Decentralized Carbon Credits ERC20

Decentralized Carbon Credits in an ERC20 by Neetsec

Table of Contents

[[TOC]]

DECA Project Tree

|-- LICENSE
|-- README.md
|-- contracts
|-- build
|   |-- contracts
|       |-- Context.json
|       |-- DECA.json
|       |-- ERC20.json
|       |-- IERC20.json
|       |-- Migrations.json
|       |-- Ownable.json
|       `-- SafeMath.json
|   |-- DECA.sol
|   `-- Migrations.sol
|-- migrations
|   |-- 1_initial_migration.js
|   `-- 2_deploy_contracts.js
|-- package.json
|-- run-rpc.sh
|-- test
|   `-- DECA.js
|-- truffle.js
|-- .gitignore
|-- .gitlab-ci.yml

Requirements

• Node.js >= 12
• @openzeppelin/contracts = 2.4.0

Global install

• ganache-cli >= 6.9.1
• truffle = 5.1.3

Instalation

Download and install Node.js v12.x and npm.

• Node.js

Using Ubuntu

  $ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
  $ sudo apt-get install -y nodejs

Using Debian, as root

 $ curl -sL https://deb.nodesource.com/setup_12.x | bash - 
 $ apt-get install -y nodejs

Clone the repo

 $ git clone https://gitlab.com/deca-currency/dcc.git
 $ cd dcc

Install the dependencies

 $ npm install

Install ganache-cli

 $ sudo npm install -g ganache-cli

Install truffle

 $ sudo npm install -g truffle@5.1.3

Testing the Smart Contract:

• can see the test in pipelines or you can run it locally

Running locally

• open shell and execute "./run-rpc.sh" (remember change /usr/local/bin/ganache-cli to your path)

$ ./run-rpc.sh

• open second shell, and execute

$ truffle tests

Class Diagram ERC20 Token generated with sol2uml

Specification

Methods

Apart from the ERC20 standard methods that our token complies, we introduce some improvements, either for security or others that match DECA specific requirements.

Notes:

• The following specifications use syntax from Solidity (0.5.12)

owner

Returns the address of the current owner.

function owner() public view returns (address payable)

isOwner

Returns true if the caller is the current owner.

function isOwner() public view returns (bool)

transferOwnership

Can only be called by the current owner.

function transferOwnership(address payable newOwner) public onlyOwner 

updateCCDBAddress

Updates the official orbitDB address for carbon credits.

Can Only be updated by the current owner

function updateCCDBAddress(string memory newCCDBAddress) public onlyOwner 

transferAnyERC20Token

Owner can transfer out any accidentally sent ERC20 tokens

function transferAnyERC20Token(address payable tokenAddress, uint tokens) public onlyOwner returns (bool success)

getETH

Close down the ICO and claim the Ether.

function getETH() public onlyOwner { require(now >= endDate); owner().transfer(address(this).balance); }

DECA Promotion Dates

Now, based on the total Ethereums we got by the ICO (ETHTS) and considering our promodates which are:

PROMO	TIME (weeks)	DECA TOKENS PER ETH
preICO	1	300
Bonus1	2	275
Bonus2	3	250
ICO	5	225