I like that you plan to reserve 20% of the transaction fees as an insurance funds. Waiting for your whitepaper ...

What is circuit breaker mechanism? No other exchanges support this?

How transparent are other exchanges?

Given the hack on bitfinex, is there any exchanges that do not hold coins? This could prevent a large scale hack. For example, BTC/ETH exchange. After the transaction, the exchange will transfer coin out immediately.

Just looked at blockinfo. blockinfo only support android. I only have iphone. Any other alternatives, either iphone app or website?

Any website that allows me to enter the amount of my multiple altcoins and shows me the total dollar amount and tracks the value of the portfolio?

New Bitcoin is minted for miners, but the success of a crypto-currency is mainly contributed by its developers. However, bitcoin does not award this achievement, and hence I think it cannot create new values in the long term.

I am planning to start a new coin that can award its developers. It is open source and starts from scratch. The idea is that, when a developer successfully commit the code, he is automatically get awarded.

This idea can also be extended to the new DAO concept. Imaging one day, all the software developers do not work for a software company, but work on open source and get awarded, e.g open source web project, open source search engine, and all the open source apps.

To successfully run a web project, it only needs domain registration and web hosting, which is connected to the smart contact. The web app can be charged by crypto-currency, and the income can then be automatically redistributed to all the stakeholders.

If you are interested in this concept, please contact me and we can discuss how to implement the idea.

We are not competing with Ethereum, since they are still minting the coin by PoW or PoS, but the main difference of the new coin is that, most of the coin is minted for the developers for long term success.

Why this is important? Does proof of stake solve the problem? Are you thinking proof of work is inferior than proof of stake? Advantage and disadvantage of different Proof of X?

With the success of bitcoin and ethereum, I am wondering what could be the next most demanding cyptocurrency and blockchain feature? I will compile and summarize the answers here as well.

To me, it looks that bitcoin is undervalued based on the number of startups on bitcoin. I guess the total investments on these startups is over 100M. Adding the value of total mining hardwares, minus the lost bitcoins. In addition, the drawdown is very close to the historical maximum.

If people breaking up wallets and did not spend, the dormancy starts with the time of breaking.

A description is on http://www.dormantbitcoin.com/dormantbitcoin/dbchart/.

A bitcoin address is called dormant since its last sending block. Accordingly, all its bitcoins are said to be stayed in that block. If an address has never sent, the first received block is considered as the starting of the dormancy. In the Dormant Bitcoin (DB) chart, the X-axis is the block range, and the Y-axis is the number of bitcoins staying in the corresponding block range.

If an address is dormant for a long time, it is very likely that the owner losts the key, and hence bitcoins. With this chart, the picture of the dormancy of all bitcoins becomes clear. Also, total lost bitcoins could be guessed. Knowing this information is very interesting, since existing bitcoins are more valuable if more bitcoins are lost. As shown in the chart, most of early-age bitcoins are dormant, since miners do not care them due to low values.

In addition, although most of middle-age bitcoins are spent, a small fraction of them is stayed. This information is more important, since it gives the answer on bitcoin lost rate when people cares. It can give us a guidance on how many bitcoins WILL be lost in the future.

Let's back to the one of the fundamentals that determines the bitcoin price. That is related to the cost of miners.

The miner won't sell for their bitcoins under their cost. However, it seems that current bitcoin price is well below that cost.
How can you explain that?

I recently realized that Canadian banks charge 2.5% on credit card for oversea transaction. That may be the promising usage for bitcoins for its low transaction fees. This is in contrast to the local transactions. Why people first convert USD to bitcoins to buy something in US, right?

I think technically, it is implementable. That is, bitcoin owner can state somewhere in the block chain that bitcoins in that address cannot be sent, which can add one more level of security. Also, the owner can voluntarily reveal his identity in public, or to a trusted third party.

Anonymity should be an added feature, not a mandatory feature, and that will improve the overall security.   

According to dormant bitcoin chart at http://www.dormantbitcoin.com/, we can see that the last two bars are very close. Approximately 20% of the bitcoins in wallets which have sent some bitcoins between block 270000 to 28000, but did not sent anything since block 280,000. This percentage is historically high, since historically the percentage of the second last bar is around 10%, which indicates that more bitcoins are dormant in recent months. A complete picture can also be seen in http://dormantbitcoin.com/dormantbitcoin/panorama/.

Well, this observation is a little bit counter intuition of mine, since bitcoin should be more active with the growing popularity.

People are hoarding bitcoins and thinking they can be richer counting on bitcoins?

Or the dormancy is due to the recent price drop?

The bottom line is that, I personally are hoarding bitcoins. I am always buying and never selling and bet the the price will go up further.

Is this true?

Mystery again. How they value the missing 744K bitcoins and come with the number of debt only 63M?

How much did Kevin make on transaction?

+1.

You are not keep the coin, but the private key in the wallet. The wallet software has a copy of your private key,
so it can send on behalf of you. If your computer is compromised, so does the wallet and your key.
The information on how many coin do you have is in the block chain. All the transaction history is there, and the
wallet calculate how many bitcoin you own based on that information.