A criptomoeda Grin chegou ao mercado com uma proposta muito diferente das demais e por isso tem sido muito comentada. A Grin é nada mais, nada menos, do que uma implementação do protocolo MimbleWimble feita por desenvolvedores anônimos. Embora muitas pessoas fiquem com um pé atrás com projetos os quais seus desenvolvedores são anônimos, a Grin inova nessa questão, pois é uma moeda sem um “time oficial”, sem ICO, pre-mined ou qualquer coisa do tipo.

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Mas o que é o protocolo MimbleWimble?

MimbleWimble é um protocolo com foco em privacidade e escalabilidade muito similar as Transações Confidenciais, a principal diferença é que no MimbleWimble o destinatário de uma transação seleciona aleatoriamente um intervalo de “blinding factors” (que funciona como se fosse um “segredo”/ “senha”) para ser usado como prova de propriedade, isso é, uma prova de que as moedas são suas e portanto você pode ‘gastá-las’. Além disso, o protocolo MimbleWimble é conhecido pela simplicidade, um bloco consiste em uma lista de inputs, uma lista outputs, assinaturas e ! …

Bitcoin Cash, Bitcoin Gold, Bitcoin SV, Bitcoin Private, Litecoin, e assim vai… Atualmente temos no mercado inúmeros forks do Bitcoin, cada um deles promete resolver um suposto problema do Bitcoin, como por exemplo: Escalabilidade, privacidade, custo de transação, entre outros. …

Nesse artigo de hoje falarei sobre as novidades da Ethereum que estão por vir, muita gente está preocupada em ganhar dinheiro com um split, mas é importante saber o que é o Constantinople. Constantinople é um conjunto de 5 EIPs (Propostas de melhoria no Ethereum).

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  • EIP 145: Uma atualização técnica escrita por dois desenvolvedores ethereum, Alex Beregszaszi e Pawel Bylica, EIP 145 detalha um método mais eficiente de processamento de informações no ethereum conhecido como deslocamento bit a bit.
  • EIP 1052: criado pelo desenvolvedor do núcleo Nick Johnson e Bylica, o EIP 1052 oferece um meio de otimizar a execução de código em larga escala no ethereum. …

Recentemente fiz uma postagem no grupo Bitcoin Brasil questionando as habilidades de Satoshi Nakamoto como programador, afinal, se você analisar o primeiro código fonte do Bitcoin você perceberá que Satoshi não seguiu boas práticas de programação, práticas essas que um aluno de Ciência da Computação aprende no 1º Semestre.

A versão 0.1.0 do Bitcoin é basicamente um conjunto de funções, cheia de variáveis globais e sem organização nos arquivos. …

Many researchers have studied the impact of cryptocurrencies on the environment. According to estimates from Digiconomist, the power consumed by the entire Bitcoin network has been more than many countries like Peru, New Zealand, and Hungary. That’s comparable with CO2 emissions of 20 megatonnes — or roughly 1m transatlantic flights.

To understand the reason for these data presented it is important to understand what is Proof of Work.

Proof of Work is the algorithm that guarantees the consensus in the network (in the case of Bitcoin and other cryptocurrencies) through the solution of a cryptographic problem. …

If you follow the cryptocurrency ecosystem, you have almost certainly heard of “hard forks”, and more recently the discussions regarding the Bitcoin Cash hardfork.

What’s hardfork?

A hardfork, as it relates to blockchain technology, is a radical change to the protocol that makes previously invalid blocks/transactions valid (or vice-versa). This change requires all nodes or users to upgrade to the latest version of the protocol software. Put differently, a hard fork is a permanent divergence from the previous version of the blockchain, and the newest version will no longer accept data from nodes running earlier versions. …

The Nano protocol has been constantly improved by the developers. Nowadays, it is possible to run a Nano node on a $5/month server (DigitalOcean) easily. In this article, I will teach you how to run a Nano node on a $5/month server (DigitalOcean) but you can follow this tutorial on a Linux.

First of all, we should create a droplet on DigitalOcean. For this purpose, you should click on the green button “Create” and then, you should select the “Droplet” option to start the droplet configuration.

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In this tutorial, we will use the Ubuntu 18.04 x64 distribution. Also, we will install Docker by clicking on the “One-click apps” tab and selecting Docker. …

If you have been following the Nano project, you have almost certainly come across discussions regarding the Proof-of-Work required for transactions. While Nano uses a form of Delegated-Proof-of-Stake to reach consensus, the Proof-of-Work is still a key part of the network. Let’s take a look at what Proof-of-Work is, how it is used on the Nano network and possible improvements that can be made in the future.

What is Proof of Work?

In a Proof-of-Work (PoW) system, computers compete to solve advanced algorithms in order to verify cryptographic hashes. Proof-of-Work is an economic measure and can be used for a variety of reasons, typically to deter denial of service attacks or Sybil attacks by requiring some work from the service requester, usually meaning processing time by a computer. …

Hello everyone, recently many people have asked me about the future of Nano. They want to know what the developers are doing and which features will be implemented next.

So, if you want to follow the Nano Milestones, you should save this link: https://github.com/nanocurrency/raiblocks/milestones

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Nano milestones

In this page, you will able to see which features are being developed for the next versions, make sure the milestone is on schedule and check the developers’ interaction with the community.

By the end of the year we should see the launch of 4 new versions (17,18,19,20). …

Hello everyone, today I will talk about the importance of the pruning. There are a lot of people that do not know what is it and why it is so important for the decentralization.

According to the roadmap, the Ledger Pruning definition is:
“Ledger Pruning allows for a much smaller database size. This is done through pruning off blocks other than the frontier (head block) +1 or 2 previous for each account. This feature is dependent on Universal Blocks as they create a snapshot of an account on a per block basis requiring fewer blocks to verify an account.”

Watch the demonstration video about Ledger…

About

Bruno Garcia

Software Developer, Scientist & $NANO Community Manager

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