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.
Aelf is the versatile business blockchain platform powered by cloud computing and the central nervous system for businesses, transforming the way they deliver their services. By laying out the fundamental blockchain infrastructure, Aelf enables businesses to focus on building up their own dapps on their own chains with minimum effort. Acting as the master key, Aelf unlocks the potential for inter-business communication and collaboration using cross-chain efficiency. Incorporating modern technologies such as cloud nodes and parallel processing, Aelf is the blockchain system that achieves secure transactions at commercial scale. Aelf is one of the cryptocurrencies that is attracting crypto enthusiasts following its massive commercial adoption initiative. The coin seems to be leading on the technology front with higher blockchain efficiency, which is why it's also anticipated to be the Linux of Blockchains. aelf is an operating system for blockchains which can be customized by their respective users. Its cryptocurrency is denoted by the symbol ELF, with a total supply of 250 million ELF. It was launched on 21 December, 2017 on multiple exchanges in China without any ICO and instead got private investors on board. This ensured better compliance as KYC was done for all investors with most of them being accredited, with a good track record in token investment. Aelf was developed by Ma Haobao, who is also the CEO of Hoopox. The team is backed by a strong advisory board which includes Michael Arrington (CEO of TechCrunch and founding partner of FGB Capital). The team says it is working on unleashing the blockchain’s potential into mass applications and industries. aelf is now working with Innovation Alliance for increasing the acceptability of blockchain technology which will ultimately increase adoption of aelf’s blockchain. The team is focussed to develop aelf to improve other chains in the ecosystem by providing a template and infrastructure for interaction between the sidechains. Aelf also has a rewards system – Candy. With the Candy rewards system, you earn points, convertible for ELF, by accomplishing simple, daily tasks. Tasks include liking and replying to aelf tweets, inviting people to the Telegram channel, and other promotional activities. ELF are currently ERC20 tokens. As such, you can store them in any wallet with ERC20 support like MyEtherWallet or Exodus. The Ledger Nano S is also a great option if you’re interested in additional security. Aelf is a relatively new competitor in the dapp platform race but already has solid support from large investment capital firms. The project is utilizing resource separation through side chains and a unique governance model to build an entire blockchain operating system.