The serviceability of Cloud storage in Storj can reach to about 99.99999%. And Storj comes from the open-source project Metadisk, so its core technology is Blockchain without data center and engine room. By other ways, using the rest hard disk space on each person’s computer. Therefore, the cost is very low, which takes up about 1-2% compared with the current cloud storage. Of course, it is affordable for every Internet user.
If you upload a file, Storj takes files into sections which will be encrypted individually, then all of these can be stored in the disk space of other Internet users. To ensure the immutability of data, Storj uses a data structure called Merkle, which is a hash tree. The strength of such tree is the hash value of each node is related to the following leaf node, so it only needs to compare the hash value of the root node. Of course, there is no need for the hash challenge for the entire data blocks, Storj can use the mixed way(entire block, cut into small loops, certain blocks) to verify the integrity of data. If some blocks are not available(modified or inaccessible), Storj uses the erasure code to reconstruct the data block and store in other nodes. For the P2P technology, the download speed will be faster.
The store also uses GVN (Group of Verication Nodes) to solve the problem of Bitcoin(it need powerful computing capacity to maintain the consensus of the network, and most members should be honest), realize the auditing and payment with no trust.
However, there are still many problems to be solved, in addition to the technology maturity review, the legal and ethical issues still need to be solved.
Company website：https://www.baoquan.com/en/
Contact email：js@baoquan.com
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