In addition to distributed storage projects such as Filecoin,Arweave and Crust, it is also worth knowing.

FIL, which has a city but no money, is rising all the way. FIL has risen 308.19% in March, according to MyToken.

After several delays in the main online time, according to the latest official response from Filecoin, the “due date” was set for August 31-September 21, which led to the whole market. At present, at least 40 exchanges, including, BiKi and LBank, have launched FIL futures. This scene of “there is a city without money” has led to a new height of the concept of distributed storage.

Throughout the first half of 2020, affected by the epidemic and other factors, after the production of Bitcoin was reduced, the hot spot of the whole market gradually lost, and the entry of incremental funds was not optimistic. There is a lack of high-quality new projects in the primary market, and funds are also constantly looking for new entrances. Just before and after the online test of the second phase of Filecoin, Filecoin has received widespread attention from chain rings, coin rings and mining circles, and many mainstream institutions have laid out distributed storage one after another, and the market is unprecedentedly hot, which makes the flow of funds in this direction more and more obvious.

“distributed storage” has become one of the few hot concepts in the industry. To put it simply, decentralized storage stores files or file sets on disk space provided by different suppliers through distributed storage technology, which has become one of the better infrastructure for distributed technology. In the traditional cloud storage service, there has been a logical and complete storage business model, which makes some traditional investment institutions also understand this business logic and bring incremental capital.

The point-to-point transmission mechanism of decentralized storage makes full use of the characteristics of blockchain to stimulate the whole storage market, which is naturally consistent with blockchain technology, in terms of distributed storage structure, data certainty, transparency, privacy protection and so on. are far better than centralized storage, making this track full of imagination.

However, as the main Filecoin network is not online yet, some application effects still need to be verified. In fact, in addition to IPFS Ecology and Filecoin projects, there are still some well-textured distributed storage projects that have their own competitive advantages to face the trillions of data cloud storage market. Today, we focus on collating and taking stock of the existing ecology of distributed storage.

Hot item Filecoin.
Filecoin is one of the hottest projects in the field of distributed storage. Filecoin established its project in 2017 and built a decentralized storage market on IPFS through the Token incentive model, which is sought after by large investment institutions. At that time, the fund-raising amount reached 257 million US dollars, making it one of the largest ICO in the history of blockchain.

IPFS is an underlying protocol of the Internet, which aims to create a more open, fast and secure Internet, using distributed hash tables to solve the problem of data transmission and location, and to carry out point-to-point transmission, in which the structure of storing data is hash chain. Filecoin aims to provide a lower-cost storage network. Here, miners’ contribution to the overall network is to provide storage space and network bandwidth, users pay to use storage space and network bandwidth, and Filecoin acts as a resource trading market.

The technical difficulties of Filecoin are data holding proof, prevention of cheating and attack, and zero knowledge proof. Filecoin has the choice of consensus mechanism, and protocol labs do not want to build consensus by consuming computing resources and energy like Bitcoin.

However, due to a long period of market speculation, the current Filecoin market is accused of being mixed. Investors who are conservative about Filecoin believe that Filecoin’s mining code has not yet been finalized and that many aspects are still uncertain. Coupled with the current market to buy only futures, in the face of the upcoming market test, Filecoin risk still exists.

Boca Ecological Project Crust Network.
Crust Network is an applied public chain that encourages decentralized cloud services. Since June, due to the increase in the popularity of the distributed storage concept, the Boca Star project Crust Network, which also focuses on the distributed storage track, has received attention from the encrypted community, investment institutions, Boca ecology and other aspects.

In March this year, Crust AlphaNet developed and tested the online line. The test network includes the GPoS (Ganranteed proof of stake) consensus agreement guaranteed by storage resources, the storage capacity proof based on TEE technology, and the corresponding blockchain browser and example cloud disk. It has been well evaluated by miners and users.

Crust implements the incentive layer protocol of decentralized storage, adapts to a variety of storage layer protocols, including IPFS, and provides support for the application layer. At the same time, Crust’s architecture also has the ability to support decentralized computing layers, building a broader distributed cloud ecology.

At present, there are two key problems in the incentive layer of decentralized storage: proof and motivation. Compared with Filecoin,Crust, Crust greatly reduces the time required to prove the algorithm, and provides a new solution for distributed storage.

In the direction of proof, the replication of Filecoin proves that (PoR) and space-time proof (PoSt) are the technical focus. However, according to the latest test network data, the complex proof algorithm brings a lot of computational overhead and requires high memory requirements for storage nodes. In response, Crust introduced a more novel TEE technology and designed a meaningful workload to prove that the proof process of (MPoW), is simpler and more efficient than that of Filecoin, and can support most personal computers. In this way, Crust greatly reduces the cost and threshold for its users to enter distributed storage.

In terms of incentives, the out-of-block reward of Crust is proportional to the mortgage amount of each node, while the upper limit of mortgage amount of each node is limited by the storage resources and workload provided by the node. This is different from Filecoin’s PoW Base model of “more work, more pay”. The GPoS consensus of Crust is PoS Base, and Crust avoids the centralization of PoS very well.

After better solving the two major problems of proof and incentive of decentralized storage, Crust has made a special design on private data cloud storage. Crust prepares a user-friendly Crust Cloud client (Crust cloud disk) and an Crust SDK (S3-like interface compatible with the enterprise data platform, which is used to encapsulate node selection, redundant backup, retrieval acceleration, metadata management and other functions. The key point is that if privacy is configured, the access to private data will be encrypted throughout the process.

The characteristic distributed storage project, represented by the Crust project, develops with the trend, and has more advantages in privacy data encryption, reducing the occupation of network resources, compatible protocols and so on, and has an impact on the traditional cloud storage market.

At the same time, it should be noted that the proof mechanism of Crsut is based on TEE technology, so it depends on the development of TEE technology to some extent. In addition, Crust and Boca ecology are related to each other, Boca ecology develops smoothly, Crust will also benefit, but if Boca ecological development is not as expected, Crust may also lose its ecological advantage.

Permanent storage Arweave.
Unlike IPFS’s decentralized storage and Crust’s decentralized cloud services, Arweave focuses on permanent storage. Arwaeve focuses on the current problems of limited freedom of speech, over-censorship and easy tampering on the Internet, creating an agreement to pay an one-time fee and obtain permanent file storage. A storage solution called Permaweb permanent network is provided, which takes advantage of the untamperable feature of the block chain to directly write the content to the block for storage.

The main network of Arweave was launched in June 2018. The project uses access proof (Proof of Access, POA) to encourage miners to store history forever and share it according to requirements, and miners receive awards not only for new blocks, but also for random old blocks in the storage chain. The RadomX algorithm is adopted in the mining of Arweave, on the basis of which the parameter of block integrity rate is introduced.

At the same time, many community developers have also pointed out that the application scenarios of Arweave certificates are relatively narrow, and most of them are currently stored with screenshots of anti-government comments on Twitter. At the same time, the characteristic of Arweave is that it can never be tampered with, which increases the difficulty of program development.

Ethernet Square Project Storj.
Storj is a distributed cloud storage protocol based on Ethernet Square. Its Storj permit, which is based on the ERC20 of Etay Fong, has received 3 million US dollars of seed investment from Google Ventures, Ionic Security, Cockroach Labs and so on.

The core of the platform is that its users and communities act as nodes. Users manage data through private keys and provide data storage and bandwidth for the platform. STORJ tokens are used in exchange for storage space.

Similar to Filecoin, Storj uses distributed data storage systems to solve the main problems of traditional cloud servers: reducing the risk of data loss caused by hacker attacks, network-wide downtime or power failure of centralized systems, and so on. On the technical side, Storj emphasizes “strong stability” storage. Storj is the first to divide storage tasks into Storj, corresponding to each award to ensure the stability of the storage network and encourage service providers to carry out their activities in an orderly manner.

Storj uses file fragments to break up and store data, and protects it by encryption on both sides of P2P. Compared with Siacoin,Storj, it tends to be decentralized and promotes the orderly and unified cloud storage platform of distrustful computers, but it is limited by Ethernet itself. At the same time, Storj relies on Ethernet square network to pay for gas, which generally consumes high energy and has a single processing logic.

Veteran project Siacoin.
Siacoin is an established decentralized storage project. A white paper was released in 2013, which attracted a large number of private equity financing and successfully raised $1.65 million. The main way Siacoin works is to make money by allowing users to “rent” their unused hard drives. It splits the data, encrypts it, and then distributes the split and encrypted data through its decentralized network.

In a Sia system, no device has the entire file, and each file is backed up on multiple node devices, so a single device fails and the file is not lost. Siancoin is very similar to Filecoin in this respect. The main competitive advantage of Sia lies in the lower price of its data storage, which is more favorable than choosing giants such as Google, Apple, Amazon and so on.

The technical logic of Sia is that anyone can act as a data center as long as there is enough hard disk space. Intelligent contracts and workload proof protocols ensure the reliability of data providers and incur losses when users are unable to provide the storage space they need. Sia developers do not have to bear the cost of centralized servers and are able to maintain low prices for data storage. But at the same time, part of the community believes that this does not pay enough attention to data security issues, and there is a risk of systemic failure.

In the second half of 2019, Sia received another $3.5 million in financing, and its valuation has shown a rational return and weakness. This year, Sia Network plans to launch streaming and storage services in the summer.

Wave field ecological BTFS.
The decentralized data storage network BTFS, which originated from BitTorrent open source technology, has recently completed the main online line.

It is worth noting that the BitTorrent mentioned here came out as early as 2001 and is a very early decentralized storage project. In 2019, BitTorrent announced the release of the BitTorrent file system (BTFS). Filecoin and BTFS have begun to compete with each other on decentralized storage networks. Until June 2018, Wavefield Tron acquired BitTorrent, for $140 million to connect Wavefield Ecology with BitTorrent.

Both BTFS and IPFS benefit from the technology of BitTorrent, but the difference is that BTFS is directly based on BitTorrent and built on the network. In the official description, the BTFS file system is not only a protocol, but also a network application, which provides a point-to-point content addressable mechanism for storing and sharing digital content in a decentralized file system. At the same time, it also provides a basic platform for decentralized application (Dapp). At present, BTFS is closely related to wave field ecology to some extent.

Sun Yuchen, founder of TRON, also gave BTFS more imagination. He once said in an interview: “this year, wave field TRON will have more DeFi applications in the areas of payment, lending, stable currency, decentralized exchange, decentralized wallet and so on. BTFS will make the most important decentralized storage link. “

At present, storage technology is still developing and updating. The new decentralized storage track based on blockchain technology has become the cornerstone of Internet storage in the future. With the “new infrastructure” strategy put forward by the country, from the industry to the company and then to the government, the new infrastructure ushered in the development wind, with the continuous development of Filecoin, Crust, Sia, Arweave, BTFS and other projects. Cheap and efficient storage, network acceleration and edge computing will become a new choice for enterprises in the future.