Cryptocurrencies

What cryptocurrencies do you use/own?

  • Bitcoin (XBT)

    Votes: 30 27.8%
  • Ether (ETH)

    Votes: 16 14.8%
  • Litecoin (LTC)

    Votes: 15 13.9%
  • Peercoin (PPC)

    Votes: 0 0.0%
  • Dash (DASH)

    Votes: 3 2.8%
  • Dogecoin (XDG)

    Votes: 4 3.7%
  • Blackcoin (BLK)

    Votes: 0 0.0%
  • Zcash (ZEC)

    Votes: 3 2.8%
  • Other

    Votes: 14 13.0%
  • None

    Votes: 69 63.9%

  • Total voters
    108
Should I have infinite computing power, what is preventing me from just recomputing the thing from scratch?
Short answer, nodes. Consensus would reject it.

As soon as I recomputed it, we now have two valid copies. Far worse, if I recomputed multiple different copies then we now have multiple valid copies, and proven by cryptography, they are all valid to the same extent. If you choose not to accept them all valid to the same extent, you have just reverted to physical security and/or naive majority voting. For this you do not need blockchain or encryption at all - you may as well just have everyone store plain copy of the data not hashed in any way.

What you're describing is essentially the Byzantine General's Problem, or Byzantine Fault Tolerance. And your concerns are totally understandable since this was a problem that was long thought to have no solution. Just like you, and everyone else who is new to cryptocurrencies, I had the very same questions and concerns. I was very cynical to begin with but my interest was piqued. The more I studied the technology the more I began to realise the enormity of it.

To give you the long answer to all your questions would take pages and pages of explanations and examples. People generally ask such questions about cryptocurrencies for one of two reasons however; either they are uninterested in the technology and are trying to instil doubt in the minds of others (ie trying to 'knock' the technology), or they are genuinely interested and keen to understand this technology. Assuming you fall into the latter group, I thoroughly recommend that you read Andreas Antanopoulos' books; The Internet of Money, which is a non-technical 'why Bitcoin' explanation and Mastering Bitcoin, which goes into great technical depth and answers all of your questions and concerns.

It's a fascinating, world-changing and highly disruptive technology. If you study it, I guarantee you will be glad you did once you start to understand it. If you have any specific questions when you do, I'll do my best to try to answer them.
 
If you find that you need to be subscribed to read this article when you click the link, try googling the title and following that link instead.

Davos: Blockchain can no longer be ignored
Link: https://www.ft.com/content/c0794556-ff50-11e7-9650-9c0ad2d7c5b5

The world’s big financial institutions are wrestling with a cryptocurrency dilemma: whether to stand by and denounce a technology many distrust but also fear — or join those investing in it.

After a surge in the combined market value of cryptocurrencies from less than $20bn to more than $540bn, the phenomenon — and the blockchain technology that underpins it — has become impossible for the financial establishment to ignore, despite its denunciations of bitcoin in particular as “a fraud”, “index of money-laundering” and worse.

“We are sitting down around this table trying to decide whose lunch we are going to eat,” says Richard Crook, head of emerging technology at Royal Bank of Scotland. “Because blockchain’s benefits come from decentralisation there is little point replacing one technology with another without changing the business model.”

Blockchain is a shared ledger technology that powers cryptocurrencies but also allows encrypted data on anything from money to medical records to be shared between companies, people and institutions. This protects data from fraud while instantly updating all parties concerned.

The looming threat for today’s financial institutions is that the technology is based on sharing a single version of a database across multiple parties without a controlling entity in the middle. As a result, stock exchanges and clearing houses could be disintermediated, while big global foreign exchange trading houses, such as JPMorgan and Citigroup, could lose out if smaller banks start using blockchain.

To date the debate has pitted anti-establishment believers in the technology’s power to sweep away many of the faults they see in today’s financial system against top financial leaders who worry about dirty money and are warning investors of a bubble. But big financial institutions’ concern about losing out has shifted the terms of the discussion, which moves this week to the World Economic Forum in Davos, which is holding its first session on “the crypto-asset bubble.”

Jamie Dimon, chief executive of JPMorgan Chase, has recently said he regrets calling bitcoin a fraud. The world will include cryptocurrencies in the way we work in the next 10 years. But it needs to be regulated Benoit Legrand, chief innovation officer at ING

Adam Ludwin, chief executive of Chain, which supplies blockchain systems to financial groups such as Nasdaq, accepts many criticisms thrown at what he calls crypto-assets, not least that they are inefficient, difficult to scale up, overvalued and plagued by misunderstanding and poor governance. Bitcoin’s value has fallen substantially in recent weeks.

But Mr Ludwin argues that crypto-assets have one big advantage over other types of application, their “resistance to censorship”. Nothing can stop a payment in bitcoin because it is done between two parties without a central authority between them.

Mr Ludwin gives the example of someone paying for a meal on Venmo, the US payments app, and attaching a note to say “thanks for a great Persian meal” — only for the payment to be stopped by a bank’s compliance check stumbling over the word “Persian”. That could not happen with bitcoin.

Most banks refuse to touch cryptocurrencies, which raise anti-money laundering concerns because of their anonymity. UK lenders, for instance, have even declined to provide mortgages to people who have funded their purchase deposit by selling cryptocurrencies, which means their money cannot be traced.

However, many big financial institutions are investing plenty of time and money exploring the potential of blockchain technology to improve a range of activities from post-trade settlement in financial markets and cross-border payments to trade finance and syndicated loans.

There are already signs of the crypto-asset class permeating Wall Street, such as last month’s creation of bitcoin futures contracts by two big US exchanges — the CME and Cboe. Goldman Sachs and Morgan Stanley are clearing these contracts for customers while steering clear of directly trading cryptocurrencies or holding them in custody for clients.

Meanwhile, investor interest is surging in cryptocurrencies and the initial coin offerings that finance blockchain-based start-ups.

Last year, ICOs raised more than $3.4bn for such start-ups in an almost completely unregulated market that could threaten fundraising via traditional initial public offerings. Telegram, the messaging app, plans to raise $2bn in what would be a record ICO this year.

Oliver Bussmann, the former chief information officer at UBS who advises on ICOs, says banks are being sidelined. “Crypto-asset managers are coming up to speed like crazy because the banks are standing still while demand is rising from family offices and other big investors,” he says.

Banks are calling on regulators to tackle the new crypto-markets such as ICOs quickly. “We can’t deny that things are changing,” says Benoit Legrand, chief innovation officer at Dutch bank ING. “The world will include cryptocurrencies in the way we work in the next 10 years. But it needs to be regulated. This is absolutely key.”

Antony Jenkins, the former Barclays boss who sits on the board of the cryptocurrency wallet provider Blockchain, believes the impact on financial services and even money itself will be “profound”.

“If you can imagine a world in which you did have one global digital currency, imagine what the benefit of that would be, imagine all the friction and the cost that would come out of the system,” he said in a recent FT video interview. “These things of course might be far in the future, but I don’t think they are very far in the future.”
 
And your concerns are totally understandable since this was a problem that was long thought to have no solution. Just like you, and everyone else who is new to cryptocurrencies, I had the very same questions and concerns. I was very cynical to begin with but my interest was piqued. The more I studied the technology the more I began to realise the enormity of it.

What I see, that people start applying blockchain technology to any and all problems as if it was magic or something. However it has its limitations as with any technology and some use cases are not appropriate. With application to money and given many independent actors blockchain works perfectly. Use of blockchain to maintain unchangeable history of events seems limited though. So I was basically responding to

(blockchain is) an electronic record that cannot be changed.

which omits some of the non-numerical (that is, political) requirements and also a requirement to have some large number of nodes.
 
What I see, that people start applying blockchain technology to any and all problems as if it was magic or something. However it has its limitations as with any technology and some use cases are not appropriate. With application to money and given many independent actors blockchain works perfectly.
I absolutely agree. While there are a huge number of applications that distributed blockchains are perfect for, there are a lot of people 'jumping on the bandwagon', developing blockchain applications that really don't benefit from blockchain technology. One of the worst culprits are the banks, developing centralised blockchain applications. Without the decentralised aspect, a blockchain is nothing more than a database or ledger. On the plus side, banks are spending billions training blockchain engineers who will someday likely leave and help to develop the blockchains that will compete against the very banks that trained them.
 
Is there a good website with lots of charts for crypto currency looking for price graph, buys, sells, volume,transaction fees.
Futures expire 11 am est.
 
Is there a good website with lots of charts for crypto currency looking for price graph, buys, sells, volume,transaction fees.
Futures expire 11 am est.
I think Coinigy is considered to be one of the best sites for trading charts (I've only briefly tried it myself). It isn't free but you can sign up for a free trial:
https://www.coinigy.com/features/

Block chain technology another good use for it is VOISE where artists get 100% of the profits from their work.
https://www.ccn.com/blockchain-base...announces-partnership-bitcoin-pr-buzz-agency/
Enabling those in the media and entertainment industries to get fairly paid for their work does seem to be a good and popular application for blockchain technology. There's a few similar projects such as Viberate: https://www.viberate.io/en/
 
I've never used Tradingview but it does appear to be similar.

This seems to suggest that they are (in some respects) competing services:
https://steemit.com/cryptocurrency/...at-s-the-best-cryptocurrency-trading-platform

As far as I know coinigy just uses tradingviews charts, coinigy has additional features being that tradingview is just charting/chat such as connecting to an exchanges api and allowing to open/close/modify trades and pull account information. I tested coinigy with bittrex and there were some moments when the api didnt quite sync right, if my memory serves me correct sometimes an order would complete but on coinigy it would look like it hadnt. I imagine coinigy performance varies from exchange to exchange because if it was an issue with all the exchanges I doubt it would be as popular as it is.
 
Samsung confirms making chips for mining bitcoin and other cryptocurrency
Link: https://www.rt.com/business/417575-samsung-makes-cryptocurrency-chips/
South Korean tech giant Samsung has announced that it’s developing hardware specially designed for cryptocurrency mining. The move is aimed at boosting the firm’s profits.

More info: https://cointelegraph.com/news/samsung-asic-chips-positive-news-for-miners


Square Cash App Releases Bitcoin Buy/Sell Option To Almost All Users
Link: https://cointelegraph.com/news/square-cash-app-releases-bitcoin-buysell-option-to-almost-all-users
The Square Cash App, an app for sending and receiving fiat currency from the mobile payments company Square, has now made Bitcoin (BTC) trading available for almost all of its users, excluding those in New York, Georgia, Hawaii, and Wyoming.
 
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More fake news saying India is going to ban crypto currencies it is amazing what fake news can do to the price of crypto currency i think the news needs a block chain check on stories before they are released to prevent fake news or misinterpreted news.
 
More fake news saying India is going to ban crypto currencies it is amazing what fake news can do to the price of crypto currency i think the news needs a block chain check on stories before they are released to prevent fake news or misinterpreted news.
1 Bitcoin equals 8950.17 US Dollar

Seriously people, these "coins" will go in and out of favor because there is nothing supporting them. If some deep pockets motherf-ckers decide to embrace a different coin, people will run to it and walk away from Bitcoin. Any billionaire can move this false market on a whim. Any large corporation can start talking about "Derpcoin" and it will become the next standard.

At this point, investing in this mess is best done with found money or cash you can afford to lose.

Sadly it might take institutional oversight to prevent irrational swings. Which is the exact thing they were trying to avoid creating these "coins" in the first place.
 
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