A METHOD AND SYSTEM FOR SECURING COMPUTER SOFTWARE USING A DISTRIBUTED HASH TABLE AND A BLOCKCHAIN (patentscope.wipo.int)

A computer-implemented method (100) and system (1) for determining a metadata M for securing a controlled digital resource such as computer software using a distributed hash table (13) and a peer-to-peer distributed ledger (14). This is a blockchain such as the Bitcoin blockchain. The method includes determining (110) a data associated with the computer software and determining (120) a first hash value based on the computer software. A second hash value based on the data and the computer…

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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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