Skip to content

datachainlab/cross

master
Switch branches/tags
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
 
 
 
 
 
 
x
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Cross Framework

Cross Framework

Cross is a framework that enables distributed transactions over multiple blockchains. It is implemented as Cosmos module.

Cross provides several key features:

  • Cross-chain transaction support - supports Atomic Commit Protocol beteen multiple blockchains.
  • General application support - provides a framework to enable the support of "general" application as smart contract ("general" application means Account model like Ethereum, not UTXO model). Using this framework, smart contract developers are not forced to implement Atomic Commit and locking protocol at each contract development.
  • Use IBC as messaging layer - realize trustless communications between multiple chains.

Documents

Please see here.

Related Projects

Library

Demo

Motivation

It is difficult to atomically execute general smart contract on multiple networks. One such example is Train-And-Hotel problem. If we can convert Train and Hotel reservation rights into NFT that can be moved to any chain using Two-way peg method such as ics-020, it may be possible to solve this problem simply by doing atomicswap on a single chain. However, if each Token's metadata (e.g. a whitelist of owner) depends on other states of its origin chain and common state is referenced by other contract states, it is difficult to move between chains.

To solve such problem, we need to be able to execute All or Nothing reservation contracts that exist in two different chains, rather than pegging to single blockchain. This is similar to Atomic commit protocol for distributed systems. To achieve this, each contract's state machine needs to lock the state required for "commit" at "prepare" phase. But it is not safe to enforce these requirements on each contract developers. Therefore, we decided to implement Atomic commit protocol in compliance with ics-004 and create a datastore that transparently meets the required locking protocol.

Maintainers

Contact

Please contact us here.

About

A framework empowers the development of smart contracts that support cross-chain transactions.

Topics

Resources

License

Stars

Watchers

Forks

Packages

No packages published