LFX Mentorship
Hyperledger - Automated Fault-Tolerant HTLC for Cross-Chain Atomic Asset Exchange
Hyperledger1 Program Years
Hyperledger - Automated Fault-Tolerant HTLC for Cross-Chain Atomic Asset Exchange
About the Organization
The Hash Time Locked Contract (HTLC) is a well-known pattern for dis-intermediated asset swaps, i.e., as a mechanism to exchange assets between two parties in two different blockchain networks in an atomic manner without a trusted mediator (or trusted third party). HTLC support has been implemented in the Hyperledger Weaver Labs project, with mechanisms to lock, claim, and unlock assets supported in both the contract and higher application layers. At present, the protocol requires several manual steps by the application users carrying out the exchange or agents acting on their behalf. We would like to automate this process as much as possible by augmenting the relay module in Weaver to communicate events and trigger transactions in foreign networks; this requires both research and software development. Further, HTLC is known to have flaws that could violate system integrity properties, because it relies on parties to execute certain actions by a certain timeout or forever lose the opportunity to carry out those actions; this makes the basic protocol intolerant to system crashes. Research is needed to (provably) determine the best way to make the HTLC protocol fault tolerant, using the features of the blockchain networks maintaining the assets and the Weaver relays mediating the exchange. Augmenting the existing HTLC mechanism within Weaver will provide practical validation of this research.
Primary Technologies & Languages
rustnode.jsgodistributed systemsnetwork protocolsnetwork programmingblockchaindlt
Technical Topics & Focus Areas
rustnode.jsgodistributed systemsnetwork protocolsnetwork programmingblockchaindlt
Participation Years
Completed Projects Distribution
Annual Completed Projects History
Hyperledger - Automated Fault-Tolerant HTLC for Cross-Chain Atomic Asset ExchangeHover over bars to view completed counts
4
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1
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2022
Projects1
Years Active1
Stackrust
TierTier 1
Past Projects
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Hyperledger - Automated Fault-Tolerant HTLC for Cross-Chain Atomic Asset Exchange Mentorship Project
IntermediateThe Hash Time Locked Contract (HTLC) is a well-known pattern for dis-intermediated asset swaps, i.e., as a mechanism to exchange assets between two parties in two different blockchain networks in an atomic manner without a trusted mediator (or trusted third party). HTLC support has been implemented in the Hyperledger Weaver Labs project, with mechanisms to lock, claim, and unlock assets supported in both the contract and higher application layers. At present, the protocol requires several manual steps by the application users carrying out the exchange or agents acting on their behalf. We would like to automate this process as much as possible by augmenting the relay module in Weaver to communicate events and trigger transactions in foreign networks; this requires both research and software development. Further, HTLC is known to have flaws that could violate system integrity properties, because it relies on parties to execute certain actions by a certain timeout or forever lose the opportunity to carry out those actions; this makes the basic protocol intolerant to system crashes. Research is needed to (provably) determine the best way to make the HTLC protocol fault tolerant, using the features of the blockchain networks maintaining the assets and the Weaver relays mediating the exchange. Augmenting the existing HTLC mechanism within Weaver will provide practical validation of this research.