Category: Blockchain Development

erc20 rsk openzeppelin logos

ERC20 Token Development on RSK with OpenZeppelin and Web3.py

Andres Bachfischer9 Comments

Reading Time: 8 minutes

In my last article, I’ve shown you how to make a Solidity ERC20 Token for the RSK Mainnet, how to import and use OpenZeppelin libraries and contracts, and how to use Truffle to deploy and interact with our contract.

Although we succeeded in our quest and accomplished our objectives using Truffle, eventually this suite might present failures when you are sending transactions, deploying or managing accounts. In our case, while following the previous article instructions, I’ve had problems managing newly created accounts in Truffle and sending transactions.

rsk logo

Introduction to Smart Contracts Development in RSK

Andres Bachfischer11 Comments

Reading Time: 9 minutes

These last years there has been growth in Smart Contracts development, predominantly in the Ethereum blockchain. Ethereum, being a different type of blockchain than Bitcoin, can execute concise lines of code inside its chain, a job that Bitcoin (specifically designed to send transactions easily) can’t do. Here is where RSK intervenes building a sidechain tied up to Bitcoin through a 2-Way Peg system, managed by the Federation Partners, that makes code execution possible. Instead of designing a new programming language for developing Smart-Contracts, they used Solidity, the same language that Ethereum uses. This has two benefits: not only programmers won’t have to learn a new skill but also contracts in the Ethereum network could be deployed in RSK without much effort, taking advantage of the vast market capitalization Bitcoin has.

smart contracts - solidity and travis logos

Test Solidity Smart Contracts Using Travis CI

Catalina JuarrosNo Comments

Reading Time: 2 minutes

Our smart contract development team is using Travis CI to integrate automated testing into GitHub repositories. This guide for this great tool will not go into detail about Travis CI itself, but rather explain how to automate tests for Solidity smart contracts. We will be using Truffle for running and building tests and Ganache to set up the network since Travis has built-in support for JavaScript and Node.js.

Smart Contract Short Address Attack Mitigation Failure

Pablo Yabo11 Comments

Reading Time: 3 minutes

Overview Our  smart contract audit team found that Short Address Attack mitigations can cause several problems with smart contracts. A Short Address Attack is when a contract receives less data than it was expecting, and Solidity fills the missing bytes with zeros. The deployed smart contract cannot prevent this and will interpret those extra zeros as […]

Fast Smart Contracts Execution in an Ethereum Private Blockchain Development Environment

Pablo YaboNo Comments

Reading Time: 1

We describe a geth source code change which enables faster block mining. We hope this option will be included in Ethereum command lines. Private Ethereum blockchains may be deployed by private entities to use in production or in the software development process. There are different ways of speeding the development environment. Some developers choose an […]

Real World Project in Private Blockchain Development

Pablo Yabo6 Comments

Reading Time: 2 minutes

In the blockchain development industry lot of new technologies had arisen in the latest months. Unfortunately, most of the new platforms are not ready to use in production or directly they were built only to develop Demos. Our developers in Coinfabrik have been struggling to use them in the real world. Our customer asked to use Hyperledger but our initial […]

ECDSA Security in Bitcoin and Ethereum: a Research Survey

Hartwig MayerNo Comments

Reading Time: 1

Elliptic curve cryptography is becoming more and more popular. One of its main supporters is the cryptocurrency system Bitcoin which uses an elliptic curve scheme for their digital signatures. Smaller key size, a more efficient implementation than the RSA system, and a similar level of security make elliptic curve cryptography an interesting alternative to RSA. […]

Coinkite and Bitcore Logos

How to Use Coinkite’s Multi-Signature Wallets with Bitcore (Beginner Friendly Article)

Pablo YaboNo Comments

Reading Time: 7 minutes

The Bitcoin community has been talking about multi-signature wallets for years. However, it is still very difficult for end users to use these wallets. Multi-signature wallets should allow copayers to communicate, but there is no standard protocol for seamless communication between copayers. The Bitcoin community should standardize the communication process. We’re going to learn to […]