Celo Tutorials 101

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Add Tasks: Users can input tasks and add them to their list. Remove Tasks: Each task can be deleted from the list. Mark as Complete: Users can toggle tasks to indicate completion. Technologies Used: React: For building the user interface. CSS: For styling the application. Git and GitHub: For version control and project collaboration.

created a smart contract for events

created a celo tutorial on payment system

# Reign Protocol  Reign Protocol operates as a decentralized credit infrastructure provider, facilitating connections between digital asset (crypto) investors and investment opportunities tied to small and medium-sized business (SMB) economic activities. Our platform demonstrates the practical application of a Credit Fund functioning as a borrower, which in turn aggregates and lends to small businesses. We strongly believe that embracing decentralized finance can effectively address the financial inclusion challenge by offering the following advantages: ### For Borrowers: - Access to global digital asset liquidity, providing a sustainable and cost-effective solution for borrowers in emerging markets. - Utilization of Blockchain-based on-chain borrowing, ensuring speed, security, and the creation of an immutable credit history that can attract significant capital inflows. ### For Investors: - Empowerment of any digital asset holder to participate as a lender, supporting real-world economic activities. - Provision of stable and sustainable yields ranging from 10% to 25% We aim to establish a progressively decentralized community (DAO) comprising underwriters, auditors, service providers, asset originators, developers, and investors. Our incentive mechanism is designed to promote positive behavior and address centralized decision-making across the network. Our plan involves building the protocol as an infrastructure toolkit to fulfill three main purposes: 1. Simplifying crypto and DeFi complexities for users. 2. Providing comprehensive on and off-chain reputation and identity management, along with regulatory compliance. 3. Enabling robust security and privacy features, such as tools for on and off-chain credit scoring, reputation management, whitelisting, compliance checks, decentralized data storage, dashboards, etc., all integrated with encryption and security measures. ## SMART CONTRACTS The contracts are deployed on Celo Alfajores in the addresses listed below | Contract Name | Contract Address | |----------------------------|----------------------------------------------------| | Accounting.sol | 0xbE96Edef6aFFA452ff9181d36065aa1D3afE8694 | | AuthorizeUser.sol | 0x045c3c801B6a21866130B70971098019cdB95158 | | BaseUpgradeablePausable | 0x5C821B20139a00098a2CDEB8038EB0F0B0cF0bc1 | | Borrower | 0x5bBa6b8bab259A2122534621ADA01f88370342Bf | | CollateralToken | 0x46220FE6D868aBC021bC84364a9A8C274E8A7e01 | | ConfigHelper | 0x10213f1a78eb3F717F0DeCf8750424803C51Feb1 | | ConfigOptions | 0xC0f908ed6D3FF1eA67b6Da34Adc84ea6f3887Fb0 | | Constants | 0x86D2e67643064a913AEF9B26958c3C2F276828F1 | | DSMath | 0x82bE44F1135F3D3347AA44245fF15df831AC4225 | | IdentityToken | 0xa6F1f5614AdbC2Cc6148243A1F17E413A069A57D | | Investor | 0x14CBbC9A3F3E1b1257695Bc5c6817392a8B4aF77 | | MultiSign | 0x0B4bc9d94cb98c2c118160b781a6ccd552c4f511 | | OpportunityManager | 0xaE772f42A332cB719a85d6a4470cab76Bb6436D3 | | OpportunityPool | 0x37318A53e1ECed143937a10CA811F245DC6AF81b | | PauserPausable | 0x7DF4C6b844c2F55CBe7DE809cb2a1BB3686148A2 | | ReignCoin | 0xa44eF65d18257b6f89DE542Aa917a086D4e8c2C5 | | ReignConfig | 0x43436481117cEdc98f0806F49AdA8D719F1cf6F8 | | ReignKeeper | 0x9e13b240170036d9dE3D2d190B17249afB790F1F | | ReignTreasury | 0x0B98CbD084acDa3C338e0DD538Bf07711C79598E | | SeniorPool | 0x951f9cDe5A74AE949B6655Ac751027e747Bc16E8 | | ReignStaking | 0xc7572cE0A215C168fEC2555709fe4D29af1D201d | | TestUSDCToken | 0xB68F542Ef0b3cff84c110461f9ACf5Ea6AA2e09A | ## HOW IT WORKS On the protocol, the borrower creates a loan request providing the needed details and the needed collateral document and they submit these details which are captured and stored on-chain. This request is now visible on the dashboard. ##### Borrower submits borrow request  *Borrower Dashboard*  *Borrower creates a borrow request*  *Borrower submits a collateral document*  *Borrower submits loan application* ##### Underwriter reviews the application and makes decision The request then goes to the underwriter dashboard and they can decide to approve based on the information provided. This will then be available to the investors to invest in.  *Underwriter dashboard showing the new loan request received*  *Underwriter can approve or reject based on the application and the docs submitted*  *Past underwriter decisions* ##### Investors So, when a junior pool investor invests in part of that opportunity, it will be partly funded up to the amount provided by the investor. Senior pool investors invest in a blanket pool, a general pool which aggregates the funds and allocate them to the various opportunities.  *Junior Investor investing*  *Investor pools*  *Senior Pool* ##### Withdrawal & Repayment When an opportunity becomes fully funded, it becomes available for withdrawal by the borrower and the loan payment terms are shown on the dashboard. During repayment, the borrower pays back the loan premium, the loan is updated with the next due amount and the net due date.  *Loan request succesfull, funds available for withdrawal*  *Making Repayment*  *Repayment*

I have created a tutorial for art marketplace explain every concept of creating an art marketplace.

This article provides a comprehensive tutorial on building decentralized exchanges (DEXs) on CELO blockchain.

Here is the submission for the cattle farm record smart contract development tutorial.

This tutorial provides a step-by-step guide for developing a decentralized smart contract for a pet adoption marketplace and deploying it onto the Celo blockchain.

I developed a tutorial about a blockchain-based system to enhance transparency and efficiency in construction project management.

This tutorial will teach you how to build a rental service smart contract on the Celo blockchain network. The smart contract will allow users carry out transactions using celo token. A rental service is a business that provides customers or users the ability to temporarily use a good or service for a fee. The rental service can apply to a wide range of products, including vehicles, equipment, appliances, and more. Rental services enable individuals and businesses a flexible way to access and use various items without incurring the full cost of ownership. Users do not have to bother about maintenance, storage, and repairs. It allows users pay a token in exchange for a temporary ownership of a product. Examples of rental services companies include Zipcar, Airbnb, Enterprise Rent-A-Car, among many others.

This tutorial will walk you through the process of using Echidna to test the security of a smart contract deployed on the Celo network.

A decentralized, censorship-resistant and image-sharing platform where users can earn in celo cryptocurrency by posting images in the form of art, photographs or even memes.

This tutorial guides you through the creation of a simple CUSD withdrawal application for the Minipay app on the Celo blockchain. By following this step-by-step guide, you will gain the necessary skills to develop an application capable of withdrawing CUSD tokens from a Minipay wallet to a CUSD-compatible wallet address.

A Comprehensive Guide to Building a Decentralized Social Media Platform on CELO Alfajores.

This tutorial serves as a comprehensive guide for developers interested in building a decentralized anonymous incident reporting application using the Celo blockchain. The project's purpose is to showcase the potential of blockchain technology in providing a trustworthy, confidential, and transparent platform for reporting incidents.

This tutorial delves into the world of Celo Dollar (cUSD) which is a stablecoin built on the Celo blockchain. It teaches readers to build a stable coin and deploy it on the celo blockchain.

Building a Decentralized Lottery on the CELO Blockchain: From Smart Contract Development to Deployment

# This tutorial guides you through the process of building a decentralized crowdfunding platform on the Celo blockchain. After completing this tutorial, you will learn: - How to set up a project with Celo’s ContractKit library. - The fundamentals of Celo’s crowdfunding system and its importance. - How to fetch real-time information from the blockchain. - How to ensure reliability and security in your platform. - How to define, query, and fulfill data requests in smart contracts. - How to test and validate your platform. - How to handle and verify data from oracles.

This tutorial provides a step-by-step method for creating and implementing a Decentralised Autonomous Organisation (DAO) on the Celo blockchain using hardhat deploy. The provided Solidity smart contract utilizes OpenZeppelin components for improved functionality and security.

Car Rent DApp! This decentralized application (DApp) is designed for car rental ventures, providing a streamlined process for users to hire cars. Car owners can set their hire rates, and the admin plays a crucial role in approving suitable cars for hire, ensuring the company's image is protected. Features User-Friendly Interface Car Listing: Car owners can list their vehicles for hire as well end user Deployed contract wallet address which is where the admin approves and rejects cars that are not suitable for the company Transaction History Users can view their previous transactions with address they have transact with Real-time Availability-Instant updates on car availability, users can check if a particular car is currently on hire Payment Handling: Secure payment processing, users can only hire a car if the previous user has completed the payment. hosted: https://carrent-dapp.vercel.app/ demo: https://youtu.be/vVF20V4rN2Y

Introducing the Decentralized Voting System: A Celo blockchain-powered solution for transparent and secure voting. The smart contract (Voting.sol) manages elections, while the user-friendly web interface enables easy participation

In this article, I provided a structured guide on deploying, debugging, and monitoring a Solidity smart contract on the Celo blockchain.

We explore how to user web3.php package for seamless communication with the Celo blockchain. By the tutorial's conclusion, you will possess the capability to connect to the Celo network, access blockchain data, and effortlessly send transactions using web3.php.

In this tutorial, We'll go over creating and testing a Solidity contract on celo blockchain for a gambling game at a casino that makes use of random numbers.

This is a basic tutorial that explains how to get started with Celo Blockchain using the Rust Programming language. It covers aspects of deploy smart contract to CELO Blockchain using remix, read from smart contract abi and query/update data from blockchain using ether, web3 and tokio crate package in rust.

In this tutorial, we will explore how to leverage Celo blockchain oracles to integrate external data into smart contracts and DApps. The ability to access off-chain data is crucial for real-world use cases, and decentralized oracles provide a reliable and secure way to fetch and verify this data within the Celo ecosystem. we’ll look at how to use Celo’s stable oracle system to easily add data from outside your smart contracts. By following this illustrated tutorial, you’ll give your dApps the ability to gain secure access to real-world data and make sure they’re as reliable as possible.

This is a tutorial to guide you through Developing a crowdfunding smart contract with a blog feature on Celo Alfajores using Eth-Brownie and some guide on Generative Art i.e. generating images using an art engine.

In this tutorial, you will build a rental service smart contract on the Celo blockchain network. This will enable users to spend Celo on transactions. A rental service is a business that provides customers or users the ability to temporarily use a good or service for a fee. The rental service can apply to a wide range of products, including vehicles, equipment, appliances, and more. Rental services have become popular because they offer individuals and businesses a flexible way to access and use various items without incurring the full cost of ownership. This flexibility allows customers or users to use a product when they need it, without the burdensome responsibility of maintenance, storage, and repairs. Overall, rental services have proven to be a helpful solution for many people seeking to use temporary goods or services. Examples of rental services companies include Airbnb, Enterprise Rent-A-Car, Zipcar among many others.

In this tutorial, we will walk through the process of building, testing, and deploying an E-commercesmart contract using Hardhat as the development framework and Celo Alfajores Testnet as the blockchain network. We will use the provided smart contract called "Mundo" for the E-commerce functionality.