Nxt uses the blockchain to create an entire ecosystem of decentralized features, all of which require the Nxt currency. Instead of modifying the original Bitcoin source code, as many altcoins have done, Nxt developers wrote their own code in Java from scratch. While Nxt is a public blockchain, licenses for private blockchains based on its software are also available for purchase. The developers refer to Nxt as Blockchain 2.0, providing numerous applications beyond simply keeping a public ledger of transactions. Jelurida BV took over the originally anonymously developed Nxt and now own the IP rights. Kristina Kalcheva, co-founder and legal expert of Jelurida, focuses on how to “explore the different open source licensing models and their enforceability in practice.” Currently, the main developer is an anonymous Star Trek fan, going by the name Jean-Luc Picard. While there is still the active development of Nxt, the parent company Jelurida is also working on a Nxt 2.0, known as Ardor, designed specifically to deal with scalability. Ardor will use the same blockchain technology as Nxt, combined with the idea of ‘child chains.’ According to Travin Keith, Nxt foundation Web and Marketing manager, Ardor allows for a “manageable blockchain size, which solves the problem of scalability by separating transactions and data that do not affect security from those that do, and moving all of those that don’t affect security onto child chains.” The core infrastructure of Nxt is complex. This adds risks as compared to the more lean bitcoin, but makes it easier for external services to be built on top of the blockchain. A peer-peer exchange allowing decentralized trading of shares, crypto assets. Since the blockchain is an unalterable public ledger of transactions, the Asset Exchange provides a trading record for items other than Nxt. To do this, Nxt allows the designation or ''coloring'' of a particular coin, which builds a bridge from the virtual crypto-currency world to the physical world. The ''colored coin'' can represent property, stocks/bonds, commodities, or even concepts. Arbitrary Messages enable the sending of encrypted or plain text, which can also function to send and store up to 1000 bytes of data permanently, or 42 kilobytes of data for a limited amount of time. As a result, it can be used to build file-sharing services, decentralized applications, and higher-level Nxt services. Nxt had no mining phase, all initial units were released to 73 people through a one-time fundraiser via bitcoins, after the announcement of the NXT project in the bitcointalk-forums by BCnext. Combine this with a PoS approach, and you have a situation where the big guys run the table. At one point, the Nxt community had a very public spat with Bitcoin developer Jeff Garzik. Garzik took issue with the Nxt marketing approach, its anonymous developers, and their responses to constructive criticism. Nxt responded to some of these claims, of course, but it remains one of the more controversial moments in its history. Another key problem the Nxt network ran into (like so many others) was blockchain bloat. Nodes get weighed down by the onerous task of having to store every transaction on the Nxt blockchain. This was one reason (among others) why Ardor/Ignis came into existence.'
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.