Check out the solidity smart contract development process. Unit testing according to TDD — Disclaimer: The solution presented here is not production-ready, rather an educational presentation. I am learning myself so errors leading to serious vulnerabilities may be present in the solutions shown. Be careful referring to this as various risks may be involved including losing your and your users’ money.

Recently I have challenged myself to implement a so-called dividend-paying token. It’s been a blockchain Ethereum based smart contract that allows people to share some assets and benefit from them later on. — What is Dividend-Paying Token? An easy to imagine example would be an apartment that one cannot afford however it would be much easier if a bunch of fellows shares the effort. …

Do not look for blockchain companies on popular agency listings. The pitfall of software agencies' directories. All those present directories like clutch, goodfirms, etc are coming from traditional web2 structures and they put blockchain as a regular category similar to i.e. web design. Why is it wrong? Mostly because blockchain & Web3 are by at least one order broader term…

I’ve been using hardhat since my first lines of code in solidity. I remember being impressed by how easy it is to start for a JS developer. The vast majority of tools supporting smart contracts development are supposed to be operated in a javascript ecosystem. …

Recalling the idea from previous post there is a requirement to sign game item change by game developer. In such a way that the duo of change (link to metadata.json) and signature are public data and can not be breached. Signing change by game developer

Explained via illustrations — A quick reminder — in the series, users are expected to use game items in-game world. Using them to kill monsters gives them better items attributes in both the game world (in real-time) and the on-chain world (in the on-demand manner to save gas). Let’s discuss making a reasonable and…

How is metadata linked to NFT token, how to upload metadata.json and pic to IPFS, and more — When I first introduced game items as NFT tokens we have seen that on minting stage there is a possibility to add token’s tokenURI. But I never used it in a reasonable way. Instead, I’ve just input there some meaningless values. Token’s metadataURI is a way to assign some…

Game items can be easily represented with the use of NFTs. This is not an article about game philosophy however NFT enables many games to become play-to-earn platforms. One such concept is achievable by allowing players to trade game goods on open markets. It will be great for transparency if…

Over the next few posts, I will focus on developing a mini-project. It is supposed to deliver a solution to buy & upgrade & sell game items via NFT tokens. As such, I will develop an “upgradable NFT” smart contract. Goals The project is supposed to be a personal challenge. It…