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Enjoy this picture of an adorable little girl holding onto these bitcoins like her life depends on them.

 

Image credits: google.com/images

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Second-Largest Stock Exchange of Germany Releases Crypto Trading App

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The second-largest stock exchange of Germany, Börse Stuttgart is going to launch a crypto trading app by the end of this year. Sowa Labs, which is a subsidiary of Börse Stuttgart revealed the application on Friday, and said, the app would be available for use from September; also, the app will provide trading support for the following cryptocurrencies:

  • Bitcoin
  • Ether
  • Litecoin
  • XRP

The official website of the app also says that more assets will be coming soon. The app is called “Bison,” and users will be allowed to download it for free. According to the developers of the app, Binson will not charge additional trading fees. Plus, the app’s prototype will be demoed in Stuttgart during a trade-show this week.

cryptocurrency stock exchange

Crypto Trading App

The app is initially designed to offer easy means for investors so that they can gain exposure to the crypto markets. According to the Sowa Labs, the Bison app is going to be the first cryptocurrency trading app that is being supported by a stock exchange and will be the first one to be released by a German company as cryptocurrency stock exchange.

The managing director of Sowa Labs, Ulli Spankowski, said in a statement:

“Bison makes trading in digital currencies easy. It is the first crypto app in the world to have a traditional stock exchange behind it.”

Last year, the exchange developed Sowa Labs, in the month of December and took 100% of its interest in the Ulm-based startup. Even though the accurate figure hasn’t been known, some reports say that the price of the acquisition was in the millions of euros. The progress also shows the current instance of a traditional stock exchange going into the cryptocurrency trading game via subsidiary.

The operator of TMX (Canadian stock exchange company), announced last month that its very-own subsidiary had ‘struck a deal’ for setting up a cryptocurrency brokerage. The brokerage will focus on; bitcoin and ether and will be set to launch in the middle of 2018. The prototype for Bison was unveiled at Invest, which is a German finance and investment trade fair. Reports say, the German version of Bison is scheduled for release in autumn, and after it gets lauched, Börse Stuttgart will announce an English version of it.

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Bitcoin Transaction Stuck? Don’t Panic! Here’s what you need to do

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Bitcoin Transaction Stuck

 

The number of transactions on the Bitcoin network has rapidly increased over the past couple of years. With more blocks filling up, all the transactions cannot be included in the blockchain at once.

Transactions that pay the highest fees are usually included in the blocks first and transactions with comparatively lower fees are made to wait until they find a new block. These transactions remain in the mempool of miners until their turn is up.

This gets the user quite irritated as some low fees transactions may take around days or weeks to confirm. But here’s what you can do if you happen to have your bitcoin transaction stuck.

Before You Send The Request:

Most wallets had a fixed fee of 0.1 mBTC during the early years of Bitcoin. Back then, miners had spare space in their blocks due to which they were able to accommodate more transactions in the first block itself that they mined.

Although, because of the increased competition for block space right now, the 0.1 milli bitcoin transaction fee is insufficient to have a transaction included in the next block. So, transactions with higher fees are taken up.

If you want to have your transaction confirmed faster, the obvious advice is to increase your amount. You may be able to adjust your fees manually when you send your transaction.

Also, check to see if your wallet includes dynamic fees.

Recently, most wallets are said to support dynamic fees. According to Bitcoin network, these wallets automatically include a fee that is estimated to have a transaction included in the next block or maybe in the upcoming blocks.

Several wallets let you decide your fee priority, again, a higher fee lets your transaction confirm faster.

After You’ve Sent it:

After you’ve sent your transaction and it happens to be stuck, that transaction can be made to skip the queue. This can be made possible using an option called Opt-In Reference-by-Fee (Opt-In RBF). Using this method, you can re-send the same transaction, but with a higher fee. Usually, when you re-send the same transaction, Bitcoin nodes detect this new transaction a double spend and therefore reject it. Although, by sending it using Opt-In RBF, you are explaining to the network that you may re-send that same transaction later on but with a higher fee. As a result, most Bitcoin nodes now accept the new transaction; allowing the new transaction to jump or skip the queue.

But, do remember, not all miners support Opt-In RBF, so your new transaction does depend on the hands of the new miner that mines that next block.

Electrum and GreenAddress are two wallets currently supporting the Opt-In RBF option. You will need to enable Opt-In RBF in the settings menu of your wallet, before proceeding any further with the transaction.

If Opt-In RBF doesn’t do the trick, then another solution would be Child Pay for Parent, CPFP. By applying this method, miners don’t pick a transaction with a high fee, but a set of transactions that include most combined fees.

As a Receiver:

Lastly, a Bitcoin transaction can also get stuck on the receiving end of it. If your wallet allows you to spend Bitcoin unconfirmed transactions, this can be solved with CPFP as well. If the new fee is sufficient, the transaction is supposed to complete within a couple of blocks.

 

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Facts about bitcoin

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This is a time of bitcoin. This year interest in virtual currency increases as compared to last year. In this article, I will discuss the main bitcoin facts which are the cause of increasing interest in virtual currency. Let’s move toward the discussion.

A brief about bitcoin

Transactions are made without a middle authority. Which means, no banks! No need of heavy fees for transactions. No need for central authority’s order to confirm the transaction and you are allowed to do transactions anonymously. This is the secure and legal way of transactions. Because the transaction is verified by the proper channel named blockchain. Who keeps the records of transaction and verify them through proper ways. Bitcoin is pretty much like cash for the Internet. Read  article if you want to know about the Bitcoin

Current value of the bitcoin

Today, 2 June 2017, bitcoin’s value is $2466.48. As you see the increasing behavior of the bitcoin value. Accordingly, Bitcoin has captured the everyone’s attention.

Whereas, today’s open, high and low is,

Meanwhile, you know the current status of the bitcoin. Want to know about the market value of the bitcoin. and price analysis of bitcoin

Decentralize the middle person

While we are going to deal with currency, we don’t like the third person’s interference. The security we need during our transaction, bitcoin provide the same. The third person in the transaction is not allowed even third is a government. Bitcoin transaction process doesn’t allow any person’s interference. Furthermore, you are free to do transaction anonymously without third person’s interference.

Check and balance   

When you have completed your transactions, you can check the details. Copy them or save them where ever you want.  https://bitref.com/ here, you can check the details of your transactions.

Do study with bitcoin

You have a wish to go back to the university life and you have just bitcoin. Don’t get panic. Bitcoin technology and its followers allow you to pay the fee in bitcoins. New Yorker University of The King’s College accepts the Bitcoin as the fee of your semester.

However, this is the initiative steps in universities. The University of Cumbria in the UK, the University of Nicosia in Cyprus is also planning a degree in digital currencies for students.

64% part of the bitcoin on blockchain  

A few years back, bitcoin’s rate was $1 for 1309BTC less than $0.00076 per BTC. Meanwhile, the price is very low. But, time change, Bitcoin asserts itself and easily acceptable everywhere. Let’s have an example, you get 393,225BTC by paying $300 at that time. Now, you are going to sell them and cost of BTC is $2,226.08. You will have the enormous wealth of $875,350,308.

A study by California University,

There is a huge history of bitcoin user’s. Who lost the private keys and unable to use bitcoin. Here are two examples of the accounts, still they don’t do any transactions.

1FeexV6bAHb8ybZjqQMjJrcCrHGW9sb6uF: this address was created on 1st March 2011 and now 2017. In addition, 75,957 bitcoins have been not using still.

12tkqA9xSoowkzoERHMWNKsTey55YEBqkv: this was created on 5th March 2010, and still no progress or spent bitcoins from 28,150.

Computing power is higher   

Bitcoin computing power is 2 046 364 Pflop/s. whereas, 500 supercomputer’s computing power is 274 Pflop/s.  you can see the difference of power computing networks. However, Bitcoin users are not performing fluctuating processes. But, only numeral calculus. How can we proceed? It is simple, infect,

A hash is equal to 6.35K numeral actions

A numeral action is equal to 2 variable fact actions, whereas,

A hash will be equal to 12.7K variable fact actions

So, if we use the rate of one hash that is the 12.7K flop, and analyze it with the network is 161 131 086 gh/s, we get the approximation of 10^9*161131086 H/s * 12700 = 2 046 364,7922 Petaflops.

Too much computing power, this power can b utilize during modelization process.

114-million-dollar transaction

A transaction which shows the transaction of 114 million dollars or more. Accordingly, an effective rate of the time. Transaction is,

How created bitcoin

Bitcoin acceptance is worldwide. People use it, spent it for their daily needs, means it has a worth. How created the bitcoin? its answer is still a mystery. Few names have surfaced the financial platforms like Craig Steven Wright. Know about Craig Steven

Total number of bitcoin

We all know the limited amount of Bitcoin supply is 21 million.  Which will never exceed this amount. Whereas, bitcoin users are continually mining the Bitcoins. It is a rough estimation that 14 million bitcoins are mined. Accordingly, two-third bitcoins are mined. In addition, it is a prediction that the last bitcoin will be mined in 2040. Which clearly means that we still have an option of mining. But unfortunately, due to a high demand of coin decreases the supply.

Black Friday bitcoin sale  

You are able to buy bitcoin for cash. On the day of Black Friday, you are allowing to buy bitcoin and then spend it in different ways. How to shop with bitcoin, you can read the article.

Physical Bitcoin

Few users + lovers of the bitcoins introduce the physical bitcoins. They are doing heavy working behind these projects. Fortunately, they have code redeemable for digital currency. Read physical bitcoins

Leaders called it scary  

When few sites like Mt. Gox hacked in 2011, a developer Gavin Andresen states on his personal blog.

“I’ve said it before, and I’ll say it again: Bitcoin is an experiment. Treat it like you would a promising Internet start-up company: maybe it will change the world, but realize that investing your money or time in new ideas is always risky,” courtesy of http://gavinthink.blogspot.com/2011/06/that-which-does-not-kill-us-makes-us.html

No inherent no set values

Luckily, another fact of the bitcoin is, bitcoin has unique or unstable values. Whereas, no other currency support bitcoin inherited its values. Bitcoin values are changing, depends on the services.

Losing wallet

When you are losing your wallet, forget about your bitcoins. because it will never come back to you again. So, keep the complete security of your wallets. It is a scary fact that people forget or lose their wallets of the bitcoin.

Bitcoin vs Gold

Bitcoin’s value crosses the gold’s value. Isn’t insane???

Yes, Bitcoin crosses the gold’s value. Read the article about bitcoin vs gold,

Few other facts of the Bitcoin are,

 

Conclusion

Above all are a few facts of the bitcoin. Some of them are scary, few are interesting and other are insane.

Goodluck!

 

 

 

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The blockchain immutability myth

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The blockchain immutability myth

Immutability…. We use this word in daily routine to signify a thing, which can never change. Whereas, in the blockchain, this word is referring to the worldwide transactions. Which is adjust by the participants. Here, the basic approach is, once the block blockchain transactions are complete, it cannot replace or reverse by other transactions.

So, the theory goes. Because

Saint Augustine states, “The highest good, than which there is no higher, is the blockchain. And consequently it is immutably good, hence truly eternal and truly immortal.”

Two prominent examples are,

  1. Under certain conditions, through some necessary adjustment transactions, history can change itself. Here, the question is arises, it easy to bring new changes in the content of the blockchain? Is it really easy?
  2. According to cryptocurrency advocates, immutability achieves only in case of decentralization of economic mechanism. Which is not proper fall at the private sector of the blockchain. Because, they totally depend on the collective behavior of a known group of validators, who are not trustworthy.

Above two circumstances are totally wrong. Because in blockchain there is no immutability thing exist. The proper question is,

Under which circumstance the blockchain will or will not change? And,

Do those conditions match with the problem, we are trying to solve?

Instead, the chain’s behavior depends on the network of a computer system. Before we get into the detail of how we ‘ll summarize the basics of blockchain first.

Brief discussion on Blockchain  

A blockchain system is running onto the different set of nodes. Which may be in control of different companies. There is no individual node who control the others. While nodes are connecting with each other through a proper network. These nodes generate and propagate transactions and rapidly spread to other nodes via digital operations in some kind of database.

Every new upcoming transaction is verified by an independent node. Following are some terms of verification;

1.it is totally in obedience of blockchain rule and regulations.

2. it is completely a digital structure

3. If any transaction passes the test of nodes. It will enter to the local list of not confirm transactions means directly in the memory pool. While others will enter in the orphan pool. In addition, pass transactions will be forward to its peers.

With some intervals, a node which contains the set of as-yet unconfirmed transactions on the network generates a new block. Each block contains the hash (32-byt). Therefore, by creating a little block chain, each block includes the timestamp. Accordingly, link to the previous block via its hash.

Validation Process

Blocks move and verified by nodes across the network like transactions. For the acceptance by the nodes, a block must contain proper transactions including no conflict with other ones. Whereas, with the confirmation of the test, it is entering into the local blockchain and transactions are confirm. Any transaction which conflict with others will discard immediately. Whether they are in memory pool or orphan pool.

Participation of the chain, make the strategy to ensure the generation of blocks.   This ensures indicates that any kind of node. whether it is an individual or a group has no ability to take hold of the blockchain’s content.

Authentication and testing

Proof-of-work a public blockchain allow its users to generate block who has the ability to solve the tricky and fiendishly mathematical puzzle. Whereas, to prevent minority control in private blockchains, blocks are signed by authorized members. In order to create a lawful chain, a product needs to legalize validator by using mining diversity.

Two different validator nodes can generate conflicting blocks when both have the same previous points. However, fork happens. While different blocks are seen by nodes and leading them to have the different opinion about the chain’s history. These forks are resolved on the arrival of new blocks on branches by a blockchain software.

Shorter branch’s node spool back its last block and replay these two blocks on the longer one. Unfortunately, if you are unlucky and both branches will extend. Then the conflict will be resolved by the third and so on. In addition, with the increase in fork’s length, the probability of a fork persisting drops increases. After a small number of the blocks, it can be reduced to zero in private blockchain.

Here, the most important thing to remember is, each node is controlled by a particular person. Where blockchain has not authority to ask some changes in transactions. The main purpose of the chain is to help in sync. But, if participants want to change the rule, no one has authority to stop them.

That is why we need to stop asking about the immutability of blockchain. Because the answer is “no”. Arguably, we consider the conditions under which it needs changes.

 

 

The blockchain immutability myth

Public chain’s mutability

Let’s start with the above mention two examples. We will take the start with the claim that authorization process. Which used in blockchain cannot bring true immutability by public chains. e.g.

Ethereum blockchain faces a devastating situation in June 2016. “the DAO”, loophole found by someone. In which, $250 million were invested and start draining its speed. Which distract the both investor and creator’s intentions. After few days, the ethereum software updated to prevent from hackers. It was publicly supported by Vitalik Buterin that ethereum users will control their own computer system. As a result, a large number of users, blockchain comes with the new name and rules is ethereum. Whereas, minority reject this idea and keep going with ethereum classic. There were more choices for names like ethereum compromise or ethereum pure. Whatever, democracy is the democracy, and everyone has their own rights voice. In addition, ethereum is ten times more than ethereum classic.

Now, we will take a common way, in which blockchain’s immutability will be dilute. Recall that mining of bitcoin and ethereum uses proof of work scheme. Where you get a reward for solving a tricky puzzle. In addition, this reward increases the potential of the users and they solve the relating issues more efficiently. Network continually adjust the rate of block creation. In addition, 10 minutes in bitcoin or 15 seconds in

Immutability of blockchain

Bitcoin has faced the factor difficulty of 350,000x from last 5 years. Today, bitcoin mining is on hardware devices with cheap electricity and in cold weather. Antminer S9 mines the block 10,000 faster than a desktop system. Which burns 10 times more electricity than a system with cost $1089.

To undermine the immutability of bitcoin blockchain, you need to install more mining capacity, then the other network creating 51% attack first. Secondly, through proper testing and approval, mine your own secret branches. Finally, at desired time, release your secret branch to the network anonymously. Then, the whole process of a transaction will be without any scams or hacking issue. It is not easy to install a huge program. It needs a lot of money and electricity as well. And a common man or country who has the shortage of both. Unfortunately, are not able to adopt this way for immutability of bitcoin blockchain.

Let’s estimate the cost of a 51% attack which reverses a year of bitcoin transactions. At the current bitcoin price of $1500 and reward of 15 bitcoins (including transaction fees) per 10-minute block. Miners earn around $1.2 billion per year ($1500 × 15 × 6 × 24 × 365). Reasonably, they are not losing money. So, the total expense should be in the same range.

Rewriteable private chains

Now, let’s have a ride to private blockchains. Which was established for the needs of government and well-reputed organizations. According to the organization’s perspective, immutability is the commercial, legal and regulatory non-starter. Because it allows attacking the network anonymously. whereas, immutability can also be ashore in good behavior of other institutions. With whom, they have authority to sue or sign a contract. It is a bonus because private blockchains are less costly to run. Since blocks need just a node’s approval and digital signature. When a number of validators follow the rules. As a result, you get cheaper and stronger immutability than other digital currencies offer. Furthermore, the percentage of immutability may decrease when participants in chain decide to do so together.

Immutability is nuanced

People who don’t like the traditional banking system and government’s currency are perfect to use proof of work blockchain. Whose immutability rely on economic terms instead of participants. It may be an expensive operation. when parties agree to live with government or wealthy actors and bringing down the network. Accordingly, they believe that cryptocurrency technology and its value continue to grow and it will get more secure.

Finally, for most permission blockchain use cases. We probably don’t want validator nodes to be able to easily and cheaply substitute old blocks in the chain. As Dave Birch says “the way to correct a wrong debit is with a correct credit”. Rather than pretending that the debit never took place. Nonetheless, for those cases where we do need the extra flexibility, chameleon hashes help make blockchains a practical choice.

Good luck!

 

 

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