Module @liskhq/lisk-framework-chain-connector-plugin - v0.2.0


@liskhq/lisk-framework-chain-connector-plugin is a plugin for creating and sending Cross-Chain-Update (CCU) Transactions.

Cross-chain update transactions are the carriers of the information transmitted between chains. By posting a cross-chain update, the receiving chain gets the information required about the advancement of the sending chain. The transaction can also include cross-chain messages and thus serves as an envelope for messages from one chain to another.


$ npm install --save @liskhq/lisk-framework-chain-connector-plugin

Config Options

receivingChainID: string,
receivingChainWsURL?: string,
receivingChainIPCPath?: string,
ccuFrequency: number,
encryptedPrivateKey: string,
ccuFee: string,
isSaveCCU: boolean,
maxCCUSize: number,
registrationHeight: number,
ccuSaveLimit: number


Param Required? Description
receivingChainID Y Chain ID of the receiving chain
receivingChainWsURL N The WS url of a receiving node
receivingChainIPCPath N The IPC path of a receiving node
ccuFrequency Y Number of blocks after which a CCU should be created
encryptedPrivateKey Y Encrypted privateKey of the relayer
ccuFee Y Fee to be paid for each CCU transaction
isSaveCCU Y Flag for the user to either save or send a CCU on creation. Send is by default
maxCCUSize Y Maximum size of CCU to be allowed
registrationHeight Y Height at the time of registration on the receiving chain
ccuSaveLimit Y Number of CCUs to save


Start your Lisk SDK with --enable-chain-connector-plugin flag, i.e.

    $ ./bin/run start --enable-chain-connector-plugin


Setting up a relayer node: Details SDK Doc for setting up node with Chain Connector Plugin.

LIP-53 # CCU Properties: Explaination of CCU Properties from LIP-53.

Interoperability Example: Example of Interoperability with 2 sidechains and 1 mainchain, Chain Connector Plugin enabled.


Copyright 2016-2023 Lisk Foundation

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.



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