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Plasma has recently been interrupted as Ethereum Co-Founder, Vitalik Buterin, extolled the virtues of a technology that could help scale Ethereum “by a huge amount.” Privacy central zk-Snarks.

According to Buterin, you can actually scale asset transfer transactions on Ethereum by a huge amount, without using layer 2’s that introduce liveness assumptions (eg. channels, plasma), by using zk-Snarks to mass-validate transactions.

What is Ethereum?

Launched in 2015, Ethereum is a decentralized software platform that enables the revolutionary function of Smart Contracts and Distributed Applications (ĐApps) to be created without any downtime, fraud, control or interference from any third party. Ethereum has its own native programming language, helping developers to build and publish distributed applications. The potential applications of Ethereum are wide-ranging. Ethereum is the second biggest cryptocurrency after Bitcoin, but unlike Bitcoin, it allows other dApps to build on top of its blockchain.

Ethereum’s scaling problem

As the Ethereum ecosystem has expanded, it has become evident that there are serious limitations on the ability of the Ethereum blockchain to cope effectively and efficiently under high transaction demand.

This comes down to one simple fact: Ethereum, in its current state, does not – and importantly, cannot – scale.

Indeed, Vitalik Buterin proclaimed in June 2017 that “Ethereum’s scalability sucks.”

Buterin’s honesty highlights what is currently considered by many to be the largest barrier to Ethereum’s mainstream adoption: the inability to scale beyond 15-25 transactions per second.

Ethereum under pressure

Afri Schoedon recently tweeted that they were running Ethereum at capacity, instructing developers to stop deploying dApps to the network. Buterin disagreed with him, launching a staunch defense with replies to Schoedon’s tweet:

What exactly is zk-Snarks?

The acronym zk-Snarks stands for “Zero-Knowledge Succinct Non-Interactive Argument of Knowledge,” and refers to a proof construction where one can prove possession of certain information, e.g. a secret key, without revealing that information, and without any interaction between the prover and verifier.

zk-Snarks: the benefits

Security

zk-SNARKs maintains the security guarantees of on-chain computations. That is, you can still prove that you ran your programme or executed a certain smart contract in a trustless manner.

Layer 2 solution

zk-SNARK is considered a “layer 2” solution, which means that it could be implemented without altering the blockchain itself.

However, unlike other “layer 2” solutions, such as Plasma or Raiden, zk-SNARKs doesn’t require data to be held off-chain.

Speed

Despite its nascent form, the technology represents a promising route toward a more functional Ethereum network. Vitalik Buterin estimated that zk-SNARKs could bring the Ethereum network throughput from 15 to 500 transactions per second — an increase of over 30x. 

Published just now Snarknado! Have we found the answer to Ethereum’s scaling problem? | Planet Blockchain

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On 31st October 2018 Bitcoin turns 10! We look back at Bitcoin’s Journey from 2008 until the present day.

Bitcoin: How did it all begin?

On 31 October 2008 a person or group who went by the name of Satoshi Nakamoto published the whitepaper, titled ‘Bitcoin: A Peer-to Peer Electronic Cash System’.

Just over a few months later on 3 January 2009, the genesis block was released.  This was the starting point for the bitcoin blockchain on its path to becoming a revolutionary network for peer-to-peer transfers of value.

The first physical purchase of goods using Bitcoin

Laszlo Hanyecz is infamous amongst developers for the first physical purchase of goods using bitcoin in 2010. He paid 10,000 Bitcoin for pizza on May 22nd, 2010 just over a year after the first block of bitcoin was mined.

Given that 10,000 bitcoin would be worth more than £55m today, these would be the most expensive pizzas in history!

For some time, many people were spending thousands of bitcoin on insignificant items, even giving them as kudos on some forums.

Lightning Network: possible solution to Bitcoin’s problem of speed & scalability

On February 25th, 2018  Laszlo Hanyecz  repeated the transaction – this time paying just a fraction of a Bitcoin due to the gargantuan rise in the price of the first digital currency.

However, this time he used the Bitcoin Lightning Network, a “second layer” payment protocol operating on top of the Bitcoin blockchain to enable instant transactions. The Lightning Network is becoming a popular possible solution to Bitcoin’s problem of speed and scalability.

Bitcoin: a criminal’s best friend?

The majority of Bitcoin users are motivated by privacy concerns or plain curiosity. However, Bitcoin’s anonymity is also a powerful tool for financing crime

The rapid growth in cryptocurrencies and the anonymity that they provide users has created considerable regulatory challenges, including the use of cryptocurrencies in illegal trade (drugs, hacks and thefts, illegal pornography, even murder-for-hire), potential to fund terrorism, launder money, and avoid capital controls. 

Bitcoin mining uses a lot of energy!

It is well-established established that Bitcoin mining uses a lot of energy.
The bitcoin network is run by miners, computers that maintain the shared transaction ledger called the blockchain. A new study estimates that this process consumes at least 2.6GW of power—almost as much electric power as Ireland consumes. This figure could rise to 7.7GW before the end of 2018—accounting for almost half a percent of the world’s electricity consumption.

However, Bitcoin’s high energy use is a problem that, to some extent, will resolve itself over time. The bitcoin network is programmed to reduce the block reward by 50 percent every four years, with the next halving scheduled to happen in mid-2020. When that happens (assuming a constant bitcoin price) the mining industry’s revenue will fall in half. In equilibrium that should mean that energy use falls by half as well. Energy use should halve again in 2024, 2028, and so forth—though that could be offset by further gains in bitcoin’s price.

Bitcoin turns 10: milestones over the last decade

As Bitcoin turns 10, we look at some of the main milestones reached over the last decade.

October 31, 2008  – The white paper is published

Nakamoto publishes a design paper through a metzdowd.com cryptography mailing list that describes the Bitcoin currency and solves the problem of double spending so as to prevent the currency from being copied. January 3, 2009

January 3, 2009 –  Genesis Block is mined

Block 0, the genesis block, is established at 18:15:05 GMT. January 12, 2009

January 12, 2009 – First Bitcoin transaction

The first transaction of Bitcoin currency, in block 170, takes place between Satoshi and Hal Finney, a developer and cryptographic activist. October 5, 2009

October 5, 2009 – An exchange rate is established.

New Liberty Standard publishes a Bitcoin exchange rate that establishes the value of a Bitcoin at US$1 = 1,309.03 BTC, using an equation that includes the cost of electricity to run a computer that generated Bitcoins. May 22, 2010

May 22, 2010 – 10,000 BTC is spent on pizza!

The first, real-world transaction using Bitcoins takes place when a Jacksonville, Florida programmer, Laszlo Hanyecz, offers to pay 10,000 Bitcoins for a pizza on the Bitcoin Forum. At the time, the exchange rate put the purchase price for the pizza July 12, 2010

July 12, 2010 – Bitcoin value increases tenfold

Over a five day period beginning on July 12, the exchange value of Bitcoin increases ten times from US$0.008/BTC to US$0.080/BTC.

November 6, 2010 – Market cap exceeds $1 million USD.

Calculated by multiplying the number of Bitcoins in circulation by the last trade on MtGox, the Bitcoin economy exceeds US$1 million. The price on MtGox reached US$0.50/BTC. January 28, 2011

2011 – The year other cryptocurrencies start to emerge

This is the year the first alternative cryptocurrencies appear. Sometimes known as altcoins, these generally try to improve on the original Bitcoin design by offering greater speed, anonymity or some other advantage. Among the first to emerge were Namecoin and Litecoin. Today, there are over 1,000 cryptocurrencies in circulation with new ones frequently appearing.

January 28, 2011 –  25% of total Bitcoins generated

With the generation of Block 105000, 5.25 million Bitcoins have been generated, totalling more than 25 percent of the projected total of almost 21 million. February 9, 2011

February 9, 2011 – Bitcoin reaches parity with US dollar

Bitcoin touches US$1.00/BTC at MtGox, reaches parity with the US dollar for the first time. August 20, 2011

March 28, 2013 – Market cap reaches $1 billion.

The total Bitcoin market cap passes US$1 billion. May 2, 2013

May 2, 2013 – First Bitcoin ATM unveiled.

The first Bitcoin ATM in the world is debuted in San Diego, California. November 19, 2013

November 19, 2013 – Bitcoin goes above $1000.

Bitcoin price surges to a record of US$1242 after Senate hearings.

September, 2015 – Bitcoin now a commodity

Bitcoin is a commodity according to The Commodity Futures Trading Commission.

December, 2016 – Bitcoin enjoys end of year price surge

Bitcoin enjoys end of year price surge and hits a three-year high with each one now worth about $900.

January 2, 2017 – Bitcoin Tops $1,000 for first time in 3 years

Bitcoin tops $1,000 for first time in three years as 2017 trading begins.

March 1, 2017 – Value of 1 bitcoin surpassed the spot price of an ounce of gold for the first time. April 1, 2017 – Bitcoin legal payment in Japan

Japan passed a law to accept bitcoin as a legal payment method.

June 12, 2017 – Bitcoin reaches all time high

Bitcoin reaches an all-time high of $3,000.

August 1, 2017- Bitcoin Cash is born

Bitcoin Cash is born and bitcoin crosses $4000.

August 23, 2017  Segwit activates on Bitcoin.

A huge milestone in the development of Bitcoin.

“The activation of segregated witness is a huge milestone in the development of Bitcoin. A step which enables a literal explosion of cool new features enhancing scalability, fungibility, privacy and usability of our favourite money,” said the hosts of the SegWit activation party.

November 28, 2017 – Bitcoin Hits $10,000

Bitcoin hits $10,000 for the very first time, 10x since starting the year at $1000.

April 2018 – Only 4 million Bitcoin left to mine

There are now 17 million bitcoins in existence only 4 million left to mine.

September 2018 – Bitcoin trading consistently

Since early September 2018 Bitcoin has traded consistently at around $6,500, only ever fluctuating by a few hundred dollars.

This trend has been helped by a lack of destabilising news in the cryptocurrency space, together with broader consensus on how to address some of the technological challenges facing bitcoin.

Bitcoin Turns 10: conclusions

As Bitcoin turns 10,  it has had its ups and downs. And since bitcoin’s inception nearly a decade ago, more than 3,000 other cryptocurrencies have emerged. However, of these, only a handful have actually managed to have any significant impact, and none have managed to reach the same heights as bitcoin.

Throughout regulatory pressures, technical difficulties, the cryptocurrency has remained at the forefront of the Blockchain revolution. Will Bitcoin replace fiat currency in another decade? Unlikely. But anything is possible!

Published just now Bitcoin Turns 10: The Rollercoaster Journey So Far! | Planet Blockchain

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Stablecoins – aptly named cryptocurrencies designed to be more market-stable and heralded as a way to strengthen the commercial case for blockchains.

In this post, we will evaluate two stablecoins, Tether vs Dai. Called the “holy grail” of cryptocurrency, stablecoins are an exiting proposition for  many businesses who often shy away from the volatility associated with the sector.

What is a stablecoin?

Stablecoins, in their most ideal form, are simply cryptocurrencies with stable value. An optimal cryptocurrency should have the following: price stability, scalability, privacy, and decentralization. A “stablecoin” is a cryptocurrency that is backed by a fiat currency reserve which corresponds with the coins in circulation. Usually, a stable coin is pegged to U.S. dollar but is not tied to a central bank and has low volatility.

This makes the usage of a cryptocurrency as a medium of exchange more viable since the price of a stablecoin should relatively unchanging; being the representation of a known amount of an asset.

Compare this to non-stable cryptocurrencies like Bitcoin and Ethereum; these are highly volatile, and on any given day, it is common to see a fluctuation of 10-20%, making the usage of most cryptocurrencies for daily transactions inconvenient at best, or impossible at worst.

The main types of stablecoins

There are various types of stablecoins in the cryptocurrency market, which can be divided into three main categories, as follows:

  1. Fiat-collateralized – this is the simplest method of creating a stablecoin, and is used by one of the top stablecoins today (Tether). Essentially, fiat-collateralized stablecoins are backed by a real-world asset. This real-world asset is controlled and owned by a central entity.
  2. Crypto-collateralized – these are similar in concept to fiat-collateralized stablecoins, except that crypto-collateralized stablecoins are backed by another cryptocurrency as opposed to being backed by a real-world asset.
  3. Non-collateralized (i.e. seigniorage shares) –  the main non-collateralized approach is the seigniorage shares method. The seigniorage shares method uses smart contracts that automatically expand and contract the supply of the non-collateralized stablecoin using algorithms to maintain its value.
Who issues stablecoins?

Stablecoins are issued either by a central authority or a Decentralized Autonomous Organization (DAO). A central authority behind a stablecoin is Tether which issues new coins based on the guarantee provided, allowing for more stablecoins to enter in circulation if the reserve increases. The benefit of using a DAO rather than a centralised issuer is that DAOs allow for additional transparency if done in a decentralized manner. Dai is an example of a DAO stablecoin and runs on the Ethereum network.

Tether vs Dai: what you need to know Tether: stablecoin pegged to the US Dollar

Tether was launched as RealCoin in July 2014 and was rebranded as Tether in November 2014.

Tether is the best-known stablecoin and often the most traded crypto asset after bitcoin. However, it is a highly controversial stablecoin, not because of how it works, but due to questions over whether it’s actually dollar-backed with fiat reserves.  What’s undisputed is that over-reliance on a centralized coin that accounts for $4 billion of daily trade volume is a bad thing.

The concept of Tether is simple, on paper at least. For every tether that exists there is a US dollar, meaning the value of one tether should always match one dollar. This is a centralised IOU model, whereby the central issuer (Tether the company) holds the US dollars on behalf of the users to uphold the value of tether and provide price stability.

But tether has been shrouded in controversy ever since questions were raised about whether Tether had the billions of US dollars in the bank to back up the billions of tether in issue. The company dismissed its first auditors and, although it insists it is fully audited, the evidence produced so far has been unconvincing. There is major doubt that it has the $2.7 billion to match the 2.7 billion tethers in circulation and that the stablecoin is being pumped out with artificial value just to prop up the prices of other cryptocurrencies. Supporting this is the fact that, while exchanging dollars for tether is easy enough, swapping your tether back into dollars is thought to be considerably harder. The company has stated on several occasions that it was unable to convert any tethers into dollars. Although some argue this sets off warning sirens about how much dollar it has in the bank, others say it is because it wants people to exchange their tether into other cryptocurrencies, like bitcoin, and then convert that into fiat currency.

Tether is a great example of the highs and lows that the crypto community endures. The idea of injecting crypto power into fiat currency is welcome. However, all of its problems stem from the fact it is centralised. Users have to trust Tether that it has the money it says it does and that it will facilitate the transactions on the network and, so far, Tether is yet to earn its badge of trust.

Dai: decentralised stablecoin built on Ethereum

With the above in mind, competition for Tether is to be encouraged. And it arrived on 18th December 2017, when MakerDAO announced the launch of their Dai stablecoin. 

Dai is a decentralized dollar-pegged stablecoin from MakerDAO that operates as an ethereum token. The buyer places ethereum in the Maker core smart contract and receives a dollar equivalent of Dai in return. It’s tradable on the likes of Bibox, Ethfinex, IDEX, and Bancor Network.

With all of Tether’s problems spawning from the fact it is centralised this stablecoin could be a game changer. Dai is a decentralised cryptocurrency that is built around Ethereum, a much larger cryptocurrency that is centred on smart contracts to make it stand out from other top cryptocurrencies like Bitcoin.

Ethereum is used as collateral to support the price of Dai. The Ethereum is held in a smart contract, which means there is not a need for a central authority to hold it on behalf of the users.

According to MakerDAO,  the age of stability has arrived.  However, Dai is not free from problems. It may be decentralised but the underlying asset that gives Dai its value is nowhere near as stable as the fiat currencies like the dollar.

Tether vs Dai stablecoins: final thoughts

The 3 key characteristics of cryptocurrencies are that they are trustless, immutable, and decentralized.  Tether has done nothing to convince the crypto community that a centralised cryptocurrency is the way forward. If part of cryptocurrencies is shutting the door to so-called opaque and dishonest banks then the very least a centralised cryptocurrency has to do is prove it can be more transparent and do a better job at managing people’s money.

Dai wins points for being decentralized but the foundation it is built on – the thing that gives this stablecoin its stability – is itself not free from volatility.  Its fate is in the hands of Ethereum.

Published just now Battle of the stablecoins: Tether vs Dai | Planet Blockchain

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Sidechains are an emerging technology that allows tokens, coins and other digital assets from one blockchain to be used in an entirely separate blockchain, securely, and then be moved back to the original blockchain if needed.

How Do Sidechains Work?

A sidechain is a separate blockchain, attached to a parent via a two-way peg. This enabled the interchange slitty of assets between the blockchains. The original, parent blockchain is referred to as the ‘main chain’ and any child blockchains are referred to as ‘sidechains’, however some such as Ardor refers to them as ‘childchains’.

The first step in transferring digital assets, is for a user to transfer their assets (such as coins) to an output address where they are locked and cannot be spent. Once that transaction is completed, a confirmation is sent across the Cains, followed by a brief waiting period for additional security. After that period has expired, an equivalent amount of assets are released on the sidechain, allowing the user to spend them there. The same happens in reverse, when transferring back to the main chain.

What’s The Point

Sidechains allow cryptocurrencies developers to test beta versions of alt coins or software updates on a blockchain before pushing them to the main chain. Things like issuing and tracking share ownership can be tested on sidechains before moving them to main chains. They also allow cryptocurrencies to interact with one another.

Sidechains also allow newer technologies and ideas to be present on older cryptocurrencies. For example, Bitcoin lacks turing-complete smart contract abilities; however side chains can enable that feature. See about Rootstock below.

Examples Of Sidechains Liquid

Liquid is a commercial sidechain.  If facilitates immediate transfer of funds between exchanges without having to wait for the delay of confirmation in the Bitcoin Blockchain. Liquid is available to users of all participating Bitcoin exchanges.

Rootstock

As mentioned, Bitcoin lacks turing-complete smart contract abilities; however Rootstock is a smart contract platform sidechain with a two-way peg to Bitcoin. This means that effectively Bitcoin minders can participate in the smart contract revolution by reading them with merge-mining.

Conclusion

Sidechains are an exciting new technology in the cryptocurrency space, although they are not without their security concerns. I do think the possibilities of expanding existing currencies like Bitcoin through the addition of new ideas such as smart contracts will aid scalability in the old cryptocurrencies and prolong their live.

As with all cyrptocurrencies, the side chains that succeed will be those that are made to fill a niche, not ones that are used to generate an income and therefore I foresee  side chains with no coin themselves, such as Rootstock, taking off.

Published just now Sidechains: Everything You Need To Know | Planet Blockchain

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The last few weeks have been pretty exciting for us at Planet Blockchain. With Coinbase proposing to list 3 of our top currencies, we’ve been working hard on our own contribution to the cryptocurrency space.

A real pain point for us when using Cardano was having to use Daedalus and sync it with the blockchain. This takes ages and is prone to require restarting Daedalus, and/or your computer! No thank you! Even when you achieve the Nirvana state of a sync’ed Daedalus, you now have to input your 12 secret words, aka your private key, to restore your wallet. If you’re not on a device you own and trust then this is obviously not an option. The owner of the device, or, heaven forbid, website, you enter your 12 secret words into has the ability to take all your funds, if they want to. They might do it instantly, they might do it tomorrow, or they might do it in a years time.

So what’s the solution?

A light wallet, or mobile wallet, where the only information you put into the wallet is your public address, or addresses. There is absolutely no way to take someone’s funds just from their address, which makes this a secure solution to looking up your balance. Many of these solutions exist for popular currencies like Bitcoin. If only there was one for Cardano.

Luckily for you, dear reader, we’ve built one.

Once you’ve set up your wallet through Daedalus, you can copy and paste your addresses into the mobile wallet in order to track your balance(s). Make sure to always protect your back up phrase for your wallet and never share it with anyone. Including us, and any other wallet software.

Check out the app and let us know what you think

                           

We at Planet Blockchain are super excited by Cardano and the cryptocurrency space in general and commit to bringing you the highest integrity information on the topics we care about the most. Thank you for being part of our small community and we hope you enjoy the app. You can read more about it here.

Published just now Finally! A Cardano Mobile Wallet! | Planet Blockchain

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Cryptocurrencies are saving lives

Thanks to cryptocurrency and kindness, poor families in Venezuela can buy food. First, it was Bitcoin Cash helping feed the poor in Venezuela. And now its the turn of Nano.

The Nano donations were gifted by kind Reddit users to help Venezuelan families buy much-needed food. Venezuela is among the world’s poorest countries even though it has the largest proven oil reserves in the world.   87% of its people live in poverty.  Its population is 32.3 million. That means around 28 million people living in poverty.

This heartwarming tale of kindness, hope and cryptocurrency began when a Reddit user from Venezuela called Hector received a 0.5 Nano donation from another Reddit user. This is equivalent to an entire month’s salary in this poverty stricken South American country.

For those of you who are unfamiliar with Nano, it is a cryptocurrency project that focuses on instant and feeless transfers for day-to-day transactions. Nano is based on a different structure to bitcoin called a DAG.  It was designed as a ‘digital currency for the real world’ and this is a perfect example of what the cryptocurrency set out to achieve.

Hector created a thread in /r/nanocurrency called “Got my first 0.5 NANO – venezuelan user” to share his experience about the Nano donations. As a result, more people started to send more Nano donations to his cryptocurrency wallet and it snowballed!

One week later, Hector was able to buy even more food to help others in the wider community. He bought 102 kgs (224 lbs) of food and donated it amongst his friends and neighbours as well as his family.

And only a few days ago he exchanged 61 NANO for 300 kgs of food with a different supplier. As a result, 40 more families benefited from the donations and were able to buy much needed food.

Nano donations life-changing

Hector described the reaction he received when he told people about the Nano donations as “amazing”. What’s even more amazing is the fact that so many of them actually know what cryptocurrencies are. Others were sceptical or indifferent and were only interested in the food. However, when Hector told them about how the Nano donations were helping them buy the food they were overjoyed.

At the time of writing a total of 90,1 NANO has been invested (equivalent to $230 at the time of the investment) in 402 kilograms (884,2 lbs) of food.

Adopt A Family Nano Project

The project launched in /r/nanocurrency is called Adopt a family  It will focus on helping Venezuelan families by means of Nano donations.

It is a fabulous and heartwarming initiative.  So many families are benefiting from the project. Hector hopes hundreds more families will also benefit from it. And in turn, Nano will become more familiar among the Venezuelan population and cryptocurrencies in general.

Long live Nano!

Published just now Nano is changing the world and Venezuela is next | Planet Blockchain

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Nano donations gifted by altruistic Reddit users have recently helped Venezuelan families buy food. It all began when a Reddit user from Venezuela called Hector received a 0.5 Nano donation from another Reddit user. This is equivalent to an entire month’s family in the poor South American country.
For those of you who are unfamiliar with Nano, it is a cryptocurrency project that focuses on instant and feeless transfers for day-to-day transactions. It was designed as a ‘digital currency for the real world’ and this is a perfect example of what the cryptocurrency set out to achieve.
Got My First 0.5 Nano – Venezuelan User

Hector subsequently created a thread in /r/nanocurrency called “Got my first 0.5 NANO – venezuelan user” to share his experience about the Nano donations. As a result, more people started to send more Nano donations to his wallet.

Just a week later, he was able to buy more food to help others. He bought 102 kgs (224 lbs) of food and donated it amongst his friends, neighbours and family.

And only a few days ago he exchanged 61 NANO for 300 kgs of food with a different supplier. As a result, 40 more families benefited from the donations.

Reaction to Nano Donations Amazing

Hector described the reaction he received when he told people about the Nano donations as “amazing”. What’s even more amazing is the fact that so many of them actually know what cryptocurrencies are. Others were sceptical or indifferent and were only interested in the food. However, when Hector told them about how the Nano donations were helping them buy the food they were overjoyed.

At the time of writing a total of 90,1 NANO has been invested (equivalent to $230 at the time of the investment) in 402 kilograms (884,2 lbs) of food.

Adopt A Family Nano Project

The project launched in /r/nanocurrency is called Adopt a family  It will focus on helping Venezuelan families by means of Nano donations.

It is a fabulous and heartwarming initiative.  So many families are benefiting from the project. Hector hopes hundreds more families will also benefit from it. And in turn, Nano will become more familiar among the Venezuelan population and cryptocurrencies in general.

Published just now Nano Donations By Reddit Users Help Venezuelan Families Buy Food | Planet Blockchain

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