poa-interchain-node-contracts

These smart contracts are designed with intention to be used as part of the interchain nodes where money is transferred between two different blockchains (Main Chain and Side Chain).

There are a couple of assumption that were made in designing these smart contracts:

• The Fees on Main Chain will be significantly higher than on the side chain.
• Transaction speed on Main Chain is lower than side chain.
• If user can send Funds from a non-smart contract account to our smart contract on main chain, he/she will also be able to receive funds at that account in the side chain and vice-versa.
• Upgrade is imminent (We'll most likely need to upgrade at some point in the future).

Features

• Minimize Gas Usage
  Unlike traditional multi signature wallet smart contracts where each authority submits a transaction on chain to approve a transaction, this version assume that the transactions are signed offline and is submitted to main chain once. This not only help reduce the network traffic on the main chain, but also minimize the gas used by a factor of 1/3 when 10 signatures are required. This is expected to reduce further if full versions were used (Tested with happy flow version of both traditional and bitcoin style multi-sig wallet).

• Escape Hatch
  To deal with the case of hacks and other un-foreseen events that would allow user to drain funds from the contract, contract Frozen and Unfrozen functions are implemented.

• Upgradability
  The flow to upgrade would be as follow:

  • Owners call Freeze function to freeze permanently.
  • Deploy new version of the smart contract, setting appropriate version number and point to current contract address in previousVersionAddress.

• Support ERC20 Token

• Prevent Replay Attack

• Audibility

Getting Started

Prerequisites

• Node v5+

Install

git clone git@github.com:WeTrustPlatform/poa-interchain-node-contracts.git
cd poa-interchain-node-contracts
npm install

Test

Truffle is used as the test framework.

Run contract test:

npm test

Code style

npm run lint

Built With

• Solidity

Versioning

We use SemVer for versioning. For the versions available, see the tags on this repository.

Security

All contracts are WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgments

This version of Multi Signature Smart Contract is inspired by Gnosis MultiSig Wallet and inspired by bitcoin's P2SH protocol which is primarily used for creation of multi signature wallets, see here for more Info.

License

GPL-3.0 © WeTrustPlatform