Universal Receiver Type IDs

The LSP1 Type IDs listed below are unique identifiers used across the LSP standards for the Universal Receiver notification mechanism.

These Type IDs are sent as the typeId parameter when calling the universalReceiver(bytes32 typeId, bytes data) function on contracts implementing LSP1. They allow contracts to identify what type of notification they are receiving and react accordingly.

For instance:

• Notify a sender that LSP7 tokens are being transferred from their balance
• Notify a recipient about receiving LSP7 tokens
• Notify a profile that they have a new follower

Using Type IDs in JavaScript

The Type IDs are available as constants from the @lukso/lsp-smart-contracts npm package:

npm install @lukso/lsp-smart-contracts

import { LSP1_TYPE_IDS } from '@lukso/lsp-smart-contracts';

// Type ID for receiving native tokens (LYX)
LSP1_TYPE_IDS.LSP0ValueReceived;

// Type ID for receiving LSP7 tokens
LSP1_TYPE_IDS.LSP7Tokens_RecipientNotification;

// Type ID for follow notifications
LSP1_TYPE_IDS.LSP26FollowerSystem_FollowNotification;

Note: The JavaScript constants are exported from the @lukso/lsp-smart-contracts package. The corresponding Solidity constants are defined in each LSP's contract constants file (e.g., LSP7Constants.sol, LSP26Constants.sol).

See the lsp-smart-contracts repository for the full source code.

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LSP0 - ERC725 Account

LSP0ValueReceived

Name	"LSP0ValueReceived"
TypeID	0x9c4705229491d365fb5434052e12a386d6771d976bea61070a8c694e8affea3d
Used in:	constructor(address), receive(), fallback(bytes), execute(uint256,address,uint256,bytes), executeBatch(uint256[],address[],uint256[],bytes[]), setData(bytes32,bytes), setDataBatch(bytes32[],bytes[])
Solidity constant:	_TYPEID_LSP0_VALUE_RECEIVED
JavaScript constant:	LSP1_TYPE_IDS.LSP0ValueReceived

LSP0OwnershipTransferStarted

Name	"LSP0OwnershipTransferStarted"
TypeID	0xe17117c9d2665d1dbeb479ed8058bbebde3c50ac50e2e65619f60006caac6926
Used in:	transferOwnership(address)
Solidity constant:	_TYPEID_LSP0_OwnershipTransferStarted
JavaScript constant:	LSP1_TYPE_IDS.LSP0OwnershipTransferStarted

LSP0OwnershipTransferred_SenderNotification

Name	"LSP0OwnershipTransferred_SenderNotification"
TypeID	0xa4e59c931d14f7c8a7a35027f92ee40b5f2886b9fdcdb78f30bc5ecce5a2f814
Used in:	acceptOwnership() renounceOwnership()
Solidity constant:	_TYPEID_LSP0_OwnershipTransferred_SenderNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP0OwnershipTransferred_SenderNotification

LSP0OwnershipTransferred_RecipientNotification

Name	"LSP0OwnershipTransferred_RecipientNotification"
TypeID	0xceca317f109c43507871523e82dc2a3cc64dfa18f12da0b6db14f6e23f995538
Used in:	acceptOwnership()
Solidity constant:	_TYPEID_LSP0_OwnershipTransferred_RecipientNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP0OwnershipTransferred_RecipientNotification

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LSP7 - Digital Asset

LSP7Tokens_SenderNotification

Name	"LSP7Tokens_SenderNotification"
TypeID	0x429ac7a06903dbc9c13dfcb3c9d11df8194581fa047c96d7a4171fc7402958ea
Used in:	_burn(address,uint256,bytes), _transfer(address,address,uint256,bool,bytes)
Solidity constant:	_TYPEID_LSP7_TOKENSSENDER
JavaScript constant:	LSP1_TYPE_IDS.LSP7Tokens_SenderNotification

LSP7Tokens_RecipientNotification

Name	"LSP7Tokens_RecipientNotification"
TypeID	0x20804611b3e2ea21c480dc465142210acf4a2485947541770ec1fb87dee4a55c
Used in:	_mint(address,uint256,bool,bytes), _transfer(address,address,uint256,bool,bytes)
Solidity constant:	_TYPEID_LSP7_TOKENSRECIPIENT
JavaScript constant:	LSP1_TYPE_IDS.LSP7Tokens_RecipientNotification

LSP7Tokens_OperatorNotification

Name	"LSP7Tokens_OperatorNotification"
TypeID	0x386072cc5a58e61263b434c722725f21031cd06e7c552cfaa06db5de8a320dbc
Used in:	authorizeOperator(address,uint256,bytes), revokeOperator(address,bool,bytes), increaseAllowance(address,uint256,bytes), decreaseAllowance(address,uint256,bytes)
Solidity constant:	_TYPEID_LSP7_TOKENOPERATOR
JavaScript constant:	LSP1_TYPE_IDS.LSP7Tokens_OperatorNotification

---

LSP8 - Identifiable Digital Asset

LSP8Tokens_SenderNotification

Name	"LSP8Tokens_SenderNotification"
TypeID	0xb23eae7e6d1564b295b4c3e3be402d9a2f0776c57bdf365903496f6fa481ab00
Used in:	_burn(bytes32,bytes), _transfer(address,address,bytes32,bool,bytes)
Solidity constant:	_TYPEID_LSP8_TOKENSSENDER
JavaScript constant:	LSP1_TYPE_IDS.LSP8Tokens_SenderNotification

LSP8Tokens_RecipientNotification

Name	"LSP8Tokens_RecipientNotification"
TypeID	0x0b084a55ebf70fd3c06fd755269dac2212c4d3f0f4d09079780bfa50c1b2984d
Used in:	_mint(address,bytes32,bool,bytes), _transfer(address,address,bytes32,bool,bytes)
Solidity constant:	_TYPEID_LSP8_TOKENSRECIPIENT
JavaScript constant:	LSP1_TYPE_IDS.LSP8Tokens_RecipientNotification

LSP8Tokens_OperatorNotification

Name	"LSP8Tokens_OperatorNotification"
TypeID	0x468cd1581d7bc001c3b685513d2b929b55437be34700410383d58f3aa1ea0abc
Used in:	authorizeOperator(address,bytes32,bytes), revokeOperator(address,bytes32,bool,bytes)
Solidity constant:	_TYPEID_LSP8_TOKENOPERATOR
JavaScript constant:	LSP1_TYPE_IDS.LSP8Tokens_OperatorNotification

---

LSP9 - Vault

LSP9ValueReceived

Name	"LSP9ValueReceived"
TypeID	0x468cd1581d7bc001c3b685513d2b929b55437be34700410383d58f3aa1ea0abc
Used in:	constructor(address), receive(), fallback(bytes), execute(uint256,address,uint256,bytes), executeBatch(uint256[],address[],uint256[],bytes[])
Solidity constant:	_TYPEID_LSP9_VALUE_RECEIVED
JavaScript constant:	LSP1_TYPE_IDS.LSP9ValueReceived

LSP9OwnershipTransferStarted

Name	"LSP9OwnershipTransferStarted"
TypeID	0xaefd43f45fed1bcd8992f23c803b6f4ec45cf6b62b0d404d565f290a471e763f
Used in:	transferOwnership(address)
Solidity constant:	_TYPEID_LSP9_OwnershipTransferStarted
JavaScript constant:	LSP1_TYPE_IDS.LSP9OwnershipTransferStarted

LSP9OwnershipTransferred_SenderNotification

Name	"LSP9OwnershipTransferred_SenderNotification"
TypeID	0x0c622e58e6b7089ae35f1af1c86d997be92fcdd8c9509652022d41aa65169471
Used in:	acceptOwnership() renounceOwnership()
Solidity constant:	_TYPEID_LSP9_OwnershipTransferred_SenderNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP9OwnershipTransferred_SenderNotification

LSP9OwnershipTransferred_RecipientNotification

Name	"LSP9OwnershipTransferred_RecipientNotification"
TypeID	0x79855c97dbc259ce395421d933d7bc0699b0f1561f988f09a9e8633fd542fe5c
Used in:	acceptOwnership()
Solidity constant:	_TYPEID_LSP9_OwnershipTransferred_RecipientNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP9OwnershipTransferred_RecipientNotification

---

LSP14 - Ownable 2-Step

LSP14OwnershipTransferStarted

Name	"LSP14OwnershipTransferStarted"
TypeID	0xee9a7c0924f740a2ca33d59b7f0c2929821ea9837ce043ce91c1823e9c4e52c0
Used in:	transferOwnership(address)
Solidity constant:	_TYPEID_LSP14_OwnershipTransferStarted
JavaScript constant:	LSP1_TYPE_IDS.LSP14OwnershipTransferStarted

LSP14OwnershipTransferred_SenderNotification

Name	"LSP14OwnershipTransferred_SenderNotification"
TypeID	0xa124442e1cc7b52d8e2ede2787d43527dc1f3ae0de87f50dd03e27a71834f74c
Used in:	acceptOwnership() renounceOwnership()
Solidity constant:	_TYPEID_LSP14_OwnershipTransferred_SenderNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP14OwnershipTransferred_SenderNotification

LSP14OwnershipTransferred_RecipientNotification

Name	"LSP14OwnershipTransferred_RecipientNotification"
TypeID	0xe32c7debcb817925ba4883fdbfc52797187f28f73f860641dab1a68d9b32902c
Used in:	acceptOwnership()
Solidity constant:	_TYPEID_LSP14_OwnershipTransferred_RecipientNotification
JavaScript constant:	LSP1_TYPE_IDS.LSP14OwnershipTransferred_RecipientNotification

---

LSP26 - Follower System

LSP26FollowerSystem_FollowNotification

Name	"LSP26FollowerSystem_FollowNotification"
TypeID	0x71e02f9f05bcd5816ec4f3134aa2e5a916669537ec6c77fe66ea595fabc2d51a
Used in:	follow(address) — notifies the followed address that they have a new follower
Solidity constant:	_TYPEID_LSP26_FOLLOW
JavaScript constant:	LSP1_TYPE_IDS.LSP26FollowerSystem_FollowNotification

LSP26FollowerSystem_UnfollowNotification

Name	"LSP26FollowerSystem_UnfollowNotification"
TypeID	0x9d3c0b4012b69658977b099bdaa51eff0f0460f421fba96d15669506c00d1c4f
Used in:	unfollow(address) — notifies the unfollowed address that they lost a follower
Solidity constant:	_TYPEID_LSP26_UNFOLLOW
JavaScript constant:	LSP1_TYPE_IDS.LSP26FollowerSystem_UnfollowNotification