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Tag Archives: blockchain

Behind-the-Scenes: a Darknet Market on the Ethereum Blockchain

A team of developers are nearly finished with a decentralized market known as “Tralfamadore.” Everything on the market—from vendor listings to sales themselves—will be free from the confines of any one marketplace; the backend, running on the Ethereum blockchain, will function as a database for market content. As a decentralized system, nobody holds your funds and all orders are controlled ... Read More »

Abusing Bitcoin Blockchain for Fun and Profit

Hackers don’t stop at ‘What is it used for?’ but always extend their curiosity to ‘What it can be used for?’ and that’s part of what differentiates hacker’s mindset from many others. With that in mind, today we will look at good ol’ blockchain. Because it’s used for writing transactions, btc blockchain carries some properties you’re probably familiar with: public ... Read More »

Lelantos – The First Blockchain Based Anonymous Package Delivery System

Shopping in the real world gives one the chance to maintain their privacy, by using cash; thus, revealing no personal data such as one’s name, address…etc. Oppositely, shopping online mandates providing all sorts of private data for billing and/or shipping purposes. Even though cryptocurrencies, such as bitcoin, have provided a revolutionary private billing solution, via enabling pseudonymous transactions, anonymous shipping ... Read More »

Tutorial – How To Code and Execute Smart Contracts On Ethereum’s Blockchain

A smart contract represents an account holding object that runs on ethereum’s blockchain. It includes code functions and can interact with other smart contracts, record data, make decisions and send ether transactions to others. A smart contract is defined by its creator, yet its execution, and the services it offers, is determined by ethereum’s network. It will exist and remain ... Read More »

Utilizing the Blockchain Technology To Maximize the Security of Certificate Authorities

Throughout the past few years, many studies have experimented implementation of the blockchain technology in various aspects on internet security. A recently published study analyzed the influence of the blockchain technology on the development of services offered by various cybersecurity companies across a myriad of industries and sectors with emphasis on certificate authorities and the context of critical infrastructure. Furthermore, ... Read More »

Can the blockchain technology disrupt the online gaming sector?

Apart from what one might think, the link between online gaming and cryptocurrency, particularly bitcoin, has existed since the early days, when bitcoin was worth no more than $10. I remember in 2012, buying bitcoin via Linden Dollars (L$), which was a virtual currency of an online MMORPG, or a virtual world as described by its creators, known as “Second ... Read More »

Blockstack – A Blockchain Based Trust-to-Trust Internet Architecture

The internet’s initial design, which relied on the end-to-end framework principle, led to mobilization of program specific logic and complexity to the peripheral parts of the network, while keeping the network’s center focusing on the simple task of delivery of data. Nevertheless, the originally proposed end-to-end principle did not offer sufficient levels of trust and security. There are multiple central ... Read More »

The IPFS and the blockchain

Some of our readers have probably heard about the IPFS or InterPlanetary File System. It’s an hypermedia distribution protocol created to make the web faster, safer, and more open. The IPFS is designed to provide a decentralized alternative to the current http protocol that is censorship resistant and much more efficient. Like Bitcoin, the IPFS is a peer-to-peer network run ... Read More »

The bitcoin blockchain and truly trusted computing

The idea of “Trusted Computing” is neither new nor complicated and involves code being electronically signed so that it cannot damage your computer. The idea is to “certify” software to avoid it causing the computer to crash or any other negative effects. The practical problems of such technology become obvious if you use either open-source or free software – the ... Read More »

The Blockchain Technology Is On the Agenda of the Upcoming G20 Summit

It seems that bitcoin, and the blockchain technology in general, will be one of the priorities on next the Group of Twenty (G20) summit’s agenda, which is expected to be held in Hamburg, Germany next July. Along the communiqué, which outlined the priorities of the upcoming G20 summit, the Presidency of the summit stated that the popularization of digital technologies ... Read More »

An Application That Converts National Fiat Currencies To Blockchain Based Cryptocurrencies

The high security levels offered by cryptocurrencies, via the blockchain technology, offer an ideal financial ecosystem for minting national currencies. A recently published paper introduced an innovative application that utilizes the blockchain technology to transform fiat money into a cryptocurrency; ether. This technology can become a part of a much bigger system, so that, after travelling outside his/her country, a ... Read More »

Blocktix : Decentralized Network for Event Hosting & Ticketing Using Ethereum’s Blockchain

Blocktix is a novel, decentralized platform for ticket distribution and event hosting. The platform operates via Ethereum’s smart contracts, which enable verification of authentic tickets rendering it almost impossible to counterfeit them. Blocktix is aimed at providing a decentralized network for distribution and sales of tickets. Individuals as well as companies can buy and sell tickets via means of cryptographic ... Read More »

The Blockchain Technology, Smart Contracts and Legal Procedures

A significant sum of money is spent every year in various litigation processes. Technically speaking, a significant portion of litigations can be prevented from even emerging provided that contracts, laws and policies are properly objectified. Today, the interpretation of legislations, policies and contracts yields a great deal of confusion and a myriad of ambiguities, which further complicates the process of ... Read More »

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Hallex – A Decentralized Cryptocurrency Exchange Via Ethereum’s Turing-Complete Blockchain

A large number of cryptocurrency exchanges have experienced cyberattacks that led to the loss millions of US Dollars worth of bitcoins and altcoins, during the past 4 years. In most cases, most cryptocurrency exchanges utilize centralized servers, where trading takes place, to store and manage digital assets, which renders them highly valuable targets for hackers. Accordingly, decentralized exchanges represent ideal ... Read More »

µchain – A New Mutable Blockchain That We All Need!

A group of researchers have recently published a paper that explored the idea of creating mutable proof-of-work (PoW) blockchains. They presented µchain, a novel mutable blockchain, that promotes modification of blockchain’s history. By definition, a blockchain represents an immutable, decentralized data structure that record a chain of events, such as financial transactions in case of a cryptocurrency system. Even though ... Read More »