基于区块链的毕业设计Progress – 进展

本文提供基于区块链的毕业设计国外最新区块链项目源码下载,包括solidity,eth,fabric等blockchain区块链,基于区块链的毕业设计Progress – 进展 是一篇很好的国外资料

ETHIndia2020DAppJedi ( Submission for ETH India 2020 DApp Jedi Hackathon )

Progress

We have demonstrated an Onchain Randomness of VDF for Dynamic Oracles and DAOs. This is the first implementation of RANDAO + VDF as per the Justin Drake model. We have also implemented an Atomic Token Swap between two Tokens – Fusion Token and Fractal Token. Fusion Ledger is thus a combination of Fusion Oracles and Fractal DAOs.Lack of a secure and scalable end to end integrated frameworks in smart contract-based blockchain protocols and platforms to integrate Cryptographically Verified Ranomness powered Oracles and DAOs into Tokens, Token Swaps, and DApps. Thus our FusionLedger framework is designed for On-chain and Off-chain interaction between real work data and digital world institutions. FusionOracles will represent the real-world data and FractalDAOs represent the digital world institutions like Banks, Treasuries, Markets, etc.Our approach is a workflow from Fusion Oracles to Fractal DAOs. We are tokenizing Fusion Oracles. We are also tokenizing Fractal DAO. We have tokenized Oracles by applying VDF. Thus they are technically random oracles in the cryptographic sense. We have also tokenized DAOs by applying VDF. We can term them Random DAOs. Now we would like to demonstrate how an Auction App powered by Portis SDK can benefit from this Fractal DAO and Fusion Oracles. We also would like to convert the Fusion Rollup Contract to a Matic Child Chain demonstrating the combined scalability architecture of ZK RollUps and Matic Network.

Challenges

We initially faced issues in selecting a uniform solidity compiler version as VFDs were written in 0.5 incremental versions and Open Zeppelin contracts were written in 0.6 incremental versions. Hence we had to migrate some of the contracts from VDF. Likewise, we also faced some issues in implementing Token Swap as the Atomic Swap framework was in a legacy version of Solidity. We also faced some issues in creating an oracle contract from time-series data. We have overcome the solidity version issues by migration techniques. We have finally used the Truffle framework customized for the solidity version 0.6.2 to compile and deploy all the contracts.

Overview

This is a reference implementation of the FusionLedger framework for On-chain and Off-chain interaction between real work data and digital world institutions. FusionOracles will represent the real world data and FractalDAOs represent the digital world institutions like Banks, Treasuries, Markets, etc.

Components

  • Fusion Oracles
  • Fractal DAOs
  • Fusion Forward Manager
  • Verifiable Delay Functions
  • Auction Apps

Workflow

  • Our Workflow is Fusion to Fractal

  • Hence Fusion Oracles to Fractal DAO

  • We are tokenising Fusion Oracles

  • We are tokenising Fractal DAO

  • We will tokenise Oracles by applying VDF

  • We will tokenise DAOs by applyingb VDF

Tokenisation

Applying Fractal Token to Fractal DAO

  • Importing Fractal Token Contract
  • Importing Fractal DAO Contract
  • Creating a simple contract to tokenise DAO by tokenising the campaigns and customers in the DAO
  • Tokening Fractal DAO at a time, for a activities and aspirations using Fractal Token

Applying Fusion Token to Fusion Oracle

  • Importing Fusion Oracle contract
  • Importing Fusion Token contract
  • Tokening Fusion Oracle at a time, for a quantity and quality using Fusion Token

Token Swap

  • FiniteSwap Execution with Fusion Manager after tokenising FractalDAO and FusionOracles

Scalability

  • Applying ZK RollUps for FusionOracles and FractalDAOs and FusionManager

Inteface Design

  • Auction App Listing Oracles
  • Auction App choosing an Oracle at a time at random
  • Auction App Listing DAOs
  • Auciton App choosing a DAO at a time based at random
  • Hence we need two listing screens and pages
  • Then we need an auction bid page
  • In the auction big page, one DAO should be able to bid for a list of Oracles selected in a random manner

Dependencies

  • Node.js
  • Truffle.js
  • React.js
  • Web3.js
  • NPM
  • node-fetch

References

  • ETHEREUM Plasma
  • RANDAO
  • STARKWARE Veedo VDF
  • MATIC NETWORK ChildChain
  • PORTIS SHAPESHIFT

Fusion Scrpts

Fusion Scripts consists of 2 core functions:

main:

This function fetches data from the time series api, which in this example is the source of transportation time seres data on the Government Data web portal. This is then set as the input for the setNumber function in the deployed sample smart contract. This input is set as the object for the second function (sendTx).

sendTx:

This function sets all the parameters for the transaction, signs the transaction and sends the transaction.

Implementation

  • Clone the repository.
  • Set up an ethereum wallet with Matic Network (metamask is easiest).
  • Deploy “sample.sol” (remix is easiest).

ETHIndia2020DAppJedi(提交给ETH India 2020 DApp绝地黑客大赛)

进展

我们已经证明了动态神谕和dao的VDF的随机性。这是根据Justin Drake模型首次实现RANDAO+VDF。我们还实现了两个令牌之间的原子令牌交换——融合令牌和分形令牌。因此,融合账本是融合预言和分形的结合道斯。缺乏基于智能合约的区块链blockchain协议和平台中的安全和可扩展的端到端集成框架,将加密验证的Ranomness支持的Oracles和DAO集成到代币、代币互换和DAPP中。因此,我们的FusionLedger框架是为实际工作数据和数字世界机构之间的链上和链下交互而设计的。FusionOracles将代表真实世界的数据,分形代表数字世界的机构,如银行、国债、市场,等等,我们的该方法是一个从融合预言器到分形dao的工作流。我们正在标记融合神谕。我们也在标记分形刀。我们通过应用VDF将神谕标记化。因此,从密码学意义上讲,它们是随机预言。我们还通过应用VDF将dao标记化。我们可以称之为随机dao。现在,我们将演示由portissdk支持的拍卖应用程序如何从分形DAO和Fusion Oracles中获益。我们还想将Fusion Rollup契约转换为一个Matic子链,演示ZK RollUps和Matic Network的组合可伸缩性架构。

挑战

我们最初在选择统一的solidity编译器版本时遇到了一些问题,因为vfd是用0.5增量版本编写的,而开放式齐柏林合同是用0.6增量版本编写的。因此,我们不得不从VDF转移一些合同。同样,我们在实现令牌交换时也面临一些问题,因为原子交换框架是Solidity的遗留版本。在从时间序列数据创建oracle合同时,我们也遇到了一些问题。我们通过迁移技术克服了稳定版本的问题。我们最终使用了为solidity版本0.6.2定制的Truffle框架来编译和部署所有的契约。

概述参考文献

Fusion Scrpts

main:

sendTx:

实现

  • Fusion Oracles
  • 分形DAO
  • Fusion Forward Manager
  • 可验证的延迟函数
  • 拍卖应用程序
  • 我们的工作流程是Fusion to Fractal
  • 因此将Fusion Oracles转换为分形DAO
  • 我们是标记化融合Oracles
  • 我们正在标记分形DAO
  • 我们将通过应用VDF来标记Oracles
  • 我们将通过应用b VDF
  • 导入分形代币契约来标记DAO将DAO中的活动和客户标记化
  • 一次标记分形DAO,对于使用分形令牌导入Fusion Oracle合同的活动和愿望,
  • 导入Fusion Token合同
  • 一次标记Fusion Oracle,对于使用Fusion Token的数量和质量,
  • 在标记FractalDAO和FusionOracles后使用Fusion Manager完成Swap执行
  • 对FusionRACles和FractalDAOs以及FusionManager应用ZK汇总
  • 拍卖应用程序随机选择一个Oracle
  • 拍卖应用程序列出DAOs
  • 拍卖应用程序随机选择一个DAO,因此我们需要两个登录屏幕和页面
  • 然后在拍卖大页面中需要一个拍卖出价页面
  • ,一个DAO应该能够对随机选择的oracle列表进行投标节点.js
  • 松露.js
  • React.js公司
  • Web3.js
  • NPM
  • 节点获取
  • 以太坊ethPlasma
  • RANDAO
  • STARKWARE Veedo VDF
  • MATIC网络子链
  • PORTIS SHAPESHIFT
  • 克隆存储库。
  • 使用Matic网络设置以太坊eth钱包(metamask最简单)。
  • 部署”样品.sol“(混音是最简单的)。在
  • 这是FusionLedger框架的参考实现,用于实际工作数据和数字世界机构之间的链上和链下交互。FusionOracles将代表真实世界的数据,分形代表数字世界的机构,如银行、国债、市场,等等。

    Fusion Scrpts

    • Fusion Oracles
    • 分形DAO
    • Fusion Forward Manager
    • 可验证的延迟函数
    • 拍卖应用程序

    main:

    • 我们的工作流程是Fusion to Fractal
    • 因此将Fusion Oracles转换为分形DAO
    • 我们是标记化融合Oracles
    • 我们正在标记分形DAO
    • 我们将通过应用VDF来标记Oracles
    • 我们将通过应用b VDF

    sendTx:

    实现

    • 导入分形代币契约来标记DAO将DAO中的活动和客户标记化
    • 一次标记分形DAO,对于使用分形令牌导入Fusion Oracle合同的活动和愿望,
    • 导入Fusion Token合同
    • 一次标记Fusion Oracle,对于使用Fusion Token的数量和质量,

    Applying Fusion Token to Fusion Oracle

    • 在标记FractalDAO和FusionOracles后使用Fusion Manager完成Swap执行
    • 对FusionRACles和FractalDAOs以及FusionManager应用ZK汇总
    • 拍卖应用程序随机选择一个Oracle

    Token Swap

    • 拍卖应用程序列出DAOs

    Scalability

    • 拍卖应用程序随机选择一个DAO,因此我们需要两个登录屏幕和页面

    Inteface Design

    • 然后在拍卖大页面中需要一个拍卖出价页面
    • ,一个DAO应该能够对随机选择的oracle列表进行投标节点.js
    • 松露.js
    • React.js公司
    • Web3.js
    • NPM
    • 节点获取

    Dependencies

    • 以太坊ethPlasma
    • RANDAO
    • STARKWARE Veedo VDF
    • MATIC网络子链
    • PORTIS SHAPESHIFT
    • 克隆存储库。

    References

    • 使用Matic网络设置以太坊eth钱包(metamask最简单)。
    • 部署”样品.sol“(混音是最简单的)。在
    • STARKWARE Veedo VDF
    • MATIC NETWORK ChildChain
    • PORTIS SHAPESHIFT

    Fusion Scrpts

    此函数从时间序列api获取数据,在本例中,时间序列api是政府数据web门户上传输时间序列数据的来源。然后将其设置为已部署示例智能合约中setNumber函数的输入。此输入被设置为第二个函数(sendTx)的对象。

    main:

    此函数设置事务的所有参数,签署事务并发送事务。

    sendTx:

    This function sets all the parameters for the transaction, signs the transaction and sends the transaction.

    Implementation

    • Clone the repository.
    • Set up an ethereum wallet with Matic Network (metamask is easiest).
    • Deploy “sample.sol” (remix is easiest).

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