Selected articles for topic: bitcoin india exchange
→ 162 articles
Check also 85 Videos for this topic
List Of Cryptocurrencies in India Best to Invest ...
List Of Cryptocurrencies in India Best to Invest
List Of Cryptocurrencies in India Best to Invest
By
Tweet on Twitter
After extreme variations in bitcoin price, everyone is getting interested in the topic of cryptocurrencies! But apart from bitcoin, there are more than 900 cryptocurrencies in the world. Even you can create your own cryptocurrency. Now you might be thinking if there are 900...
Website:
https://technoclever.com
Best 5 Bitcoin Companies in India to Safely Invest
As the digital currency enjoys its fame let us gaze through the top five Bitcoin companies in India that are considered to be the best.
BTCXIndia
6 Related
BTCXIndia is owned by S Capital Solutions Ltd and the funding of the company is done by an angel investor based in UK. The customers of BTCXIndia can buy and sell bitcoins for Indian currency and withdraw and deposit Indian rupees instantly....
Website:
https://wiredreach.org
All about bitcoins | India Bitcoin
How to buy, send and invest in the digital currency
How do people use bitcoins?
It is an electronic or digital currency that works on a peer-to-peer basis. This means that it is decentralised and has no central authority controlling it. Like currency notes, it can be sent from one person to another, but without a central bank or the government attempting to track it. The system depends on...
Website:
http://www.indiabitcoin.com
Bitcoin- What is It? and How to buy Bitcoin in India
Bitcoin- What is It? and How to buy Bitcoin in India
: 231
Posted By :- shreyg
Posted By :- shreyg
Bitcoin is a form of currency which is very new to this world of economy. Although it was invented in 2009 by an unknown entity who was also known as Satoshi Nakamoto. So basically it's a form of unique cryptocurrency and a mode of e payment or digital mode of payment. It is also been called as the...
Website:
https://developingdaily.com
Purchasing Bitcoins in India – coinswitch
Bitcoin is a worldwide cryptocurrency and digital peer to peer payment system. The transactions are verified by network nodes and recorded in a public distributed ledger called a blockchain.
In this article we would discuss on how to purchase Bitcoins using INR in India.
Zebpay is a major bitcoin exchange in India and you can easily purchase bitcoins using your bank account,
Here is the step by...
Website:
https://blog.coinswitch.co
Related topics : buy bitcoins instantly bank account / buy bitcoin instantly with bank account / purchase bitcoins india / buy bitcoin exchange india / buy bitcoins with bank account us
Bitcoin breaches $10,000 mark; should you still bother to ...
Warren Buffet last month called bitcoin as a real bubble. In September this, JPMorgan Chase, Chief Executive Officer Jamie Dimon called bitcoin "Fraud" "worse than tulip bulbs." But, not just individuals but even countries seems to be divided on this issue. Firstpost spoke to K. Vaidyanathan, Lecturer Finance at India School of Business regarding bitcoin and crypto-currency in general.
According...
Website:
http://www.firstpost.com
Introduction to Bitcoin, and the taxation of Bitcoin in India
One of the key aspects of bitcoin is the distributed ledger system called the block chain which controls the peer to peer transactions that happen over the bitcoin network. Any transaction that happens over the bitcoin network is verified by the bitcoin distributed network and is entered into the block chain ensuring the authenticity of transactions.
Since bitcoins are not issued by any central...
Website:
http://www.arkayandarkay.com
Bitcoin Price: 5 reasons why you should not get swayed by ...
5 reasons why you should not get swayed by bitcoin's sky-high returns
By
Updated: Dec 01, 2017, 02.05 PM IST
0Comments
Forget the risk of volatility, as it is inherent to most investments, you have more reasons why should stay away from cryptocurrencies.
Related
How to ride the bitcoin rally in India
'Is my capital or/and returns safe, can I liquidate my holdings during a crisis, and will I make...
Date: 2017-12-30 01:26:04
Website:
https://economictimes.indiatimes.com
Bitcoins in India: Online trading, exchange price and ...
After 300 percent price rise in a year, Bitcoin has become an interesting Investment option for everyone. Bitcoin has instilled curiosity and excitement for investors and despite it fear of risk is prominent, whether to invest in Bitcoin safe or not. Bitcoin recently got highlighted in the news during Ransomware attack as hackers looked keenly interested in bitcoins. Most of the malicious transactions now days by hackers involves bitcoins. Last month Japan's biggest electronics retailers, Bic Camera, began accepting bitcoin at two stores in Tokyo.
At present, there are only 21 million bitcoins available in the market. By the end...
Website:
https://www.newsfolo.com
Bitcoins: Latest News, Photos, Videos on Bitcoins - NDTV.com
TRON (TRX) Falls 5%. Five Things Cryptocurrency Investors Should Know
Business | NDTV Profit Team | Thursday January 11, 2018
Tron (TRX) trades at $0.111838 on Thursday, as the data given by CoinMarketCap. The price is the average price of 36 stock exchanges that deal in Tron worldwide.
Bitcoins Will Come To A Bad End, Says Warren Buffett. Ten Things To Know
Business | NDTV Profit Team | Thursday...
Website:
https://www.ndtv.com
How To Buy IOTA In India – Purchase IOTA Cryptocurrency In ...
0 Comments
393 Views
How To Buy IOTA in India: Hey, are you looking for invest in IOTA but you don't know how to buy IOTA in india. Now don't worry because today in this article we are going to share how to buy IOTA cryptocurrency in india.
Daily there are so many people�search on internet about how to buy IOTA coin in india from INR (Indian Rupees) or USD (Dollar). But there is no any direct...
Date: 2018-01-30 17:03:35
Website:
http://robusttricks.com
Related topics : use bitcoin to buy ethereum / buy bitcoin exchange india / buy bitcoin wallet india / buy with bitcoin india / exchange bitcoin for ethereum
Unocoin News – Buy Sell and Use Bitcoins in India
Posted on
September 7, 2017
Integration of Unocoin's exchange into the Blockchain wallet makes it easier for millions of Indians to participate in the digital currency ecosystem
Bangaluru, India -- 7 September 2017: Blockchain, the world's leading software platform for digital currency announced a strategic partnership with Unocoin, India's most popular bitcoin exchange, that will allow...
Website:
https://news.unocoin.com
Bitcoin Price Prediction 2020 - Worlds Digital Currency
Bitcoin Price Prediction 2020
But is that the end of it? Bitcoin wandered as far as $4,477 last week before reverting to $3,929.24, so naturally investors are unsure how to proceed. These are uncharted waters.Bitcoin Price Prediction 2020
It's tempting to sell Bitcoin and head for the exits, but what if the price continues to soar?
Therein lies the difficulty, dear reader. In investing, questions...
Website:
http://worldsdigitalcurrency.com
Cryptocurrency in India: Usage and Regulation - India ...
By�Bradley Dunseith
�
Bitcoin trading in India peaked to over US$3.5 million this September, following a steady rise in domestic usage. While a monthly trading volume of US$3.5 million may seem insignificant in juxtaposition to global trends - the U.S. bitcoin trading volume for the same month exceeded US$36 million - the figure demonstrates India's growing interest in cryptocurrency.
India's...
Website:
http://www.india-briefing.com
Bitcoin Blockchain Size Limit - bitcoinpools.net
At Coinbase, for instance, dependable clients might merely purchase up to $1,000 well worth of bitcoins continually.
Bitcoin Blockchain Size Limit -Investment Hunters Calculator -Qe For The Masses - Unity Ingot
Click right here to visit our web page as well as find out more regarding bitcoin blockchain size limit .
Bitcoin has actually been a standout amongst one of the most impressive moneys to...
Website:
https://bitcoinpools.net
India's first bitcoin trading app launched | Zee News
India's first bitcoin trading app launched
The app would permit a range of transactions, including payments, remittances, business-to-business commerce, supply chain finance, asset management and trading.
IANS| Updated: Dec 28, 2017, 15:40 PM IST
Comments |
New Delhi: At a time when bitcoins are in focus for all the wrong reasons, cryptocurrency dealer Pluto Exchange on Thursday announced the...
Date: 2018-01-11 23:14:27
Website:
http://zeenews.india.com
BCH to INR Chart | Bitcoin Cash to Indian Rupee Live Price
All Cryptocurrency Price in INR Bitcoin Cash Price in India (BCH INR)
Bitcoin Cash Price in India (BCH INR)
BCH / INR - Bitcoin Cash to Indian Rupee Price Live Chart
BCH to INR (Bitcoin Cash / Indian Rupee) Exchange Rate Live
About BCH to INR
BCH / INR combination is one of the most...
Website:
http://www.stockmaster.in
Are Bitcoin exchanges turning into haven for tax evaders ...
Today, no other currency in the world is making these many headlines as the cryptocurrency. A single Bitcoin is costing around USD 18000, a� whopping Rs 11 lakh, making it one of the costliest currencies in the virtual world.
Technologists and experts have various reasons to analyse the fluctuation , but in India Vijay Mukhi, one of the pioneers of the Indian IT industry, has claimed that...
Website:
http://indiatoday.intoday.in
Bitcoin valuation tops $7,000 as crackdown looms over ...
Close
Comparing different cryptocurrencies
Digital currency Bitcoin reached a new all-time high of $7,000 on Thursday as the cryptocurrency's valuation continues to climb after a more than tenfold increase in its worth over the past one year.
Bitcoin's value has more than doubled in the past seven weeks, and the digital currency is now on course for the fifth successive quarter of increases,...
Website:
http://www.ibtimes.co.in
Zebpay | India's Leading Bitcoin Exchange
users
What is Bitcoin?
Bitcoin is the world's first digital decentralized currency and payment network. It helps us connect financially just like the Internet has helped us connect socially.
Bitcoin is the Internet of money.
Simple Steps To Buy And Sell Bitcoins
Simple, fast and secure way to buy bitcoins
Verify Your Account
Download Zebpay app and verify your mobile number. Go to verification and enter all the details.
Please note: keep...
Website:
zebpay.com
Zebpay | India's Leading Bitcoin Exchange
users
What is Bitcoin?
Bitcoin is the world's first digital decentralized currency and payment network. It helps us connect financially just like the Internet has helped us connect socially.
Bitcoin is the Internet of money.
Simple Steps To Buy And Sell Bitcoins
Simple, fast and secure way to buy bitcoins
Verify Your Account
Download Zebpay app and verify your mobile number. Go to verification and enter all the details.
Please note: keep...
Website:
zebpay.com
Gold for Bitcoin? Global Chase for Virtual Currency Takes ...
Gold for Bitcoin? Global Chase for Virtual Currency Takes Roots in India Too
'Gold for Bitcoin' is emerging as a new trend in the world of online transactions.
By : Bharadwaj Sharma
July 28, 2014 19:45 IST
The paperless, bank-less, and state-less currency is gaining ground as it can be used just the same way that any digital money is used to pay for goods and services, such as buying coffee, a...
Website:
http://www.ibtimes.co.in
RBI cautions users of virtual currency, again - Livemint
Poll setback in Gujarat's cotton belt worries Maharashtra BJP
The Reserve Bank of India (RBI) on 1 February said that it has not given any licence or authorization to any entity or company to operate virtual currency schemes or deal with bitcoin or any virtual currency. "Any user, holder, investor or trader dealing with virtual currencies is doing it at their own risk," said RBI in a release on...
Date: 2017-12-20 02:06:29
Website:
http://www.livemint.com
Indians lose crores of rupees in bitcoin exchange collapse
It is believed that many Indian bitcoin operators and traders have lost crores of rupees in the collapse.
Indians across the country hold over 35,000 bitcoins (worth over Rs 100 crore). Non-Resident Indians too deal in this currency, which is currently trading at $550 apiece but is not backed by any financial authority or real asset.
Today, a single bitcoin costs about Rs 37,000. This includes...
Date: 2018-01-25 06:41:18
Website:
https://www.indiatoday.in
How I save money by using bitcoin to send money to Zimbabwe
I have been using bitcoin to send money to Zimbabwe for more than a year in order to save money on fees and make a small profit on the exchange rate. As a result, I now use only about $275 to send $300 to my parents' EcoCash account. This represents approximately $35 in savings per transaction compared to the $310 I previously used by channeling remittances through Money Gram. This method only...
Website:
https://www.techzim.co.zw
How to Buy Bitcoin in United States (USA): Exchanges ...
not available in 3 States;
verification is a must for purchasing and withdrawing BTC.
ShapeShift
ShapeShift is an interesting exchange as it does not require any sort of registration from your side. The payment methods also do not exist but rather you swap altcoins for BTC and vice versa. The miner fees are fixed for each altcoin, thus the larger amount you trade, the lower percentage cost it...
Website:
https://bitcoinbestbuy.com
Crypto crash: Bitcoin nosedives 50% in India in just 13 days
The volatility of crypto currency bitcoin worldwide in recent times has had its spinoffs in India as well. The bitcoin's value has declined at least 48 percent in less than two weeks, according to bitcoin exchange Zebpay, said a report in the Economic Times (ET) on Thursday.
According to data available with Zebpay, the value of the currency in India has declined from Rs 3,40,116 per unit on...
Website:
http://www.ibtimes.co.in
Pluto Exchange | Bitcoin Trading In India | Buy, Sell ...
U571521
Copy This Code
Unocoin is one of the safest bitcoin wallet in India. I've been using this app for a month now and I have earned bitcoines. this app also gives you 200rs worth bitcoins for first signup. I liked the concept they put into this app where we can buy and sell bitcoins securely. The layout and design of this app is very user friendly, we can easily look for an option, it's also...
Date: 2018-01-04 18:39:28
Website:
http://www.plutoexchange.in
Are you investing in Bitcoins? Get ready for multiple tax ...
Bitcoins or cryptocurrencies are new buzzwords both for investors and tax authorities.
Published: December 26, 2017 3:41 AM
Bitcoin is a cryptocurrency and a worldwide payment system not regulated by central banks.
Chirag Nangia & Shailesh Kumar
Bitcoins or cryptocurrencies are new buzzwords both for investors and tax authorities. While investors are fascinated by an exponential increase in its...
Website:
http://www.financialexpress.com
Related topics : bitcoin investment in india / bitcoin investment / trade bitcoins in india / bitcoin trading in india / using bitcoin for currency exchange
Bitcoin wallet provider Blockchain enters India via ...
New York-based Bitcoin wallet provider and software developer Blockchain will now enter the Indian market via a strategic partnership with Bengaluru-based crypto-currency exchange Unocoin.
Blockchain, which plans on bringing its software platform to India , claims that their product gives the users a seamless experience when it comes to Bitcoin transactions by reducing hiccups between the end user and the exchanges.
Here's more about it.
In context:...
Website:
https://www.newsbytesapp.com
Related topics : bitcoin blockchain wallet / bitcoin india exchange / bitcoin software development / get a bitcoin wallet / bitcoin system in india
Coinsecure aims to go beyond bitcoin, add more ...
Delhi-based Coinsecure offers bitcoin wallet, exchange, trading and merchant services along with other blockchain-based services
In early 2011, when bitcoin was a two-year-old concept, Benson Samuel and Mohit Kalra were enthralled by the possibilities the cryptocurrency held. Benson (37), who was working with a technology company, came to know about the concept and immediately started studying...
Website:
https://yourstory.com
Best Bitcoin Wallets India 2017 - Trusted Android and iOS ...
2. Unocoin
Unocoin is among the India's leading Bitcoin platform. You can buy bitcoin with any Indian Bank account via online banking or NEFT (National Electronic Fund Transfer) and RTGS (Real Time Gross Settlement). Here you can also check the rise and drop of BTC price past 24 hours. Like Zebpay, this is also trusted bitcoin wallet in india for android & iOS.
Unocoin also has few downsides....
Website:
https://technoclever.com
All about bitcoins - The Hindu
April 13, 2017 00:02 IST
Updated:
April 13, 2017 10:40 IST
more-in
How to buy, send and invest in the digital currency
"Bitcoin is the beginning of something great: a currency without a government, something necessary and imperative."
Nassim Taleb, author of The Black Swan
How do people use bitcoins?
It is an electronic or digital currency that works on a peer-to-peer basis. This means that it is...
Date: 2017-12-20 04:10:51
Website:
http://www.thehindu.com
All about bitcoins - The Hindu
April 13, 2017 00:02 IST
Updated:
April 13, 2017 10:40 IST
more-in
How to buy, send and invest in the digital currency
"Bitcoin is the beginning of something great: a currency without a government, something necessary and imperative."
Nassim Taleb, author of The Black Swan
How do people use bitcoins?
It is an electronic or digital currency that works on a peer-to-peer basis. This means that it is...
Date: 2017-12-30 08:10:51
Website:
http://www.thehindu.com
Best Buy Sell Bitcoin In India, Bitcoin Exchange Trading ...
BUY TOKENS JOIN OUR NEWSLETTER Create Your Bitcoin Wallet
What is Bitcoin?
Bitcoins are an inventive payment system which is an open source and accessible by the public. Being invented in 2009 by Satoshi Nakamoto, the bitcoins are globally decentralized form of digital money and are comparable to conventional payment systems. They enable the users to transact directly with a minimal fee, without the hassles of an...
Website:
https://www.belfrics.in
Create online bitcoin account - What is happening to ...
Create a blockchain wallet account for free to store your bitcoins, and then sell for cash. Make Rs.50000 every month with BTC, earn from BTC.Bitcoins on mobile wallets and bitcoin to cash. changing the site to make it possible for us to easily create mirrors to make. register an account,.Presents information from the blockchain, and other bitcoin related statistics, such as pool statistics.For...
Website:
http://airarabiaonlinebooking.info
Bitcoin Trading In India: Pluto Launches Cryotocurrency App
New Delhi: At a time when bitcoins are in focus for all the wrong reasons, cryptocurrency dealer Pluto Exchange on Thursday announced the launch of India's first mobile application for transacting in the virtual currency. At a press conference,�Pluto Exchange Founder and chief executive Bharat Verma said that his company is all set to launch the country's first app-based wallet that enables bitcoin transactions using a mobile number.
"The Pluto Exchange mobile app offers a solution to the coordination problem between payment processors, financial gateways and banks," Verma said.
"All other apps already in the market do transactions using bitcoin...
Date: 2018-01-30 17:04:22
Website:
https://www.ndtv.com
Coinbase sets eyes on India, makes bitcoin wallet available
Coinbase sets eyes on India, makes bitcoin wallet available
Emmanuel Amberber �����posted 3 years ago����� shares
If you're a YourStory reader based in the US or the EU, this comes as good news. Popular bitcoin wallet provider Coinbase is giving free bits for all its new users .�As new users create a verified account, Coinbase gives out 100 bits, which can be securely stored...
Website:
https://yourstory.com
India's first bitcoin trading app launched | The News Minute
At a time when bitcoins are in focus also for the wrong reasons, cryptocurrency dealer Pluto Exchange on Thursday announced the launch of India's first mobile application for transacting in virtual currencies.
At a press conference here, Pluto Exchange founder and Chief Executive Bharat Verma said his company is all set to launch the country's first app-based wallet that enables bitcoin...
Date: 2018-01-11 23:14:35
Website:
https://www.thenewsminute.com
Bitcoin mania: India gets its first mobile app for ...
Tweet
New Delhi:�At a time when bitcoins are in focus for all the wrong reasons, cryptocurrency dealer Pluto Exchange on Thursday announced the launch of India's first mobile application for transacting in the virtual currency.
At a press conference here, Pluto Exchange Founder and Chief Executive Bharat Verma said that his company is all set to launch the country's first app-based wallet that...
Website:
http://www.firstpost.com
Unocoin review, bitcoin exchange, India bitcoin wallet ...
Go to Unocoin
Unocoin Company
The idea to Unocoin company grew up in June 2013 at the IndiaBitcoin meet-up. Unocoin was set up at trial basis in India´s first Global Bitcoin Conference in December 2013. In Oct 2014 Unocoin was a fully operated bitcoin wallet. On 7th April 2016, the Unocoin business has been transferred to Unocoin Technologies Private Limited. That is a fully owned subsidiary...
Website:
http://www.cryptocoinzone.com
How to Buy Ripple in India: 4 Platforms Where You Can Buy ...
Ripple's market cap shot up more than 2x in the last week alone taking Ripple's market cap to nearly 30 billion USD. While there are many platforms where Indians can buy Bitcoin and Ethereum , Ripple coin exchanges are very few in India. Below, we look at some cryptocurrency platforms where people can buy Ripple (XRP) in India�in INR.
List of platforms to buy Ripple (XRP) in INR:
1....
Website:
https://www.fintown.com
Related topics : exchange bitcoin for ethereum / buy bitcoin exchange india / exchange bitcoin to ripple / bitcoin buy sell exchange / buy bitcoin exchange
bitcoin market graph | Bitcoin Trends
Bit Coin Exchange Profit
June 25, 2017 0
Bitcoin Exchange London Awesome Btc Arbitrage Bot - http://tinyurl.com/4qeipv2o9 Bitcoal arbitrage...
Website:
http://www.bitcointrends.org
Related topics : bitcoin trading currency market / coin exchange bitcoin / trade bitcoins in india / bitcoin trading in india / bitcoin trading charting
Cryptoexchang.com,Trusted Bitcoin and Ethereum instant ...
Monero is cryptocurrency that focuses on privacy and decentralization, popular and globally accepted. Spend or Exchange your Monero to real cash, Paypal transfer, Bank wire, Payza, Perfect money, Neteller, and more
Sell Your Cryto Currency�at Highest�Price
Popular & Reliable Exchange
Bitcoin...
Website:
https://cryptoexchang.com
Pluto Exchange launches India’s first bitcoin trading app ...
At a time when bitcoins are in focus for the wrong reasons, cryptocurrency dealer Pluto Exchange on Thursday announced the launch of India's first mobile application for transacting in virtual currencies.
At a press conference here, Pluto Exchange founder and Chief Executive Bharat Verma said his company is all set to launch the country's first app-based wallet that enables bitcoin transactions using a...
Date: 2018-01-30 17:07:22
Website:
http://www.thehindu.com
Related topics : buy sell bitcoin app / using bitcoin for currency exchange / bitcoin apps in india / buy bitcoin exchange india / bitcoin india exchange
How does Bitcoin Work: Bitcoin Transactions Explained with ...
Despite being a virtual currency, bitcoin transactions do take place. But how? Do you also wonder how does Bitcoins work? How does bitcoin transactions happen?Are there any fees attached during bitcoins transactions? Where does this transactions actually take place? Well, we have an answer to all your questions.
Read this post till the end, we will guide you in details about every step of bitcoin...
Website:
https://coinscage.com
Bitcoin For Beginners – Zebpay Blog
BlockedUnblock
FollowFollowing
India's leading bitcoin exchange. Fastest and easiest way to buy and sell bitcoins in India. Best rates guaranteed. http://app.zebpay.com/medium
Sep 12
Bitcoin For Beginners
First things first--Bitcoin is a digital or virtual cryptocurrency that can be exchanged between people or businesses that accept them. Cryptocurrencies aren't a very modern concept--they have...
Website:
https://blog.zebpay.com
Bitcoin Debit Card Comparison - +Bitcoin | Bitcoin Tips ...
Search for:
Bitcoin Debit Card
Bitcoin debit card gives you the option to convert bitcoins to cash which you can withdraw at ATM or use it for shopping. Bitcoin debit card is connecting the virtual and real world. By bringing together a widely accepted traditional form of payment in the online and offline space, and bitcoin, a new digital currency, the debit card comes to life. In the world of...
Website:
plusbitcoin.net
How To Buy Bitcoin in India 2017 Low Price in Hindi - YouTube
Zebpay is app-enabled bitcoin wallet provider headquartered in Singapore with IT office in Ahmedabad, Gujarat, India.
The company was founded by Mahin Gupta in late 2012 under the name Buysellbitco.in and is India's first bitcoin exchange. Later it was rebranded to Zebpay in September 2014 adding two more partners - Saurabh Agrawal and Sandeep Goenka.
Zebpay is India's first bitcoin company to launch simplest mobile Bitcoin wallet app that enables bitcoin transactions using mobile number without any complexities to understand bitcoin addresses, taking backups or fear of losing bitcoins.Using Zebpay wallet app, users can buy, sell, store and spend bitcoin...
Website:
youtube.com
Related topics : bitcoin india price zebpay / buy bitcoin wallet india / bitcoin wallet android app / buy sell bitcoin app / bitcoin buy price in india
How To Buy Bitcoin in India 2017 Low Price in Hindi - YouTube
Zebpay is app-enabled bitcoin wallet provider headquartered in Singapore with IT office in Ahmedabad, Gujarat, India.
The company was founded by Mahin Gupta in late 2012 under the name Buysellbitco.in and is India's first bitcoin exchange. Later it was rebranded to Zebpay in September 2014 adding two more partners - Saurabh Agrawal and Sandeep Goenka.
Zebpay is India's first bitcoin company to...
Website:
youtube.com
Related topics : bitcoin india price zebpay / buy bitcoin wallet india / bitcoin wallet android app / buy sell bitcoin app / bitcoin buy price in india