the status of the message. |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | bool | True if the message has failed, false otherwise. |
+
+### getMessageStatusSlot
+
+```solidity
+function getMessageStatusSlot(bytes32 msgHash) internal pure returns (bytes32)
+```
+
+Gets the storage slot for a bridge message status.
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| msgHash | bytes32 | The hash of the message. |
+
+#### Return Values
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| [0] | bytes32 | The storage slot for the message status. |
+