Achain is a public blockchain platform that enables developers of all levels to issue tokens and create smart contracts, decentralized applications, and blockchain systems. Achain is committed to building a global blockchain network for information exchange and value transactions. Unlike Bitcoin or Ethereum, Achain utilizes a modified version of DPoS — RDPoS (Result-delegated Proof of Stake) to establish node consensus. Shortly, DPoS suggests that all coin holders vote for the validator nodes that will produce the next blocks. On the project website, only info about CEO Tony Cui is listed. Cui has a few significant accomplishments, including winning the Future Star award from the Zhongguancun Alliance and being listed in the 30 under 30 on CYZONE, a famous venture capital magazine. On LinkedIn, 51 people are listed as employees at Achain. Most of the team is based in Beijing. Achain also has a few key industry partners. It has even co-organized a “Blockchain Technology Open Course” with Tsinghua University, which is widely recognized as one of the world’s top universities. The roadmap for Achain development is fairly detailed. However, most goals listed are development-oriented rather than marketing or design. Still, it’s important to note that focusing on making the protocol interoperable and building a technology that is more accessible to mainstream adoption could also be considered a marketing-oriented part of this project. There are three major phases with projected completion dates listed. These include Singularity (completed Q1), Galaxy (ongoing), and Cosmos (complete at the end of Q4). One thing to note is that dates for these phases are not consistent between the homepage and the whitepaper. This could be simply due to a scenario in which phase names remain the same while new goals and timeline dates within those phases continue to change. In January 2019, the project will update the website to reflect roadmap goals for the new year. Looking at the current landscape of blockchain projects, Achain certainly offers the possibility of much-needed technical innovations. The ability to easily create an Achain fork, as well as, the protocol’s unique RDPoS consensus algorithm make this a promising project. It will be interesting to see how Achain builds upon its accomplishments, and how the project team continues to develop a long-term strategy for improving the protocol’s technical capabilities and increasing participation in its ecosystem.
The Cosmos network consists of many independent, parallel blockchains, called zones, each powered by classical Byzantine fault-tolerant (BFT) consensus protocols like Tendermint (already used by platforms like ErisDB). Some zones act as hubs with respect to other zones, allowing many zones to interoperate through a shared hub. The architecture is a more general application of the Bitcoin sidechains concept, using classic BFT and Proof-of-Stake algorithms, instead of Proof-of-Work.Cosmos can interoperate with multiple other applications and cryptocurrencies, something other blockchains can’t do well. By creating a new zone, you can plug any blockchain system into the Cosmos hub and pass tokens back and forth between those zones, without the need for an intermediary. While the Cosmos Hub is a multi-asset distributed ledger, there is a special native token called the atom. Atoms have three use cases: as a spam-prevention mechanism, as staking tokens, and as a voting mechanism in governance. As a spam prevention mechanism, Atoms are used to pay fees. The fee may be proportional to the amount of computation required by the transaction, similar to Ethereum’s concept of “gas”. Fee distribution is done in-protocol and a protocol specification is described here. As staking tokens, Atoms can be “bonded” in order to earn block rewards. The economic security of the Cosmos Hub is a function of the amount of Atoms staked. The more Atoms that are collateralized, the more “skin” there is at stake and the higher the cost of attacking the network. Thus, the more Atoms there are bonded, the greater the economic security of the network. Atom holders may govern the Cosmos Hub by voting on proposals with their staked Atoms.