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Smart contract platforms are often considered to offer better long-term investment potential than pure cryptocurrencies. Despite Bitcoin now being more than ten years old, cryptocurrencies continue to face criticism for their speculative nature. On the other hand, a development platform can derive long-term value from the various projects built on it.
Hey everybody, this is the second post of the series on writing apps the Git way, where you just go take a cup of coffee and browse a Git repo to learn something new!
Overflow is a situation when uint reaches its byte size. Then the next element added will return the first variable element. This is only for <0.8 Solidity.
Here I'd like to introduce a website developed by me and my friend in order to provide a better experience for Ethereum smart contracts developers and blockchain enthusiasts - https://justsmartcontracts.dev/. But first I'm going to explain the reasons lead to creating of this website.
Rootstock is the ‘smart’ version of Bitcoin that operates as a layer 2 on top of the main Bitcoin blockchain, combining the functionality of smart contracts.
Announcing the beginning of the Koinos blockchain revolution with the release of a testnet developer preview! A critical step toward a fee-less blockchain
When looking at Ethereum, there are some good things I can say about it and some bad. Ethereum did early stage investors in their ICO right, in the fact that the 2014 ICO price was $0.30.
Subject matter experts often have an eccentric and quirky nature. Kier Finlow-Bates is no exception. Kier has the ability to convey highly technical information in a consumable format, coupled with timely humor. I've thoroughly enjoyed his in-depth presentations on all things Blockchain.
Solidity design patterns are essential for creating secure, robust and scalable smart contracts. In this tutorial, we will learn proper implementations
Everyone has their favorite programming language, just as everyone has their favorite shoes or favorite food, but I’m not here to tell you to give up your favorite language (trust me, I would never dream of such a thing). Instead, I want us to take a journey together, a journey will take us through many things. We’ll discuss Turing completeness, evaluate its usefulness in regard to smart contracts, look at alternatives, and hopefully we’ll come to the same conclusion together at the end. Spoiler alert: the conclusion is that giving Solidity a monopoly on smart contracts is a terrible, foolish idea.
People breach agreements all the time. The way people violate contracts is not always cut and dry, and remedying those breaches often involves lawyers effectively renegotiating a deal based on ambiguities. Sometimes the contract violations are clear cut -- an Air BnB tenant who is now squatting or someone refusing to pay fees they committed themselves to in a contract. But if the defaulting party acts badly, remedying these breaches may take armed agents of the state authorized by a judge.
Hey dapp developers! Today I am excited because I am posting the step-by-step process that allowed me to deploy my first Ethereum smart contract on the Ropsten testnet.
Smart Contracts are immutable, transparent, secure, and decentralized. Follow this example to learn how to write them with the programming language solidity.
The number of thefts of funds from crypto projects is not decreasing. Most of the incidents are related to smart contract vulnerabilities you need to know.
Fat contracts conversely behave like traditional internet applications, they add access to all services, even if they are not operating on a blockchain.
This blog delves deep into how I created an onchain Loot Royale NFT Collection Dapp - both smart contract and frontend in the most detailed manner possible
In this blog post, I am going to show you how to release an NFT collection on your site without knowing all the complexity and best practices of smart contract
Free TON blockchain - the ultimate smart contract platform. The user stakes tokens into DePool. Free TON works on the End-to-End decentralization using DeBots.
Blockchain technology currently limits developers in attempting to empower crypto users with better opportunities than the ones traditional financial ins
Creating a Smart Contract to allow Solana users to have transactions between each other is one of the best ways to get the most out of the platform's features.
If you’ve been in the cryptocurrency and blockchain community for a while, then you’ve surely heard the phrase “we just need a killer app” to get crypto into the mainstream. Now, as you’ve most likely also noticed, many of the current decentralized applications that are out there have great ideas backing them — perhaps even revolutionary ones — so why aren’t any of these dApps achieving widespread use? Why aren’t they, or one of them, the “killer app” that we need? I certainly don’t think the gambling dApps topping the daily usage tracking charts would constitute such an app.
Upgradable NFTs will uprise as the next innovation in the non-fungible token marketplace. It will allow collectors to engage & have utility for their NFTs.
The article addresses common cybersecurity vulnerabilities identified during smart contract audits, social engineering's role in web3-related cyber fraud, etc.
In the nascent stages of blockchain technology and its accompanying digital assets, smart contracts were the key to unlocking the vast potential of this newfang
A smart contract is a computer protocol intended to digitally facilitate, verify or enforce the performance of a contract. Know how it iexecutes in Hyperledger
Free TON is a community-driven blockchain project, owned by everybody and nobody at the same time. Governance 2.0 aims to decentralise processes even further
In late 2019, the Aragon Project, decided to leave the Polkadot ecosystem due to the lack of a viable blockchain virtual machine at the time. After that, the Polkadot team added EVM support on the Substrate framework, enabling EVM blockchains in the Polkadot ecosystem.
The demand for Web3.0 solutions is at an all-time high, but there isn't enough material available to usher in the army of developers required to fill the job op
The first episode of this series describes Determinism.
This article will explain the most fundamental principle each and every blockchain follows by design.
Until today, access to DeFi services for Bitcoin holders has required handing Bitcoin over in return for an IOU on ethereum. Now Sovryn aims to change that with its Bitcoin native DeFi platform, with a strong focus on trading, leveraging, lending.
Its growth has brought new opportunities to users, developers, and the industry in general, but has also brought new risks that investors may not be aware of but must endure nonetheless.
You can find partially explained material for ERC token standards, but I have come up with these articles to explain about three major token standards.
In this article, we’ll explore the architecture of a decentralized Demand Side Platform (DSP) that leverages blockchain technology to deliver interactive ads.
Rug pulls are a lucrative fraud in which developers create new crypto tokens and market them to investors to increase their value and overall liquidity.
Blockchain is undisputedly an ingenious invention. It’s a technology that began as underpinning for virtual currencies but it is quickly becoming obvious that blockchain is more than just bitcoin.
Each industry, be it Agriculture or Supply chain, is keen to explore the invaluable benefits that blockchain use cases can supplement. Real Estate and land management sectors are also not far behind. Numerous projects are already being planned and implemented even as you are reading this.
Very little has changed the last couple of decades when it comes to real estate practices. Buying and selling a home today is much like what it was fifty years ago. It's more or less the same process as when our grandparents' generations purchased and sold homes.
In this tutorial I will show you step by step how to use Remix and Metamask, which are tools that were originally built for Ethereum, to create and deploy a simple smart contract on RSK’s Testnet.
Decentralized finance, or DeFi, is a relatively recent variation on FinTech that is seeing a massive surge in popularity. As of the time of writing, there’s over $12.4 billion of value locked into DeFi, which is an enormous jump up from the $547 million it held a year ago.
Imagine you are writing a Solidity smart contract and one of its properties can be characterized as a type or state. In other words, something from a limited set of options. You immediately say to yourself: ”Great, I’ll just use enum type for this state variable.” On the one hand, this approach has some benefits like increased readability. On the other hand, it can easily take you down a tricky road potentially leading to problems.
Ethereum development, while still very nascent in feel, has come a long way. When I started developing Solidity smart contracts and Ethereum dapps in 2017, Truffle and Web3.js were the industry standard. These are great tools and I have tons of respect for the people that built them. However, anyone who has used them has dealt with bugs and sometimes poor developer experience. There are a few new tools out there that have clearly been inspired by these first sets of tools and made the developer process much better.
The world witnessed some of the massive DeFi hacks in 2021 on some of the most renowned protocols like bZx, Cheese Bank, Harvest Finance, Value Defi, etc.
In the third quarter of 2022, Beosin EagleEye monitored over 37 major attacks in the Web3 space, with total losses of approximately $405 million, down approxima
A brief guide about pros & cons of Cairo lang and Top 10 resources to answer your question how to learn Cairo in 2022 and how to scale dApps using STARKs
In the last decade, electronic sports or eSports have been rapidly growing in popularity, in some cases gaining a larger viewership than real-world sporting events. These virtual tournaments, where players from across the world pit themselves against each other, have been facilitated by internet technology that has made real-time worldwide gaming possible.
Etherscan has a handy search utility which, along with its handy verification and decompiling features, lets you peek at the code of many ERC721 to compare.
In this article, I take a deep dive into Chainlink and blochain protocols, and explain why I think Chainlink is the greatest investment of our lifetime.
The CEO of Koinos Group discussed integrating smart contracts into social applications with the founder of gFam, a site dedicated to monetizing creative content
Enterprises need to collaborate with each other to accomplish business objectives. In the course of business, there are situations that call for utmost sensitivity in conducting transactions. Here, it is not necessary that all the involved parties can be trusted. Conventional legislation provides trusted third-party intermediaries to create a trustworthy environment.
Many people are divided over issues that technologically can be solved. The whole pro-life vs. pro-choice argument are one of those issues. Pro-life people believe in the concept-unborn child Hitchen's style argument. The whole argument is that most studies towards modern day embryology are pointing to abortion terminating an unborn child. Pro-Choice on the other hand look at the financial and environmental downfalls of potentially raising an unplanned pregnancy, as well as the reproductive rights of a women not wanting to raise or have such child. Keeping in mind the dangers of cervix damage risk, it perhaps is much safer to give birth over giving an abortion.
Disclaimer: I don’t stand to gain any benefit from my review of ChainLink. This article is not intended as investment advice. It is just my opinion. As always, DYOR before investing.
Even if a project has been tested for full-functionality, it is important to work with a smart contract audit company to ensure they have been reviewed.
This blog post introduces the smart contract reentrancy attack bug and its impact along with describing fixes for this type of vulnerability. Read on...
Upon completion, you will have gained a deeper understanding of how to programmatically transmit Ethers and will have a working sample for future reference.
Chainlink is the market-leading oracle network, helping secure hundreds of billions in DeFi and providing off-chain data and compute to thousands of dApps.
It was in July 2018 when Vitalik Buterin, in a well-balanced TechCrunch Sessions: Blockchain, said he wished all centralized exchanges would burn in hell.
Blockchains depend heavily on network effects, i.e. the notion that networks such as telecommunication services, the Internet, or social networks become more valuable when their number of users grows. This is why ecosystem building is one of the main factors that drives the value of a Layer 1 blockchain enterprise. Here is a comparison of how different blockchain projects handle this.
Ethereum 2.0 will bring about a lot of changes to the Ethereum network. The main purpose of the upgrade is to make the blockchain FASTER (>15tx/sec), and more SECURE (51% attacks, centralization), while also saving energy (as opposed to mining with electricity). But this update will also imply a host of other changes, such as economic changes, which can also be seen as a way of responding to Ethereum’s stubborn critics, who keep pointing out its crucial issues, such as scalability (remember Cryptokitties?) and fees. Ethereum 2.0 shall lead the way for Ethereum to advance both its technological and economic structure in an attempt to better master the challenges of Blockchain in 2020 and beyond, as well as create new opportunities. However, the most important thing to note here is, that Ethereum 2.0 eventually aims to convert the ETH blockchain from Proof of Work to a PROOF OF STAKE mechanism, and introducing shard chains.
Ethereum's latest implementation of EIP-4337, deployed on March 1st, 2023, addresses the UX problem with a solution called Account Abstraction. But what is it?
Is AI coming to put software developers out of a job? Find out with Compliance Officer Michael Fasanello and Smart Contract Security Researcher Philip Werlau
In this article I’ll introduce an implementation for Singly and Doubly Linked Lists, which you can reuse or modify for your own purposes. All the code is available in github or as an npm package.
Everything you need to know to build your first custom blockchain using Substrate. Learn exactly how to build, test, and deploy your own pallets on Substrate.
We hear cloud in connection with technology all the time: cloud servers, cloud computing, cloud gaming… It is safe to say that cloud has penetrated almost every sphere of our activity. But what does it actually rain on us (yes, big pun intended)? Will it be a harbinger of a big storm or a productive life?
In this piece, the CTO of Etherisc discusses the central role that hybrid smart contracts and oracles play in enabling parametric insurance products on-chain
Smart contracts, in general, offer the ability to determine factors and expectations set out by the contract. In the field of programming, factors and expectations can be described as ‘variables’ and ‘conditions’ within the actual code.
Deploying a smart contract to the Ethereum Network is not as complicated as the process may appear. You only need to finish eight steps to get yours online.
Building great applications takes both decentralized and centralized databases, and so Koinos is being designed to enable developers to integrate a decentralized database into their stack regardless of how much or how little they want to rely on that database.
Smart contracts allow two parties to enter into an agreement. Take a deep dive into smart contracts to show how to reuse a single contract over and over again.
This tutorial combines blockchain technology, real-time communication, and user-generated content to create an interactive platform that rewards users for their
Orbs, a leading Layer-3 blockchain solution, announces its TON Verifier. The open-source application lets users who write code for The Open Network (TON) chain
Unlike highly volatile popular cryptocurrencies, stablecoins are virtual assets that maintain their value since they are pegged to less volatile assets.
An introduction to the blockchain, explained with blocks to make the complicated topic a little easier to understand for readers less familiar with it.
At over 55,000 TPS (and increasing), the Free TON blockchain is officially the fastest blockchain in the world, outperforming all expectations since its launch.
Writing secure smart contracts is hard. In this article I'll look at 22 security tools from across web3 available at each stage of smart contract development.
The Genesis of blockchain and crypto have drastically turned the world upside down. Every existing sector is on the verge of a complete overhaul. The biggest transformation struck traditional lending.
This guide, written by whitehat Lucash-dev for Immunefi, will help you set up a local environment, reproduce DeFi exploits. Join Immunefi bug bounty platform!
Smart contract development is a complex process that consists of different vital steps. Find out which tooling provides the best value for Web3 developers.
Blockchain smart contracts enable trust-minimizing escrow agreements, where value can be received, held, & remitted pursuant to objective conditions & triggers.
Despite its incredible proliferation in the past two years, the blockchain is still a relatively novel technology, requiring continual development and maturation before it can attain the prominent role that many expect it to play in the digital age.
Blockchain can become the main feature not only of financial markets, but also of many other sectors of the economy. In theory, any asset can be tokenized, and the rights to it are represented in a distributed ledger. But it is most likely that in the coming years, this process will affect the following industries - Infrastructure, real estate, intellectual property, music and culture, stocks and trade, gold and rare precious metals, foundations and their assets, art and collectibles, foreign exchange transactions and insurance. But at the same time, it should be understood that the tokenization of these industries will seriously change them, and will actually hit finance.
Have you cast your vote for the best of 2020's tech industry yet? Visit NOONIES.TECH today if not — there's little under a month left before voting closes! At the same time: read this interview with software developer and top Hacker Noon Contributor in SMART CONTRACTS, Oleg Kondrakhanov, from Russia.
After the global economic crisis of 2008, the question of trust in the modern international financial system arose globally. The answer to this request was the emergence of the first decentralized Internet system — Bitcoin, which from “decentralized” money turned into a valuable financial asset by 2020.
A separated couple in Austria have made history by transferring a car's ownership using automated legal smart contracts.
It's an age old story: Boy meets girl. They fall in love, but later grow apart. Then they enter into a groundbreaking legal smart contract to transfer ownership of a car ...
I’m Andrew Levine, the CEO of Koinos Group and below you will find the third episode of the Koinos Group podcast in which I explain Koinos-Types which is an important solution for adding multi-language support to Koinos. At Koinos Group we’re developing the Koinos blockchain which will have free transfers, free accounts, and free smart contracts. These features, in combination with a number of technical innovations will make Koinos the first programmable blockchain with no barriers to entry and as a result we expect it to touch every corner of the technology space.
After disruption, there's mainstream incorporation. DeFi companies need to incorporate best practices from traditional finance to shape the new digital economy.
This is an in-depth series of Blogs around OpenZeppelin's smart contract security puzzles. The aim of blogs is to provide a detailed explanation regarding various concepts of Solidity and EVM required to solve a Puzzle. It is highly recommended to attempt to solve these puzzles before reading further.
Unlike my sleeping pattern, design patterns are meant to make things more stable and predictable in the future. It is an elegant solution to common problems in software design.
Blockchain is a robust and secure technology that every business wants to embrace in 2022. Let’s dive a little deeper into the concept of blockchain technology.
The main motivation behind RIF Enveloping is to allow users to pay for transaction fees using their preferred tokens, driving down the barriers to DeFi adoption
Bitcoin literally jolted the whole currency market and definition of money itself. This was a fascinating concept thbat was brought about by Satoshi Nakamoto, a pseudonym. BTC introduced the world of cryptocurrency and coined the idea of crypto trading.
In my opinion, the most important part of EOS is “OS”. After many architecture redesigns and refactoring, EOS became an excellent blockchain-based OS allowing projects to launch fast and secure blockchains with a flexible account system and fully functional smart contracts.
In this article, we are going to implement a simple and plain “smart blockchain” with Python language and compare it with a blockchain. We hope that by doing this, the main concepts and advantages of this technology will be more clearly specified and welcomed by the developers and the blockchain community.
Though there have been more and more developers and product designers joining Web3.0 world in recent years, it is almost ignored by most of them that they are still using centralized infrastructure — data analytic tools — to build apps and webs. Every minute, project builders are making themselves part of the reason for data breach events, as they have to collect user data intendedly or unintendedly for product improvement.
Blockchain technology has significantly changed the entire cryptographic space. Its key features are simplicity, decentralization, security, and immutability. It is these qualities that have brought technology great popularity.
Build the future of DeFi with Ape! From NFT marketplaces to you're own decentralized crypto exchange, Ape's framework provides elevated code for creators.
The article talks about Web 3.0, DeFi and smart contracts. Web 3.0 is an evolution enabled by blockchain and smart contracts opening the door to the next era.
A smart contract represents the terms and conditions written in codes that automatically transfer funds from one party to another once the requirements are met.
For a few years, the growth of online casinos has been surprising. According to some projected estimates, the online gambling market is projected to reach $102.97 billion by 2025. The figures that are managed by this industry have been amazing.
The question of “what makes the best smart contract platform” really depends on who’s asking it as there are many variables which will taken into account or not depending on who is asking the question. An investor will usually only consider the value of the underlying token, which isn’t necessarily an indicator of “the best.” As we know by now, token prices can rise and fall in minutes off the back of rumors and speculation. Just look at the value of Tron each time Justin Sun ends up in the press.
Smart contracts are beginning to resemble a sizable disruptive force for the legal sector, even if they have not yet reached their full technological and proced
As a developer, Ethereum keeps you on your toes. On the plus side, you constantly learn something new and the thrill of the “aha” moments is undeniable.
This article talks about compliance by design in a blockchain ecosystem focusing on Zk-protocol and the development of smart contracts using rust language.
We estimate that the application of Blockchain to global supply-chain alone could result in more than $100 billion in efficiencies. Add improvements in provenance and traceability of pharmaceuticals and food.
There is an increasing number of smart contract platforms rolling out in the crypto space, with many becoming household names. However, a dark horse in the race to be the most efficient and secure blockchain is ‘Nexus’. Given its low market cap, most people have never heard of this seven year old blockchain, yet it delivers far more than many of the leading smart contract platforms today.
Hi, My name is Andrii Bondar. I'm a product designer working on the zkSync project, a Layer 2 solution for scaling the Ethereum blockchain. As a product designer, I always was interested in how we can make mass adoption of blockchain. I started to wonder about this after realizing that today's technologies are ready for this.
The beginning of 2021 was challenging for our team, and as the story showed later, game changing. At MetaLamp, we started a partnership with IOHK, the company that founded blockchain platform Cardano. Our team has been invited to take part in the Plutus Partners Program in order to help facilitate Cardano ecosystem development.
Many experts and public service officers are not absolutely happy or impressed with the blockchain technology appearance in the modern world. It has many opponents and skeptics, including financial regulators, who are not inclined to rush things faster as possible.
How one DAO solution is one step ahead of most competitors because it automates the execution process for many smart contracts in decentralised governance.
So easy, an ape could do it. Thoughts from the lead developer and Top Ape at SnowApe, a Web3 real money gaming project that made a blockchain app from scratch.
Morphware is a decentralized approach to deep learning. The main problem that Morphware aims to address is the computational complexity required to train.
It's no secret that business is undergoing fast change. Companies need to adapt when new technologies, like smart contracts, emerge to remain competitive. A crucial part of this adaptation process is ensuring compliance with regulations. This is where a company's KYC (Know Your Customer) process comes into play.
[277. RIF Pinning Introduction: A Decentralized Marketplace
DAO stands for a Decentralized Autonomous Organization. The definition is right there in the name; it’s an internet-native organization where the management is decentralized, and the decisions are autonomous thanks to its programmed logic.
If you want to do anything interesting in Ethereum, you will have to interact with smart contracts. Whether you want to send ERC20 tokens like LINK or DAI, trade non fungible tokens like digital art, or earn interest on your crypto and interact with other DeFi products, a smart contract is always involved.
This is a written recap of a discussion organized by Dominicans on Wall Street, a non-profit organization, between legal experts, venture capitalists, and government officials. The author has no vested interest in any of the projects mentioned and does not offer investment advice.
The insurance industry is a huge market. In the United States, in 2019, the volume of paid insurance premiums amounted to a trillion dollars. However, despite such volumes, the industry is experiencing great difficulties, because of which insurance companies are losing more than $100 billion every year.
Proof-of-Stake (PoS) has been rising as one of the sexiest techniques for replacing Proof-of-Work (PoW) currently used in mainstream blockchain technologies such as Ethereum and Bitcoin. The objectives of PoS-based blockchains such as EOS.IO and XinFin Hybrid Blockchain are not only to eliminate the PoW-related electricity consumption but also to provide a scalable solution to tackle the transaction processing performance problem in Ethereum and Bitcoin. The latter can only process around 10–15 transactions per second, which is not comparable to Visa and MasterCard.
In this tutorial I will show you step-by-step how to create your first front end to interact with a smart contract deployed at RSK testnet, using only Javascript and HTML and connected to a wallet using a web3 provider.
In this tutorial, you will learn how to code an Escrow smart contract step by step, you will also get to understand why it is important for you to learn.
It seems almost every week we hear of bugs and security incidents involving smart contracts that result in significant financial and reputation losses.
This is an in-depth series of Blogs around OpenZeppelin's smart contract security puzzles. The aim of blogs is to provide a detailed explanation regarding various concepts of Solidity and EVM required to solve a Puzzle. It is highly recommended to attempt to solve these puzzles before reading further.
We humans are amazing creatures, we are full of contradictions, we seem to combine surprisingly incompatible things - anger and kindness, loyalty and betrayal, honesty and deceit, greed and generosity. Some people may be vicious and greedy deceivers capable of taking any actions to achieve their selfish goals, while others may disinterestedly and generously help strangers in distress.
The article discusses the importance of privacy for DeFi protocols and how cross-chain privacy is critical for protecting the financial privacy of users.
Bitcoin caught the attention of technologists and anarchists alike following the 2008 Global recession. Ethereum took Bitcoin’s ‘Digital Gold’ status and gave us smart contracts. ICOs took smart contracts and gave us supply chain management solutions for problems that we never knew existed.
The main network is running, transactions are being sent, the wallet is working. What's next? In this article, we will consider how to maintain a network and solve its problems.
This tutorial shows you how to build an NFT auction site using React, Solidity, and CometChat. We will use React for the front end and Solidity for the smart co
We’re going to write a new smart contract in Michelson using a string passed in the parameter by the user that we'll concatenate to the string already present in the storage before saving the new string into the storage.
‘Smart contracts’ is a misnomer. Despite its name, smart contracts on Ethereum are not self-executing digital agreements. Smart contract code only run when triggered by an external account. In other words, you need an external process to trigger the smart contract.
In this slogging thread, we had Dean Tribble, the CEO of Agoric, with us to participate in the AMA. We discussed JavaScript, smart contracts, and defi.
Web3 development is officially the new way to build web applications, and if you are not there yet, you need to catch up. The way to master building web3...
This episode features smart contracts. After reading through the article, you will have a basic understanding of smart contracts use cases and benefits.
In this article, we are going to implement a simple and plain “smart blockchain” with Python language and compare it with a blockchain. We hope that by doing this, the main concepts and advantages of this technology will be more clearly specified and welcomed by the developers and the blockchain community.
