Challenge
Showing 28 posts related with Challenge.
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Prove your Skills with Algorand Code Challenges
The Algorand Developer Portal has a new way to learn how to become an Algorand developer: Challenges.
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Creating a Point-of-Sale Application with the Algorand Blockchain
We show how to use Algorand’s blockchain to create an alternative payment solution for processing retail transactions. The solution demonstrates a point-of-sale application and a signing wallet.
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Example Permissioned Voting Stateful Smart Contract Application
This solution explains one way to build a permissioned voting application on the Algorand Blockchain.
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Using the Circle API to transfer funds between the Algorand blockchain and traditional bank accounts
This article describes the new TestNet dispenser’s design and implementation, enabling both USDC and Algos for testing.
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Case Study: OneStep Disaster Relief Platform Built on Algorand
This article describes the development of a comprehensive disaster relief platform powered by the Algorand blockchain.
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Flipping a Coin Using Hashing
Two Algorand accounts can bet on the result of a coin flip. Alice flips the coin and records the hashed result, Bob guesses and then Alice reveals the result. Example of commitment scheme.
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An Algorand Blackjack implementation with Beaker
Blackjack is the most played casino bank card game in the world. We show an implementation of a smart contract that runs single-player blackjack games against the bank in Beaker.
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Flash Loans on Algorand VM vs Ethereum VM
Have you ever wondered how Algorand feature set comes together to offer easy and convenient financial trades? Find out how it made flash loans easier!
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Using loop invariants for verification in Reach
Loops can be quite useful for writing Reach programs but verifying the outcome of loops can be challenging. In this tutorial, we will go through a tour of one of the most important features of Reach - automatic verification of loops using invariants.
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Building on Algorand: Developer Week 2020 Hackathon, Recap and Code
Over 600 attendees participated recently at the Algorand Sponsored Developer Week 2020 in San Francisco...
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Algorand Developer Bootcamp | Beginner
### Why should I be interested in learning about Algorand and participating in the Bootcamp? * Algorand has different SDK’s to help you with the building process in different languages and with extensive documentation. * The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. * The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. * This Beginner bootcamp will give you the foundations needed to take part in our Intermediate bootcamp. * Grow your web 3 developer skills on time to be able to participate in our exciting Global Virtual Hackathon at the end of the year. We’ll release more details shortly. **Each session will be 2 hours. Here’s what you can expect to cover over the 4 days:** * Session 1: Algorand Developer Onboarding with JavaScript SDK & AlgoKit Installation * Session 2: Building a dApp with Beaker and Deploying with dAppFlow * Session 3: Building & Debugging dApps with Beaker + PyTeal + PyTest * Session 4: Adding a TypeScript Frontend UI to the Auction dApp ### Why Algorand? When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: * It is a layer 1 network that can process 10,000 transactions per second. * The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. * Our blocks are processed in 3.3 seconds. * We are a carbon negative blockchain as we are committed to being environmentally friendly.
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Developer Intermediate Bootcamp
All the content will be in English and it is totally free, so if you are a developer and you ask yourself: Why should I be interested in learning about Algorand and participating in the Bootcamp? Algorand has different SDK's to help you with the building process in different languages and with extensive documentation. The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: It is a layer 1 network that can process more than 6,000 transactions per second and is expected to reach 10,000. The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. Our blocks are processed in 4 seconds. We are a carbon negative blockchain as we are committed to being environmentally friendly. What will you learn during the Bootcamp? Each session is 2 hours. 1.5 hours of content and 0.5 hours of Q&A. ### Session 1: State Storage - Build a Decentralized Autonomous Organization (DAO) contract - Use local and global state values - Refactor to make use of box storage state values - Implement proposal and voting mechanics ### Session 2: User-Defined Data Types - Explore various types: base, custom, tuple - Design a tuple for holding NFT traits within box storage - Update DAO contract to vote on those traits ### Session 3: Algorand Standards (ARC) for NFT, ABI and More - Introduce ARCs using SDKs - Explore various NFT standards (3, 4, 19, 69) - Update DAO contract using custom data type based on an NFT ARC - Test the contract by importing the ABI into dAppFlow - Introduce off-chain data storage using IPFS ### Session 4: Contract Composability - Implement NFT Factory - Enable the DAO to mint NFTs based on proposals/votes - Reuse auction from beginner to sell NFT - Distribute earnings to DAO members ### Who can participate? Everyone is welcome to build on Algorand! It is encouraged that you have successfully completed the Algorand Developer Bootcamp Beginner series, as that content provides the foundation for these intermediate sessions.
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Developer Beginner Bootcamp in Spanish - Build a dAPP in 4 days
This Bootcamp will consist of 4 sessions that will allow you to start your path in the development of decentralized applications using Algorand, taking advantage of its native technical characteristics. All the content will be in Spanish and it is totally free, so if you are a developer and you ask yourself: Why should you be interested in learning about Algorand and participating in the Bootcamp? Algorand has different SDKs to help you with the build process in different languages and with extensive documentation. The costs and speed for testing on Algorand are extremely low, allowing you to learn and test without friction. Companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp, you will be able to participate in solving challenges that will test your knowledge and serve as a cover letter so that you can apply for a job in the Algorand ecosystem. ### Session content All sessions are 7PM - 9PM EDT - Session 1 May 30 : Transacting with the typescript SDK and interacting with algokit - Session 2 June 1 : Creating contracts in Algorand with Python thanks to PyTEAL and Beaker - Session 3 June 6 : Building our dapp contract - Session 4 June 8: Building the frontend of our dapp ### Why Algorand? When you decide to start working on blockchain, it is essential that you know the characteristics of the protocol that you are going to use. Here we present the ones from Algorand: It is a layer 1 network that can process more than 6,000 transactions per second and is expected to reach 10,000. The cost per transaction is approximately 0.001 Algo == $0.0003 USD. Our blocks are processed in 3.7 seconds. We are a carbon neutral blockchain since we are committed to being friendly to the environment.
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Build-A-Bull Developer Bootcamp - Intermediate
### Why should I be interested in learning about Algorand and participating in the Bootcamp? * Algorand has AlgoKit to help you with the building process using languages you already know (TypesScript and Python) and with extensive documentation. * The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. * The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. * Grow your web 3 developer skills in time to be able to participate in our exciting [Global Virtual Hackathon](https://www.algorand.foundation/build-a-bull-hackathon) at the end of the year. ** Each session will be 2 hours. Here’s what you can expect to cover over the 4 days:** * Session 1: Refactoring the DAO dApp with robust features * Session 2: Testing & Debugging a full stack web3 dApp * Session 3: Working with algokit-utils & UI client generation * Session 4: Adding a web frontend UI to the DAO dApp ### Prerequisites * Completion of Beginner Bootcamp content * GitHub account ([sign up](https://github.com/signup)) * local workstation configured with: * NodeJS * Docker Desktop * Installation Guides ([macOS](https://www.youtube.com/watch?v=zsurtpCGmgE), [Windows](https://www.youtube.com/watch?v=22RvINnZsRo)) ### Why Algorand? When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: * It is a layer 1 network that can process 10,000 transactions per second. * The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. * Our blocks are processed in 3.3 seconds. * We are a carbon negative blockchain as we are committed to being environmentally friendly
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Algorand Developer Bootcamp | Intermediate
### Why should I be interested in learning about Algorand and participating in the Bootcamp? * Algorand has different SDK’s to help you with the building process in different languages and with extensive documentation. * The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. * The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. * Grow your web 3 developer skills on time to be able to participate in our exciting Global Virtual Hackathon at the end of the year. We’ll release more details shortly. **Each session will be 2 hours. Here’s what you can expect to cover over the 4 days:** * Session 1: State Storage * Session 2: User-Defined Data Types * Session 3: Algorand Standards (ARC) for NFT, ABI and More * Session 4: Contract Composability ### Why Algorand? When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: * It is a layer 1 network that can process 10,000 transactions per second. * The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. * Our blocks are processed in 3.3 seconds. * We are a carbon negative blockchain as we are committed to being environmentally friendly.
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Build-A-Bull Developer Bootcamp - Beginner
### Why should I be interested in learning about Algorand and participating in the Bootcamp? * Algorand has AlgoKit to help you with the building process using languages you already know (TypeScript and Python) and with extensive documentation. * The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. * The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. * This Beginner bootcamp will give you the foundations needed to take part in our Intermediate bootcamp. * Grow your web 3 developer skills in time to be able to participate in our exciting [Global Virtual Hackathon](https://www.algorand.foundation/build-a-bull-hackathon) at the end of the year. **Each session will be 2 hours. Here’s what you can expect to cover over the 4 days:** * Session 1: Introducing AlgoKit – your window into Web3 * Session 2: Writing smart contract logic using TealScript * Session 3: Mastering the Application Binary Interface (ABI) * Session 4: Interacting with the DAO dApp using dAppFlow ### Prerequisites * GitHub account ([sign up](https://github.com/signup)) ### Why Algorand? When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: * It is a layer 1 network that can process 10,000 transactions per second. * The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. * Our blocks are processed in 3.3 seconds. * We are a carbon negative blockchain as we are committed to being environmentally friendly.
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Algorand Developer Bootcamp | Beginner
### **Why should I be interested in learning about Algorand and participating in the Bootcamp?** * Algorand has different SDK's to help you with the building process in different languages and with extensive documentation. * The costs and speed for testing on Algorand are extremely low, which will allow you to learn and test without friction. * The companies that work with Algorand are constantly looking for developers to join their work teams. At the end of the Bootcamp you will be able to participate in solving challenges that will test your knowledge and will serve as a cover letter for you to apply for a Web3 job in the Algorand ecosystem. * This Beginner bootcamp will give you the foundations needed to take part in our Intermediate bootcamp. * Grow your web 3 developer skills on time to be able to participate in our exciting Global Virtual Hackathon at the end of the year. We'll release more details shortly. **Each session will be 2 hours. Here's what you can expect to cover over the 4 days:** * Session 1: Algorand Developer Onboarding with JavaScript SDK & AlgoKit Installation * Session 2: Building a dApp with Beaker and Deploying with dAppFlow * Session 3: Building & Debugging dApps with Beaker + PyTeal + PyTest * Session 4: Adding a TypeScript Frontend UI to the Auction dApp ### Why Algorand? When you decide to start working in blockchain, it is essential that you know the characteristics of the protocol that you are going to use, here are those of Algorand: * It is a layer 1 network that can process 10,000 transactions per second. * The cost per transaction is 0.001 ALGO == $0.0003 USD Approx. * Our blocks are processed in 3.3 seconds. * We are a carbon negative blockchain as we are committed to being environmentally friendly.
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Reach - The Easiest and Safest way to Build DApps
Blockchain development is hard. Existing tooling is complex, time-consuming to use and not robust against common programming oversights. Reach is fundamentally changing the way blockchain developers approach their craft, safely, efficiently and with formal proofs.