Sberbank Hackathon

goal: create a hyperledger chaincode contract where users can rent items they own to other users

completed: created a smart contract that allows users to rent their property to other users - see /contracts/rental.sol

completed: created Solidity to Go bindings for rental.sol

YouTube video Demo of smart contract:

https://youtu.be/e4iqZlX2rxc

Rental Smart Contract live on Rinkeby:

https://rinkeby.etherscan.io/address/0xa22eecf77ba8d3d47b24612d2d1f87b4c61e3050#writeContract

using geth abigen tool:

Create Solidity Go Bindings

abigen --sol rental.sol --pkg main --out ../goBindings/rental.go

Why Sberbank should look into using a permissioned blockchain that allows developers to use Solidity

Potential Risk Detection System of Hyperledger Fabric Smart Contract based on Static Analysis

https://easychair.org/publications/preprint_open/7c6R

"Due to the lack of mature development specifications for smart contracts using general-purpose programming language, there are often potential risks in the smart contracts related to the characteristics of Hyperledger Fabric. It will bring many inconveniences and potential safety hazards to users after the smart contracts are deployed."

Hyperledger Fabric: A Distributed Operating System for Permissioned Blockchains

https://arxiv.org/pdf/1801.10228.pdf

"Unfortunately, generic languages pose many problems for ensuring deterministic execution. Even if the application developer does not introduce obviously non-deterministic operations, hidden implementation details can have the same devastating effect (e.g., a map iterator is not deterministic in Go)."