Mikko Ohtamaa
  • Member for 8 years, 7 months
  • Last seen more than a month ago
Is the threat of computer malware to steal Bitcoin exaggerated?
18 votes

Currently attacks against Bitcoin users can be categorized as "Normal" keylogging malware which stoles credentials to Bitcoin sites and steals Bitcoins from your online wallet (unless you have two-...

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Why does bitcoin have so many digits if I cannot move anything freely under 10000 satoshi?
Accepted answer
16 votes

My assumption is that the limitation is set by BlockChain.info itself, to protect the non-educated users for doing transactions which may take days to confirm. However raw Bitcoin protocol supports ...

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Why is the disappearance of Mt Gox a problem?
14 votes

People had bitcoins loaded on Mt.Gox internal trading accounts (trading wallets). This goes both for fiat currency and bitcoins. Bitcoin withdrawals were shut-down for a few weeks now, which created ...

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What is the best way to purchase Bitcoins quickly?
7 votes

On LocalBitcoins.com you can get bitcoins bought under one hour. Just pick a trader who has good reputation (not a scammer) and low response times.

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How are transactions broadcast to the rest of the network?
5 votes

The bitcoin daemon makes the transaction with the source address and the destination address then broadcasts the transaction to the network. The Bitcoin miners confirm the transaction and include it ...

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How can an online wallet be more secure than paper wallets or cold storages?
Accepted answer
5 votes

I tested it by creating a secure wallet on BitGo. They gave a multisig address for deposits. 2/3 of keys are needed to withdraw Bitcoins. BitGo holds one key, you get private key and backup key. You ...

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Send Bitcoins back where they came from
Accepted answer
5 votes

So called "block chain based refund" is not reliable with bitcoin. The sending wallet may be a shared web wallet (blockchain.info, MtGox, e.g. any web site) and thus you cannot guarantee that any of ...

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How do I buy Bitcoins safely face-to-face?
5 votes

LocalBitcoins.com features a transaction service which guarantees that bitcoins have arrived to your LocalBitcoins.com wallet. You get a secret code when the bitcoin seller enables transaction ...

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Is there a forum-like exchange for trading Bitcoins person-to-person?
5 votes

LocalBitcoins.com has person-to-person PayPal trading: http://localbitcoins.com/buy-bitcoins-online/paypal https://localbitcoins.com/sell-bitcoins-online/paypal/ There are also discussion forums ...

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How long would a transaction without fee take to confirm?
Accepted answer
4 votes

Confirming transactions without any fee depends on the Bitcoin miner's goodwill. Because miners won't get any compensation for confirming your transaction, it means they do not have incentive to put ...

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Someone scammed me, and I want my money back. What can I do?
4 votes

If the receiving party is not co-operating you cannot enforce them to return the payment. In this case it is recommended to take the case to your local police and make a crime report of fraud. Most ...

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What would cause the price of Bitcoin to flatline for several hours on Bitstamp?
4 votes

I think this was "Bitcoin Sell Wall of Death" at Bitstamp. Somebody sold 31 000 BTC at 300 USD. The wall was eaten over Sunday-Monday night. https://www.cryptocoinsnews.com/bitcoin-sell-wall-death-...

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How do I transfer BTC in cold storage?
Accepted answer
3 votes

I have successfully used Electrum wallet with cold storage. I found this one of the most novice friendly options, though getting money out from the cold storage is still quite a complex task. ...

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Is it possible to know the total hashpower backing a currency?
Accepted answer
3 votes

Yes. Generally cryptocurrency network mining difficulty is dynamically adjusted by the current available hashing power. Thus, the hashing power must be known. This information is usually disseminated ...

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How does one checks which customer made a payment?
3 votes

Different orders have different Bitcoin payment addresses. The order is paid when the address in question receives the requested amount of Bitcoins.

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Launder cash using bitcoin atms
3 votes

Most Bitcoin ATM vendors require you to identify yourself and track your buys and sells. This is done due to Know Your Customers and Anti Money Laundering regulation. You need to present the source of ...

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Cryptsy account got hacked
3 votes

If there were a serious vulnerability at Cryptsy end affecting all users the accounts were flushed in no time, so I doubt this is an issue with Crypty itself. Otherwise there were already 1000 posts ...

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I want to start my own exchange
Accepted answer
3 votes

Because orderbook based exchanges are not exactly trivial to implement with all necessary security what you are asking is unlikely to happen in business-wise. Even with the best software developers of ...

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Is there some website that aggregates all the Bitcoin exchange prices so small businesses can find out the current market rate and react accordingly?
3 votes

bitcoincharts.com is one of the more popular ones: http://bitcoincharts.com/

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How can I buy Bitcoins with Australian Dollars?
3 votes

LocalBitcoins.com has buy and sell online in AUD and also AUD cash trade: https://localbitcoins.com/country/AU If you buy from a trader with good reputation history and fast response times you can ...

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Make remote RPC connection to bitcoind server secure
2 votes

EDIT: I just noticed your question asks for App Engine specific solution. This solution only applies if you have 100% control over the Linux server running your code, so this does not work on App ...

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Are there any legal implications when using localbitcoins.com?
2 votes

The laws that apply depend on your country of residence. There usually exist some sort of Know Your Customer (KYC) regulation which requires you to check the background if the sum in the trade is ...

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Is there a Bitcoin exchange that accepts paypal and no registration needed?
Accepted answer
2 votes

What you are asking is economically impossible. Such an exchange doesn't exist or they are some sort of scams. Paypal has very high fraud transaction rate due to high availability to obtain stolen ...

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What percentage of Bitcoin use is legitimate?
2 votes

Silk road wallet hold 144,000 Bitcoins. It had 1,2B USD in annual volume. This was 2014. Since then darknet markets have flourished. See Measuring the Longitudinal Evolution of the Online Anonymous ...

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What if my Internet Service Provider decides not to let me send bitcoins?
2 votes

You can write Bitcoin transaction data on USB stick using your private key. Then you go to a Internet provider or country where they do not block connecting to Bitcoin nodes.

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API for converting currency such as Euro/USD to BTC
2 votes

See bitcoin-prices.js library for JavaScript (front end, no server-side components needed) that uses free bitcoinaverage.com API.

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I've tried everything from mining bitcoin to litecoin to other altcoins....why do I have no luck?
2 votes

It is too late to mine any crypto-currency without spending huge amounts of money in mid-2015. Long answer: Due to reasons you mentioned in your question, proof-of-work based hashing power is ...

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If Bitcoin is traceable, how bitcoin scams are exist?
2 votes

Bitcoins can be exchanged to dollars in questionable exchanges like BTC-E or LocalBitcoin. These exchanges are not interested in the source of Bitcoin, do not co-operate with authors (police) and thus ...

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How would an artist be able to sell their own music for Bitcoin?
2 votes

Liberty Music Store is a place to buy and sell music with Bitcoin. It is geared towards simple user experience. The artist can keep 100%. (disclaimer: I am the author)

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What programming language should be used to develop Bitcoin exchange software? Why?
2 votes

A lot of financial industry prefers Python. Some remarkable Bitcoin exchanges, like Bitstamp and LocalBitcoins are built on the top of Python and Django web framework (though there exist other web ...

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