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What is a TREZOR

TREZOR is a hardware wallet

TREZOR is a hardware wallet providing advanced security for handling bitcoin private keys.
Unlike traditional cold storage methods (offline storage or paper wallet), TREZOR is able to make secure payments without exposing your private keys to a potentially compromised computer.

TREZOR is basically a small computer. It is designed to protect your private keys from possible online and offline risks. In order to do this, TREZOR keeps the private keys away from the Internet and confirms the transactions in-device. That way you can always check the screen for the right address, amount and transaction fee before sending your bitcoins.
In layman’s terms you can connect TREZOR to an infected computer and still be able to have 100% control over the funds in your device.

What is a Ledger?

Ledger Nano is a Bitcoin wallet on a smartcard device, small format and low weight. Comfortable and simple to use, you connect it directly to a USB port to manage your account, protect your bitcoins and make safe payments

When you own bitcoins, storing and protecting them is your own responsibility. The Ledger Nano is accessible to all, and secured thanks to highest banking industry standards. Your account can be backed up and restored if your Nano is lost or stolen. You can use your Ledger Nano on any computer, PC, Mac or Linux. Anybody can install and use it without technical skills.

Hardware wallets are probably the most robust form of security you can have for your Bitcoins or any other cryptocurrency. They allow you to send and receive Bitcoins on any computer, even one that is compromised with malware, with the knowledge that your transaction will still go through as intended.

The way the hardware wallets achieve maximum security is by storing your private key and signing your Bitcoin transactions offline so someone trying to hack your wallet remotely won’t be able to do so. Most hardware wallets also use a second screen/device to verify actions on your wallet such as signing transaction. This way, if a hacker gains control over your computer, he still can’t do any harm since he requires access to the physical device connected to your computer as well.

Ledger Wallet protects your bitcoins

How to carve a pumpkin?

Pumpkin carving is a fun Halloween tradition that’s popular among both children and adults. To carve your own pumpkin, you’ll first need to purchase or pick one from a local farmer’s market or pumpkin patch. Make a clean workspace to do the carving in, and trace or draft your design on the side of the pumpkin before you begin cutting. Remember also that you’ll need to scoop out all of the seeds from the pumpkin’s interior. Make sure to keep knives away from young children, and supervise older children who want to cut their own pumpkin.

Source: Wikihow

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What is Bratva?

Russian organized crime or Russian mafia

 rossiyskaya mafiya, sometimes referred to as Bratva ( brotherhood), is a collective of various organized crime elements originating in the former Soviet Union.

Organized crime in Russia began in the imperial period of the Tsars, but it was not until the Soviet era that vory v zakone (thieves-in-law) emerged as leaders of prison groups in gulags (Soviet prison labor camps), and their honor code became more defined. After World War II, the death of Joseph Stalin, and the fall of the Soviet Union, more gangs emerged in a flourishing black market, exploiting the unstable governments of the former Republics, and at its highest point, even controlling as much as two-thirds of the Russian economy. Louis Freeh, former director of the FBI, said that the Russian mafia posed the greatest threat to U.S. national security in the mid-1990s.

In modern times, there are as many as 6,000 different groups, with more than 200 of them having a global reach. Criminals of these various groups are either former prison members, corrupt officials and business leaders, people with ethnic ties, or people from the same region with shared criminal experiences and leaders. However, the existence of such groups has been debated. In December 2009, Timur Lakhonin, the head of the Russian National Central Bureau of Interpol, stated Certainly, there is crime involving our former compatriots abroad, but there is no data suggesting that an organized structure of criminal groups comprising former Russians exists abroad, while in August 2010, Alain Bauer, a French criminologist, said that it is one of the best structured criminal organizations in Europe, with a quasi-military operation.

Source: Wikipedia

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What is cryptocurrency?

A cryptocurrency (or crypto currency) is a digital asset

Cryptocurrency is designed to work as a medium of exchange using cryptography to secure the transactions and to control the creation of additional units of the currency

Cryptocurrencies are classified as a subset of digital currencies and are also classified as a subset of alternative currencies and virtual currencies.

Bitcoin became the first decentralized cryptocurrency in 2009. Since then, numerous cryptocurrencies have been created. These are frequently called altcoins, as a blend of bitcoin alternative. Bitcoin and its derivatives use decentralized control as opposed to centralized electronic money/centralized banking systems. The decentralized control is related to the use of bitcoins blockchain transaction database in the role of a distributed ledger.

Source: Wikipedia

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What is Blockchain?

A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography

Each block contains typically a hash pointer as a link to a previous block, a timestamp and transaction data. By design, blockchains are inherently resistant to modification of the data. Functionally, a blockchain can serve as an open, distributed ledger that can record transactions between two parties efficiently and in a verifiable and permanent way. For use as a distributed ledger a blockchain is typically managed by a peer-to-peer network collectively adhering to a protocol for validating new blocks. Once recorded, the data in any given block cannot be altered retroactively without the alteration of all subsequent blocks and a collusion of the network majority.

Blockchains are secure by design and are an example of a distributed computing system with high Byzantine fault tolerance. Decentralized consensus has therefore been achieved with a blockchain. This makes blockchains potentially suitable for the recording of events, medical records, and other records management activities, such as identity management, transaction processing, documenting provenance, or food traceability.

The first distributed blockchain was conceptualised by Satoshi Nakamoto in 2008 and implemented the following year as a core component of the digital currency bitcoin, where it serves as the public ledger for all transactions. The invention of the blockchain for bitcoin made it the first digital currency to solve the double spending problem, without the use of a trusted authority or central server. The bitcoin design has been the inspiration for other applications.

Source: Wikipedia

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Where is Mumbai?

Mumbai is the capital city of the Indian state of Maharashtra

It is the most populous city in India and the ninth most populous agglomeration in the world, with an estimated city population of 18.4 million. Along with the neighbouring regions of the Mumbai Metropolitan Region, it is one of the most populous urban regions in the world and the second most populous metropolitan area in India, with a population of 21.3 million as of 2016. Mumbai lies on the Konkan on the west coast of India and has a deep natural harbour.

In 2008, Mumbai was named an alpha world city. It is also the wealthiest city in India, and has the highest GDP of any city in South, Western, or Central Asia. Mumbai has the highest number of millionaires and billionaires among all cities in India.

The seven islands that came to constitute Mumbai were home to communities of fishing colonies of the Koli people. For centuries, the islands were under the control of successive indigenous empires before being ceded to the Portuguese Empire and subsequently to the East India Company when in 1661 Charles II of England married Catherine of Braganza and as part of her dowry Charles received the ports of Tangier and Seven Islands of Bombay. During the mid-18th century, Bombay was reshaped by the Hornby Vellard project, which undertook reclamation of the area between the seven islands from the sea. Along with construction of major roads and railways, the reclamation project, completed in 1845, transformed Bombay into a major seaport on the Arabian Sea. Bombay in the 19th century was characterised by economic and educational development. During the early 20th century it became a strong base for the Indian independence movement. Upon Indias independence in 1947 the city was incorporated into Bombay State. In 1960, following the Samyukta Maharashtra Movement, a new state of Maharashtra was created with Bombay as the capital.

Source: Wikipedia

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What is the Hajj?

The Hajj is an annual Islamic pilgrimage to Mecca, the most holy city for Muslims

The Hajj is a mandatory religious duty for Muslims that must be carried out at least once in their lifetime by all adult Muslims who are physically and financially capable of undertaking the journey, and can support their family during their absence

It is one of the five pillars of Islam, alongside Shahadah, Salat, Zakat, and Sawm. The Hajj is the largest annual gathering of people in the world. The state of being physically and financially capable of performing the Hajj is called istitaah, and a Muslim who fulfills this condition is called a mustati. The Hajj is a demonstration of the solidarity of the Muslim people, and their submission to God (Allah). The word Hajj means to intend a journey, which connotes both the outward act of a journey and the inward act of intentions.

The pilgrimage occurs from the 8th to 12th (or in some cases 13th) of Dhu al-Hijjah, the last month of the Islamic calendar. Because the Islamic calendar is lunar and the Islamic year is about eleven days shorter than the Gregorian year, the Gregorian date of Hajj changes from year to year. Ihram is the name given to the special spiritual state in which pilgrims wear two white sheets of seamless cloth and abstain from certain actions.

The Hajj is associated with the life of Islamic prophet Muhammad from the 7th century, but the ritual of pilgrimage to Mecca is considered by Muslims to stretch back thousands of years to the time of Abraham. During Hajj, pilgrims join processions of hundreds of thousands of people, who simultaneously converge on Mecca for the week of the Hajj, and perform a series of rituals: each person walks counter-clockwise seven times around the Kaaba (the cube-shaped building and the direction of prayer for the Muslims), runs back and forth between the hills of Safa and Marwah, drinks from the Zamzam Well, goes to the plains of Mount Arafat to stand in vigil, spends a night in the plain of Muzdalifa, and performs symbolic stoning of the devil by throwing stones at three pillars. The pilgrims then shave their heads, perform a ritual of animal sacrifice, and celebrate the three-day global festival of Eid al-Adha.

Source: Wikipedia

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Where is Mecca?

Mecca or Makkah is a city in Saudi Arabia

The city is located 70 km (43 mi) inland from Jeddah in a narrow valley at a height of 277 m (909 ft) above sea level, and 340 kilometres (210 mi) south of Medina. Its resident population in 2012 was roughly 2 million, although visitors more than triple this number every year during the hajj (pilgrimage) period held in the twelfth Muslim lunar month of Dhu al-Hijjah.

As the birthplace of Muhammad and the site of Muhammads first revelation of the Quran (specifically, a cave 3 km (2 mi) from Mecca), Mecca is regarded as the holiest city in the religion of Islam and a pilgrimage to it known as the Hajj is obligatory for all able Muslims. Mecca is home to the Kaaba, by majority description Islams holiest site, as well as being the direction of Muslim prayer. Mecca was long ruled by Muhammads descendants, the sharifs, acting either as independent rulers or as vassals to larger polities. It was conquered by Ibn Saud in 1925. In its modern period, Mecca has seen tremendous expansion in size and infrastructure, home to structures such as the Abraj Al Bait, also known as the Makkah Royal Clock Tower Hotel, the worlds fourth tallest building and the building with the third largest amount of floor area. During this expansion, Mecca has lost some historical structures and archaeological sites, such as the Ajyad Fortress. Today, more than 15 million Muslims visit Mecca annually, including several million during the few days of the Hajj. As a result, Mecca has become one of the most cosmopolitan cities in the Muslim world, even though non-Muslims are prohibited from entering the city.

Source: Wikipedia

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