VeriCoin (VRC) is a Proof of Stake-Time cryptocurrency. It was previously a Proof-of-Stake cryptocurrency with Proof of Work used to mine coins in the early stage. VeriCoin began work on PoST after the MintPal VRC hack and the subsequent roll back. More information on Proof of Stake-Time can be obtained by reading the whitepaper here. There is no Pre-mine or IPO for VeriCoin. The minimum stake time is at least 8 hours. The one highlight feature of VeriCoin is VeriFund. VeriFund is the answer to ensure stability and growth of VeriCoin. It is used to counter the inflationary effect of the proof of stake. When the supply increases, VeriFund will purchase liquid supply of VeriCoin to ensure growth and stability of the coin's value. More info about VeriFund can be found at http://vericoin.info/verifund.html Another key feature of VeriCoin is VeriSMS. VeriSMS is an SMS wallet system that gives your phone capability to access the VeriCoin network. Some of the available commands include 'Balance', 'setpassword', and 'SEND'. More information about VeriSMS can be found at http://vericoin.info/text.html
Theta is a decentralized video delivery network, powered by users and an innovative new blockchain. Theta is an open source protocol purpose-built to power the decentralized streaming network and will allow for vertical decentralized apps (DApps) to be built on top of the platform to enable esports, music, TV/movies, education, enterprise conferencing, peer-to-peer streaming, and more. SLIVER.tv’s DApp will be the first application built on the Theta network leveraging its existing user base of millions of esports viewers. DSN and the Theta protocol solve various challenges the video streaming industry faces today. First, Theta tokens are used as an incentive to encourage individual users to share their redundant memory and bandwidth resources as caching nodes for video streams. This improves the quality of stream delivery and solves the “last-mile” delivery problem, the main bottleneck for traditional stream delivery pipelines, especially for high resolution high bitrate 360° virtual reality (VR) streams. Second, with sufficient amount of caching nodes, the majority of viewers will pull streams from peering caching nodes. This significantly reduces content delivery network (CDN) bandwidth costs, which is a major concern for video streaming sites. Lastly, the Theta network greatly improves the streaming market efficiency by streamlining the video delivery process. For example, advertisers can target end viewers at a lower cost and reward influencers more transparently.The Theta blockchain introduces three novel concepts: Reputation Dependent Mining: In the Theta protocol, the caching nodes play the role of miners in the blockchain. The block reward is not a constant, but depends on the reputation score of the caching node that mined the block. To obtain more mining rewards, miners not only spend computation power to mine blocks, but also relay video streams to downstream viewers to increase their reputation scores. Global Reputation Consensus: We propose a mechanism for the Theta network to reach the global consensus on the reputation scores for each caching node. Proof-of-Engagement: We introduce a novel Proof-of-Engagement scheme to prove that viewers legitimately consume the video streams, providing better transparency to advertisers and a basis for viewers to earn Theta tokens for engaging with the content.