Alice POS

Startups from all over the world were nominated, from North America to East Asia. In total, 44,000 startups were nominated in over 4,500 cities.

Meet the Winners of Startups in North and Central America

If Alice has $10 in her wallet, she should be able to buy goods only up to $10. So for example if Alice goes to a store, and there is a lamp for $10 and table for $10, she should be able to spend the $10 only on one of them.

Why do we need Proof of Work (PoW) in Blockchain?

Learn core database concepts by implementing a Python key-value store with crash recovery and efficient writes.



How to Build a Database From Scratch: Understanding LSM Trees and Storage Engines (Part 1)

Explore the role of oracles, the integration of voting systems, scalability considerations and Commitment Schemes for enhancing trust and privacy.

Relevant Blockchain Technologies for a Sustainable Reputation System

Since its commencement on May 24th, this Testnet has been a hotbed of activity, drawing enthusiastic engagement from our dynamic community.

Opside Pre-alpha Testnet Recap: 88 Miners, 17K Validators, 450K Users, 13.6M TX, Together We Made It

We'll explore consensus algorithms in easy terms. We'll see how these smart systems make keep computers on the same page and how they protect themselves. 

Consensus Algorithms: How Computers Agree and Stay Safe Together

Web3, a familiar and unfamiliar word, has recently appeared repeatedly online. However, how many people have really entered the Web3 world?

Things That Can't Exist Without Web3

What exactly is Rollup technology, what can you expect from it and how will you be able to use it?

Rollups Are All the Rage 

The rise of Web3 gives us reasons to believe that on-chain transactions will be one of the main factors shaping the future of economics. 

How does DeFi Act as an Economic Cornerstone for Web3?

In crypto, the privacy problem is a transparency problem. In order to attract trillions of dollars worth of value into DeFi, privacy is a necessity.

In a Sense, Blockchains are Crappy Databases

What's the technology behind cryptocurrencies and blockchain? It's a magic book that's based on magic.

Explaining Blockchain in 550 Words

history, concepts, principles, technical implementation, and development status of zero-knowledge proofs in the simplest language ever

Zero-Knowledge Proofs: The Simplest Explanation on the Internet

Kailin O'Donnell is the Director and Co-Founder of NEM Ventures, the VC and Investments arm of the NEM Blockchain Ecosystem. Kailin is a DLT advocate who has been deeply involved in NEM since before launch, coding some early SDKs for NIS1 and Symbol, and has assisted multiple companies building on the NEM blockchain. 

NEM Introduces Symbol & A New Multi-Layer Network for Enhanced Trustlessness

ETH2.0 is the planned replacement for Ethereum. Over the next several years, ETH2.0’s designers intend to completely subsume Ethereum’s consensus system and state altogether. With such a broad scope, we can’t say precisely what ETH2.0 will or will not include. We do have a few specs, and quite a few teams working on early implementations. At this point, the ETH2.0 designers tentatively plan to include sharding, Casper, state rent, and an eWASM VM. Initial client testing is underway, and a feature-light ETH2.0 testnet is expected to launch <a href="https://medium.com/prysmatic-labs/ethereum-2-0-development-update-19-prysmatic-labs-d4767f0bd6d7" target="_blank">within three months</a> (Q1 2019). At first, ETH2.0 will source its Ether (but not its security) from the main Ethereum chain, but designers eventually plan to invert the relationship by making ETH2.0 the main chain, and Ethereum 1.X a shard chain under its management.

What to Expect When ETH’s Expecting

Banking is something that many of us take for granted, whether that’s because of our easy-to-use credit cards, our secure and federally insured bank accounts, or it could even be due to the direct deposit into our accounts on a biweekly schedule from our employers. For many, though, the convenience and security of established banking is out of reach, and whether or not they resort to using expensive (and sometimes illegal and dangerous) alternatives like check-cashing offices, hiding their money in a coffee can in the backyard, or by some other means, the problem of poverty and income disparity will remain. Have you ever considered how difficult life is without access to a bank? Even those with filtered options — options that aren’t restricted by any external force but are limited in the scope of their usefulness — can be found in many first world countries. Filtered options like check-cashing centers, prepaid debit cards provided by an employer instead of a check, or relying on pawn shops for “credit” since they have no credit card options. Until we offer fair, affordable, and unfiltered banking options to the masses we will never reach greater financial equality in terms of banking access across the globe.

How to Overcome Poverty by Helping the Unbanked?

a.k.a. How To Understand Ethereum Without Traumatizing Your Brain

Ethereum, for Earthlings

Voting is the crucial foundation that allowed most current societies and institutions succeed through giving members voice. It is the general mechanism for implementing democratic decisions and expressing opinion used not only for electing public officials, but also selecting decisions within a company. Even in the world of blockchain a voting comes in the game to facilitate consensus on the next block state, such as in a Proof of Stake&nbsp;, or to implement executive decisions as in the case of Decentralized Autonomous Organizations (DAOs).

Knowledge Extractable Voting for Blockchain & Distributed Governance

Rest assured. While the space might seem mad, the people in it are most certainly not (or perhaps we are!). The blockchain space is both wondrously vibrant and amazing, but also confusing, stressful and downright odd at times.

The Blockchain Toolkit 1.0

Today, more and more blockchains are being created with various new offerings they seek to provide. This article seeks to briefly explore the different consensus algorithms used. A consensus’ main purpose is to achieve agreement on agreed transactions among a distributed system (on the <a href="https://hackernoon.com/tagged/blockchain" target="_blank">blockchain</a>).

Types of Consensus Protocols Used in Blockchains

Step back from Bitcoin for a second. Don’t worry — it won’t be for long.

Blockchains that SCALE into the BILLIONS

Ask 10 people “what is blockchain technology?” and you get 10 different answers — even in the crypto-scene itself. The best approach to forming a true understanding blockchain is by understanding the underlying technologies step-by-step.

The Quick, 3-Step Guide to Blockchain Technology.

Explore a new DeFi protocol enabling faster, secure, and collateral-free cross-chain options with robust defenses against misbehavior and trading inefficiencies

Study Uncovers Efficient Cross-Chain Option Protocol With Reduced Latency

Explore the various programs proposing justifications for the Born rule in Everettian quantum mechanics. 

The Born Rule in a Mixed-State Everettian Multiverse

Humans are social creatures. We crave connection, recognition and affection from other people. Social networks like Facebook have been designed to monetize our desire for human connection. In fact, social networks are deigned to turn our desire for connection into a compulsion.

The Architecture of nderground:
a social network built for privacy

Alice POS is an all-in-one retail POS for multi-site stores such as franchises, corporate buying groups, as well as individual stores.

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