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How Two Digital Nomads Launched The Fastest Growing Bitcoin Community In El Salvador

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Based on the number of merchants that now accept bitcoin in Berlin you might think this article is about the German capital city. Instead, it’s about a small picturesque mountain town in El Salvador with a population of 20,000 people.

How it came to have over 100 merchants accepting bitcoin in a 6 month period is an interesting story of persistence, passion and belief about bitcoin. It also is the story of an area whose inhabitants were proud of their beautiful city. The town in Germany may have many more inhabitants, but the lesser known Berlin has far more bitcoiners descending upon it every day than its much better known counterpart.

Magic Internet Money

It all begins with Gerardo Linares and his girlfriend Evelyn Lemus who were working as digital nomads in El Salvador for US companies for 10 years before they discovered bitcoin. Both are natives of ES and first heard about bitcoin when the country designated bitcoin as legal tender back in June 2021.

Like many of their countrymen, they were curious about bitcoin after the announcement and began going to meetups in San Salvador and El Zonte to learn more about this magic internet money. Like many, they downloaded the Chivo wallet and collected their $30 worth of bitcoin in September 2021 when the law took effect. The more they learned about this new global digital monetary network that allows you to be your own “decentral bank” the more they liked it.

They noticed that having bitcoin as legal tender in their country attracted many outside visitors and tourists who were bitcoiners to their country, but very few natives were adopting bitcoin outside of El Zonte and San Salvador. They wanted to change that, so they quit their digital nomad jobs and began a journey that resulted in them settling in Berlin which is a small mountain town about 2 hours east of San Salvador.

Sharing The Bitcoin Gospel

After learning more about Bitcoin’s impact and the opportunities it afforded to local communities, they wanted other Salvadoran natives to understand Bitcoin too. In the early stages of their journey they traveled to many smaller towns and villages in El Salvador and never missed a chance to educate the students in the local schools who wanted to learn about Bitcoin. They eventually teamed up with Mi Primer Bitcoin which is a bitcoin education company that began in El Salvador. As Cory Klippsten, CEO of Swan Bitcoin, has been saying for years, “To educate people on bitcoin is to market bitcoin.”

When I asked how many towns they visited in the country Gerardo said “21.” I’m not sure he caught the irony of his answer to my question since many bitcoiners consider 21 to be a special number. One of the places where they gave classes on bitcoin was in Berlin. They eventually decided to start their effort to develop a circular economy in this mountain town because the town officials took great pride in their community and were eager to attract tourists to the area.

Any time you want people to adopt new technology it is the first few early adopters which are the hardest, and Berlin was no exception. In the beginning, the two of them were able to on board 17 merchants via many one-on-one conversations and tutoring. These first Berlin merchants were open to this new payment rail [lightning network] because they wanted more tourism. In addition, another advantage they had in Berlin was that most of the merchants and shopkeepers were so small that they didn’t have employees, which means they could speak directly to the decision maker on the spot. There were no employees standing in their way as “middle men.” They also had the added advantage of Bitcoin being legal tender in their country. After the initial wave of 17 merchants more locals got involved in recruiting their fellow shop keepers. Gerardo and Evelyn were quick to credit the locals for the increased adoption. This wasn’t a success solely because of Bitcoin, however. They organized community supported clean-up projects that transformed the area and made it more appealing for locals and tourists alike.

Many of the merchants and shopkeepers in Berlin had heard of Bitcoin and most knew of the success in attracting tourists to El Zonte, which was a small surfing town 30 minutes outside San Salvador and about 3 hours away from Berlin. Another advantage of the shops in Berlin was that they accepted only cash (El Salvador had stopped issuing its own currency in 2001 at which time they made the US dollar their legal tender) and had no method for accepting digital payments, which means tourists were less likely to visit.

Challenges and Solutions

Some even had the Chivo wallet from when Bitcoin was first launched because that wallet was required to receive your $30 in bitcoin from the government. However, they found out quickly that the Chivo wallet defaulted to generating a QR code for US dollars NOT bitcoin. There was a way to accept bitcoin on the merchant’s Chivo wallet but it was not the default setting and it was NOT user friendly.

They needed to do a work around to get the Chivo wallet to accept Bitcoin which made it less than ideal. Most shops are small and were not yet accepting ANY FORM of electronic payments. Gerardo and Evelyn refer to Bitcoin as “electronic money” or “dinero electronico”. Accepting Bitcoin became the method for these shopkeepers and merchants to enter the digital age for payments, instantly creating a tourist destination for the many bitcoiners descending on El Salvador after the law was passed in 2021.

At first success was slow and only one or two shop owners were willing to try it. And when they made a sale in bitcoin they would often call Gerardo and ask him to convert the Bitcoin into USD. However, many have watched the price of Bitcoin skyrocket in 2023 and are now much more inclined to keep hold on to their Bitcoin. Gerardo and Evelyn eventually showed them how to use the Blink wallet because it was much more user friendly than the Chivo wallet and Blink has a stable sats feature that lets the shopkeeper avoid the volatility of Bitcoin.

Getting shopkeepers to accept Bitcoin was only half the equation though because they needed customers and no one in Berlin was paying in Bitcoin. The couple began inviting bitcoiners from El Zonte and San Salvador to Berlin. As these groups of Bitcoin visitors grew in size and frequency they made a point of organizing lunches and dinners at the restaurants where Bitcoin was accepted. It didn’t take long before other shop keepers noticed these large groups going to their competitors who accepted Bitcoin.

Gradually, then suddenly…

Gerardo explained that once they reached a tipping point of about 50 shops the whole need to recruit owners flipped. At that point, the shopkeepers and owners started coming to them and asking how to accept Bitcoin. He added that “people here in Berlin are excited about Bitcoin.” Recently, Gerardo and Evelyn opened a small office in Berlin where they teach people about Bitcoin for free and they teach the locals who want to learn English for a modest fee.

There is no doubt that the success and buzz created from El Zonte played an important role in adoption but there are now over 100 shops and merchants that accept Bitcoin in Berlin which Gerardo estimated represents about one quarter of the shops and businesses in town.

It is not without irony that I suggested to Gerardo during the interview that Berlin is the “fastest growing bitcoin community in El Salvador.” He seemed reticent about making that claim, but those are the facts. He made it clear there is still much more to do in educating the locals and building out the circular economy. I was surprised to learn they have a 15 page strategic plan for developing their new hometown into a global tourist destination which they wrote before they began. Their ultimate goal is for the project to be self-sustaining.

They have been so effective in putting the town of Berlin on the map that if you’re a Bitcoiner who lands in San Salvador you have a decision to make: “Do I head 30 minutes south to El Zonte or do I go east 2 hours to Berlin?” Do I want the beach [El Zonte] or the mountains [Berlin]?

In either case, there will be many merchants and shopkeepers in both who will happily accept your Bitcoin. Meanwhile, tourism continues to grow in El Salvador and circular economies are popping up in the unlikeliest of places. 

This is a guest post by Mark Maraia & Beren Sutton Cleaver. Opinions expressed are entirely their own and do not necessarily reflect those of BTC Inc or Bitcoin Magazine.

​ Two digital nomads living in El Salvador have kicked off a domino of ground up adoption of Bitcoin in the small mountain town of Berlin. 

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Russian State Duma Deputy Proposes Strategic Bitcoin Reserve

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Today, Russian state-owned domestic news agency, RIA Novosti, reported that State Duma Deputy Anton Tkachev proposed creating a strategic bitcoin reserve for Russia, claiming they have obtained a copy of the document.

Tkachev, from the New People party, sent the proposal to Russia’s Finance Minister, Anton Siluanov, to create a bitcoin reserve similar to Russia’s traditional currencies reserves.

“I ask you, dear Anton Germanovich, to assess the feasibility of creating a strategic reserve of bitcoin in Russia by analogy with state reserves in traditional currencies,” the document reportedly stated. “If this initiative is approved, I ask you to submit it to the government of the Russian Federation for further implementation.”

“In conditions of limited access to traditional international payment systems for countries under sanctions, cryptocurrencies are becoming virtually the only instrument for international trade. The Central Bank of Russia is already preparing to launch an experiment in cross-border settlements in cryptocurrency,” the document reportedly goes on to explain.

Tkachev’s document explains that creating a strategic Bitcoin reserve could enhance Russia’s financial stability, noting that traditional currency reserves such as the dollar, euro, and yuan are all subject to inflation and sanctions, and that a new alternative independent of any individual country is needed.

This development continues the trend of countries looking to build a strategic bitcoin reserve, including the United States, El Salvador, Brazil, Poland, and others. An initiative led by the United States and President-elect Donald Trump, the U.S. is looking to build a strategic bitcoin reserve of over 1 million bitcoin, which appears to have caught the attention of certain Russian officials.

Just five days ago, Russian president Vladimir Putin publicly stated that no one can ban or prohibit the use of Bitcoin, and that it will continue to develop. Earlier this year, Putin also signed a new law legalizing Bitcoin and cryptocurrency mining within the country.

 The document would see Russia create a bitcoin reserve similar to its traditional currency reserves. 

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Wabisabi Deanonymization Vulnerability “Disclosed”

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GingerWallet, the fork of WasabiWallet maintained by former zkSNACKs employees after the shut down of the Wasabi coinjoin coordinator, has received a vulnerability report from developer drkgry. This vulnerability would allow the total deanonymization of users inputs and outputs in a coinjoin round, giving a malicious coordinator the ability to completely undo any privacy gains from coinjoining by performing an active attack.

Wasabi 2.0 was a complete re-design of how Wasabi coordinated coinjoins, moving from the Zerolink framework utilizing fixed denomination mix amounts, to the Wabisabi protocol allowing dynamic multi-denomination amounts. This process involved switching from homogenous blinded tokens to register outputs to claim your coins back, to a dynamic credentials system called Keyed Verification Anonymous Credentials (KVACs). This would allow users to register blinded amounts that prevented theft of other users’ coins without revealing to the server plain-text amounts that could be correlated and prevent linking ownership of separate inputs.

When users begin participating in a round, they poll the coordinator server for information regarding the round. This returns a value in the RoundCreated parameters, called maxAmountCredentialValue. This is the highest value credential the server will issue. Each credential issuance is identifiable based on the value set here.

To save bandwidth, multiple proposed methods for clients to cross-verify this information were never implemented. This allows a malicious coordinator to give each user when they begin registering their inputs a unique maxAmountCredentialValue. In subsequent messages to the coordinator, including output registration, the coordinator could identify which user it was communicating with based on this value.

By “tagging” each user with a unique identifier in this way, a malicious coordinator can see which outputs are owned by which users, negating all privacy benefits they could have gained from coinjoining.

To my knowledge drkgry discovered this independently and disclosed it in good faith, but the members of the team who were present at zkSNACKs during the design phase of Wabisabi were absolutely aware of this issue.

“The second purpose of the round hash is to protect the clients from tagging attacks by the server, the credential issuer parameters must be identical for all credentials and other round metadata should be the same for all clients (e.g. to ensure that the server isn’t trying to influence clients to create some detectable bias in registrations).”

It was brought up in 2021 by Yuval Kogman, also known as nothingmuch, in 2021. Yuval was the developer to design what would become the Wabisabi protocol, and one of the designers in actually specifying the full protocol with ‪István András Seres‬.

One final note is the tagging vulnerability is not actually addressed without this suggestion from Yuval as well as full ownership proofs bound to actual UTXOs as proposed in his original pull request discussing tagging attacks. All of the data being sent to clients isn’t bound to a specific round ID, so a malicious coordinator is still capable of pulling a similar attack by giving users unique round IDs and simply copying the necessary data and re-assigning each unique round ID per-user before sending any messages. 

This is not the only outstanding vulnerability present in the current implementation of Wasabi 2.0 created by the rest of the team cutting corners during the implementation phase. 

 A major vulnerability in Wabisabi has been publicly revealed that would allow a malicious coordinator server to deanonymize users. 

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MicroBT Unveils New-Gen WhatsMiner M6XS++ Series at Bitcoin MENA 2024

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Abu Dhabi, December 9, 2024 – MicroBT, a world-leading Bitcoin ASIC manufacturer, has once again showcased its technological prowess and innovation-driven approach by introducing the latest WhatsMiner M6XS++ series at the Bitcoin MENA 2024 Conference in Abu Dhabi, UAE.

During the conference, Dr. Zuoxing Yang, the Founder and CEO of MicroBT, delivered a keynote address titled “Lead Great and Green Mining Forward.” In his speech, he unveiled advancements in solar power mining technology, highlighted the innovative heat utilization in hydro-cooling mining systems, and introduced the new WhatsMiner models.

The mining industry stands at a pivotal juncture, with green mining emerging as a forefront trend for the future. Dr. Yang emphasized the transformative potential of solar mining, predicting a significant reduction in electricity costs for solar power mining to approximately 3.4 cents USD per kWh by 2025. Furthermore, WhatsMiner’s groundbreaking high-temperature water outlet hydro-cooling technology is pushing the boundaries of comprehensive heat recovery. This technology enables the WhatsMiner hydro-cooling system to either minimize mining cooling needs or repurpose heat for advanced applications, such as industrial steam production, seawater desalination, and heating systems, thereby reinforcing MicroBT’s prominent position in the green mining sector.

Subsequently, Dr. Yang unveiled the latest generation of WhatsMiner products. The air-cooled M60S++ boasts a hashrate of up to 226 TH/s with a power efficiency of 15.5 J/T. The hydro-cooled M63S++ offers a hashrate of up to 478 TH/s, maintaining the same power efficiency of 15.5 J/T. The immersion-cooled M66S++, meanwhile, provides a hashrate of up to 356 TH/s, also with a power efficiency of 15.5 J/T.

Additionally, the WhatsMiner line includes the air-cooled M61S+ with a hashrate of up to 236 TH/s and a power efficiency of 17 J/T. The hydro-cooled M64S+ and M65S+ feature hashrates of up to 236 TH/s and 440 TH/s respectively, both with a power efficiency of 17 J/T. Notably, the outlet water temperature for both the M64S+ and M65S+ can reach up to 80°C.

In conclusion, Dr. Yang proudly announced MicroBT’s steadfast dedication to pioneering sustainable and eco-friendly mining practices, heralding a new era of green mining excellence and visionary leadership. With the unveiling of the latest WhatsMiner products, MicroBT stands poised and confident to decisively spearhead the green mining revolution.

 MicroBT Unveils New-Gen WhatsMiner M6XS++ Series at Bitcoin MENA 2024 

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