Finality and fork resolution in Blockchains
The most powerful innovation of blockchains is the creation of a notion of truth everyone can trust. Read more to learn about forks and notions of finality.
Blockchain
Non-Fungible Tokens in Ethereum: ERC-721
If 2018 was the year of ICOs, 2021 is the year of NFTs. In this post I explain the ERC-721 standard, that defines NFTs in Ethereum.
Fungible Tokens in Ethereum: ERC-20
Before NFTs became popular, there was the simpler notion of Fungible Tokens. Knowing about FT and their support in Ethereum will help you understand NFTs better. In this post, I go over ERC-20 and how to use Fungible Tokens in Ethereum.
New Chains on the Block
March 2021. The days are longer, Covid shows the first signs of receding and Spring is coming. For the Ancients, this was the beginning of the new year, a time of renewal and hopes. So too it is for Coder’s Errand. This month marks the third anniversary of this blog, and with it new changes …
Echoes from the Future – Chain Reorganizations
Truth in a blockchain is just one of many histories. Time-related bugs can be as non-intuitive as quantum parallel universes.
Fungible and Non-Fungible Tokens in Blockchains
Part of this series: Fungible and Non-Fungible Tokens in Blockchains Fungible Tokens in Ethereum: ERC-20 Non-Fungible Tokens in Ethereum: ERC-721 I love how Blockchain moves so fast. In just a few years, we have grown from nothing more than Bitcoin to a multitude of different projects exploring the limits of the technology. 2019 and 2020 …
How ZK-SNARKs Put Privacy in Blockchains
If you own Bitcoin, your history of transactions is public to everyone who knows your wallet address. In this post, I show how ZK-SNARKs can be used to enable confidentiality of transactions in a crypto-currency.
Implementing ZK Snarks: a Story
My interest in ZK Snarks began at work, when I took the task to investigate this technology and implement a prototype that could later evolve into a product.
This post is the first of a series chronicling our progress in that exploration, and the difficulties we found.
Can Algorand Solve Blockchain Scalability?
Scalability is the main problem to be solved for blockchains. Consensus mechanisms different from Proof of Work can make blockchains much faster. Algorand proposes a very interesting consensus mechanism, which I explore in this post.
More price functions for Token-Bonding Curves
In my previous post about Token-Bonding Curves, I showed that Bancor only allows 4 different types of curves. But that does not have to be the whole story, if we allow the reserve ratio to fluctuate. Today, I examine some variants that don’t fit in that scheme. Positive Initial price I start with simple variants …