xheuz/blockchain-developer-bootcamp-final-project

Create a decentralized Trust or Will that enable to transfer your digital assets to your love ones once you are gone.

Onyx Trust

Introduction

This project aims to provide a dapp that works as a Trustee. Allowing to leave digital assets to somebody else as inheritance. read more

Certification as NFT Token

// Ethereum Address
0x13fd35d781550def2ffb86a7e1da4cc6782dee30;

Published

• Frontend deployed using Github Pages https://xheuz.github.io/blockchain-developer-bootcamp-final-project/
• Backend deployed on testnet

Other Files

• Common Attack Avoided
• Design Pattern Decisions

Project Walkthrough

https://www.loom.com/share/6adbb17fe51c41cf9ec9875fd5dadde2

https://www.loom.com/share/f89ee036dde54eafa5b738f51e160ee1

Structure

truffle unbox react is used as scaffold for this project:

root
|__ client                          //frontend of the project
    |__ public                      //client entry point
        |__ ...
    |__ src                         //client source code
        |__ ...
    |__ ...
    |__ package.json
|__ contracts                       //solidity contracts
    |__ ...
|__ migrations                      //migrations for solidity contracts
    |__ ...
|__ scripts                         //bash scripts for install dependencies, deploy and running test
    |__ ...
|__ test                            //tests for solidity contracts
    |__ ...
|__ avoiding_common_attacks.md      //describes protection implemented for common attacks
|__ deployed_address.txt            //ethereum contract addresses related to contract in testnet
|__ design_pattern_decisions.md     //describes which patterns were used
|__ .gitattributes
|__ .gitignore
|__ LICENSE
|__ package.json                    //npm dependencies
|__ README.md
|__ truffle-config.js               //truffle auto-generated config file

Installation

ENVIRONMENT

Check complete environment used here

• Check node version

> node --version
v16.1.0

PRE-REQUISITES

Installation of git is assumed.

1. Install truffle globally

npm install -g [email protected]

2. Install ganache-cli globally

npm install -g [email protected]

SETUP

1. Clone the project

git clone [email protected]:xheuz/blockchain-developer-bootcamp-final-project.git xheuz-project

2. Go to project directory

cd xheuz-project

3. Install dependencies

npm install # or yarn

4. Go to client directory and install dependencies

cd client

5. Install dependencies

npm install # or yarn

RUNNING TESTS

1. From the root of the project

truffle test

RUN PROJECT

1. Open Ganache UI and setup a local testnet on port 8545

2. From the root of the project, migrate from the cli.

truffle migrate --network develop

3. From the root of the project, go to client directory

cd client

4. Start client

npm run start # or yarn start

6. Stat using the project on http://localhost:3000/

blockchain-developer-bootcamp-final-project's Issues

Final project feedback

Hi @xheuz - This is Amma, one of the mentors on the bootcamp.

First of all, Congratulations! Your Final Project met the requirements set! You should be receiving formal notification soon, if you haven't done so already.

Here is my feedback. I hope you will find it useful.

Frontend comments:

• Very nice frontend.
• Very good functionality developed around toggling user accounts
• Automatically detects Metamask. Really neat UX here.
• Displays user's account but would be good to display the contract address and the testnet deployed to.
• Did not accept an input of less than 1 ETH or fractions of ETH......Should have text displayed on screen to notify user of this... Only noticed this was the issue by following the video exactly.

Testing comments:

• 19 passing tests
• Tests logically structured and cover a number of scenarios.
• Sensible use of describe() to group tests into sensible sets.
• Security measures for Access Control and Reentrancy implemented through established OpenZeppelin functions
• Modifier and require() correctly implemented for input validation
• Did not accept an amount of less than 1 ETH and only whole mulyoples of ETH. No text was visible on the screen to inform the user of this. Only worked out the issue by following the exact steps in the video.
• Neat way how you do not display trusts when you switch to another account. I also like the functionality implemented for cancelling trusts and disabling buttons according to the context.

Design and Security Comments

• Good concise code.
• Logically laid out code with ample comments to aid understandability.
• A very good README with an informative summary and a comprehensive set of instructions for installation and testing.
• Source code has a logical flow and is very well documented to NatSpec standards
• Security and interface measures are enforced with a suite of OpenZeppelin libraries including Ownable and ReentrancyGuard.This demonstrates encouraging knowledge of trusted libraries and functions.
• Modifiers and require() correctly used for validation.

Overall:

• Very good final project submission.
• A very intuitive and cosmetically pleasing interface. I loved it!
• This final project demonstrates the key skills have been mastered and substantial progress has been made in the Developer's Bootcamp.

You have a promising future and I would highly recommend you continue the journey!

I hope you enjoyed the course!