Is there a chart comparison of all the types of blockchain data storage crypto currencies for decentralized / distributed data as of April-2017?

I know there are a bunch of blockchain data storage crypto currencies. But I was wondering is there a comparison of how each of them differ from one another. What are their attributes and limits?

So far I know of Sia, Maidsafe, Storj, IPFS, and Nxt Data Cloud.

I know some of them require you to either contribute to the network or pay a fee to rent space from others. But which ones are persistent where you can upload once and forget about it without constant maintenance?

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Where did I went wrong with this comparison?

I am trying to buy hash from nicehash and sell that to some pool in

I tried to match the price in nicehash and coinwarz but it seems that things don’t add up.

equihash for example, is 3 bitcoin per megasolution day. Now If I put 1000000 sol per second the coinwars will say I’ll be making 668 bitcoins.

How do I compare this easily?

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Zetacoin and bitcoin comparison.

Recently, I downloaded a desktop wallet for “ZETACOIN”. I am still synchronizing the wallet and it seems like its taking a lot of space. Apparently, there have been mined already over 6 million blocks and that’s what I am downloading. Can anybody tell where I can find information about Zetacoin and whether this is true or not because it just seems like its a big blockchain.

Thank you.

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How do traditional transactions take place (paypal, banks, etc) in comparison to Bitcoin transactions?

Here we talk about bitcoins and blockchain. It is said they are more secured, and people ask questions about how they are implemented.

Since I am a complete newbie to blockchain, and I don’t know neither how traditional transactions platform works, I would like to know if there is a comparison between blockchain and, for instance, paypal’s transactions system.

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