Not sure if there are actually serious crypto projects written on Python. Looks like C++ is the strong and respected industry standard.

There is part of the Dash called Sentinel though, that is written on Python, perhaps will be interesting to check out: https://github.com/dashpay/sentinel

Cool idea guys! Good luck with the project. Looking forward to the pre-ICO 

Any type of the investment is a bit of a gambling, as you can't predict what will happen with your money, even though sometimes there is an illusion that you can 

But if he makes new wallets he will still transfer btc from old wallets there. So there will be a trace. Or am i mistaken?

For most of those Internet companies their data is their treasure. Facebook uses data to target ads, Amazon to suggest products you'd want to buy based on previous purchases or views and so on. Sharing their data means giving up core of revenue.

Besides that it doesn't solve any business problems, so what's the point.

It looks like C++ is the dominant language in cryptocurrency/blockchain world, so it will be the best way to go since there are already quite some libraries and opensource projects to look into.

Not the easy one though, but definitely good from the point of performance.

It depends on your knowledge and experience of course, but perhaps learning by example is a good way to start if you're experienced C++ programmer. Since most of the cryptocurrencies are opensource, there is a lot of examples to look into. Here're few classic ones (I believe you can google much more):
https://github.com/bitcoin/bitcoin
https://github.com/litecoin-project/
https://github.com/zcash/zcash

Ethereum has much wider use than Waves. It is the platform for creating smart contracts that can be much more complicated that Waves token.

So Waves is definitely not a competition to Eth.

Looks like ethereum is growing as crazy now. So from your list of coins probably that's the less risky investment that will still bring quite impressive growth results.

There are also few open source projects that implement mining in the browser via WebAssembly. Might be a good starting point:
https://github.com/KamesCG/harvest (base on coinhive code, mines Monero)
https://github.com/MyHush/hushwebminer

I believe Coinhive mentioned above uses WebAssembly to do efficient mining in the browser. Webassembly is a relatively new technology which provides a way to execute compiled C++ code in the browser that runs much faster than Javascript.

So probably if you want to implement mining in a web browser WebAssembly is the way to go: http://webassembly.org/

Usually transactions are not getting confirmed because of the low fees.

Actually I had different vision -- let's say I stole 10BTC from you and everyone can see that transaction. All following transactions from my wallet can be tracked. And eventually one of the child transactions might make it possible to track me back. For example if I ever change BTC from my wallet to USD on exchange that requests identification, exchange will know my personal details and knowing that my wallet was involved in illegal activity will notify somebody (now sure who exactly should do such investigation, but let's call them crypto-police). And crypto-police will do the justice.

Thanks for elaborate answer carlfebz2!

But doesn't blockchain store history of all transactions? So basically if we know that wallet #abc has been involved in illegal activities everyone can see all transaction that were done from that wallet? And perhaps at the end it would be possible to track identity of wallet by one of child transactions.

There are a lot of stories of stolen bitcoins from hacked websites or fooled people.

I was wondering, since all transactions are in blockchain, is it technically possible to make blacklist of wallets where stolen funds where transferred (by claims of victims) to track transfers of those funds and report when the owner can be identified (for example when some goods where bought and delivery address is known)?

Or perhaps just block those blacklisted wallets and don't support them on the network (bitcoin) level?

I think there is indeed a lot of space for fraud. Since you probably would like to use cryptocurreny for exchange (why else would you ask on this forum ) it won't be possible to request charge back or even figure out who are the physical people staying behind the deal.

Unless your system will be a party that makes sure goods are as described and delivers them after payment.

Blockchain is indeed not an easy thing to pick up but should be doable if you have good experience with C++.

Perhaps LiteCoin is worth checking. They have quite active community and all code available on Github: https://github.com/litecoin-project/

MySQL (the same as most of the traditional SQL databases) is not decentralised. It can distribute data among different servers but they should be preconfigured and some of them will have more power than others (usually one or two "master" servers).

Blockchain is on the other hand a "database" that stores copy of data on the computers of all clients (nodes) and has mechanics needed to accept simultaneous writes and synchronise data between nodes.

Technically blockchain is much more difficult to setup and develop upon than centralised databases, so better to avoid using it unless you have a strong reasoning and knowledge.

I feel that even if somebody has economically beneficial way to mine in US they won't sell it as a service but mine their-selfs. What's the point to give away money you can make.

Ah, ok. Thanks for clarification!