Theta(THETA币)是THETA network项目的以太坊代币。THETA network项目隶属Theta Labs公司，是一个新一代基于原生区块链技术的去中心化视频流媒体平台，平台为分享带宽的内容观看者发放THETA代币奖励，提供高清流程的视频内容，降低视频分发成本。
Theta (THETA coin) is the THETA network project, which is owned by Theta Labs, a new generation of decentralised video streaming media platforms based on raw block chain technology, which distributes THETA tokens to content viewers sharing bandwidth, provides high-quality video content and reduces video distribution costs.
Theta Network旨在开发更有效的方法，通过一个有偿的点对点网络，在全球范围发放任何类型的内容和数据。Theta区块链利用原生代币，激励个人用户共享富余算力和带宽资源，作为视频流的缓存或中继节点。该机制能够提高视频流质量，解决“最后一里”传输问题——传统信息传输通道的主要瓶颈，尤其对于超清高码率的4K、8K视频和下一代视频流。
Theta Network aims to develop more effective ways to distribute content and data of any type globally through a paid point-to-point network. Theta block chain uses native currency to stimulate individual users to share surplus and bandwidth resources as a buffer or relay node for video streams. This mechanism can improve video flow quality and solve “ last ” transmission problems & mdash; & mdash; and the main bottlenecks in traditional information transmission channels, especially 4K, 8K videos and next generation video streams.
有了足够的网络密度，大部分观众可从对等缓存节点中抓取视频流，视频平台得以显著降低内容传输网络(CDN)的成本。Theta Network引入终端用户代币奖励机制，目的是协助视频平台吸引观众、增加收入，提供与别不同的内容和观看体验。
With sufficient network density, most viewers can capture video streams from reciprocal cache nodes, and video platforms can significantly reduce the cost of content transfer networks (CDNs). ThetaNetwork introduces end-user token incentives to help video platforms attract audiences, increase revenue, and provide different content and experience.
Theta Labs为SLIVER.tv旗下的全资子公司。SLIVER.tv是一个领先的电竞直播平台，每月活跃用户超过100万。Sliver.tv获得硅谷顶级风投1700万美元融资，投资者包括丹华资本、DCM Ventures、Sierra Ventures、Venture Reality Fund、领先的好莱坞/媒体投资者Creative Artists Agency, BDMI，Greycroft GC Tracker，Advancit Capital以及两家日本手游公司GREE和Colopl。
Theta Labs is a fully-owned subsidiary under the SLIVER.tv flag. SLIVER.tv is a leading electric live broadcast platform with more than 1 million active users per month. Silver.tv has been financed by the Silicon Valley Top Wind for $17 million. Investors include Danhua Capital, DCM Ventures, Sierra Ventures, Venture Reality Fund, the leading Hollywood/media investor, Creative Arts Agency, BDMI, Greycroft GC Tracker, Advancit Capital, and two Japanese hand-run companies, GREE and Colopol.
该公司拥有四项专利，包括针对360度VR流媒体生成高效球形视频的专利。另外，Sliver.tv拥有专利技术将观众带入到360度VR虚拟世界中，使观众能够任意切换视角观看电竞游戏视频，以鼓励更多的互动。
The company has four patents, including one for the 360-degree VR stream media to generate high-efficiency spherical videos. Furthermore, Silver.tv has a patented technology to bring viewers into the 360-degree VR virtual world, allowing viewers to switch their views freely to video games in order to encourage more interaction.
问题与挑战--流媒体直播的现状
Problems and challenges -- current status of live streaming media
1、低质量的视频流
1. Low-quality video stream
现今的内容分发网络覆盖面有限，让全球许多地方无法享受到流畅、高质量的视频。
Today, content distribution networks are limited in coverage, making fluid and high-quality videos inaccessible in many parts of the globe.
2、成本高昂的流媒体分发基础设施
2. Cost-effective flow media distribution infrastructure
平台承担了运营内容分发网络的高昂成本，只能将较少的收入留给内容创作者。
The Platform bears the high cost of operating the content distribution network, leaving only a small amount of revenue to content creators.
3、中心化、效率低下的生态系统
3. Centralized, inefficient ecosystems
中心化的大环境意味着只有较少的收入会返还给内容创作者，造成了创新的匮乏。在现有的生态系统中，观众忍受着低质量的视频流和微薄的奖励。平台和广告商夺走了大部分的 奖励。内容创作者本应该获得更好的待遇。
Centralized environments mean that only a small amount of income is returned to content creators, creating a lack of innovation. In existing ecosystems, viewers endure low-quality video flows and thin rewards.
1、观众赚取Theta币作为奖励
1. Theta coins earned by the audience as an incentive
观众现在可以赚取Theta币，作为共享带宽和资源的直接奖励，并且可以将它回馈给创作者。
An audience can now earn Theta coins as a direct reward for sharing bandwidth and resources and can give it back to the creator.
2、高质量、流畅的视频流
2. High-quality, fluid video stream
点对点、去中心化的内容发布网络在全球范围内高效地传输视频流。
The point-to-point, decentralised content distribution network efficiently transmits video streams worldwide.
3、传输视频流的成本得以降低
3. Reduced cost of transmission of video stream
出版商和内容创作者不再需要开发昂贵的基础设施，因而可以专注创新，并尝试新颖独特的商业模式。
Publishers and content creators no longer need to develop expensive infrastructure, so they can focus on innovation and try innovative and unique business models.
最后，由于传输视频流的成本显着下降，用户成最大受益者。内容创作者和平台都可以获利更多。
Finally, as the cost of transmitting the video stream is significantly reduced, the user becomes the largest beneficiary.
1、技术改进
1. Technological improvements
•为去中心化流媒体网络(DSN)量身打造的全新区块链技术
& Bull; new block chain technology tailored for decentralised stream media network (DSN)
•创新点包括面向资源的微支付池(Resource Oriented Micropayment Pool)及参与证明机制(Proof-of-Engagement)。
& Bull; Innovation Point includes Resource-Oriented Micropayment Pool and Participation Certification Mechanism (Proof-of-Engagement).
2、流媒体生态系统
2. Fluid media ecosystems
•Theta币作为一种长期、可持续的奖励机制，激励所有利益相关者参与到去中心化视频流网络之中。
& Bull; Theta coin as a long-term, sustainable incentive to engage all stakeholders in decentralised video stream networks.
•对于去中心化的直播来说，Theta是唯一的同时提供技术和经济解决方案的端对端解决方案。
& Bull; Theta is the only end-to-end solution for decentralised live broadcasts that simultaneously provide technical and economic solutions.
Theta区块链的科技创新包括：
Scientific and technological innovations in Theta block chains include:
• 基于声誉的挖矿(Reputation Dependent Mining)：在Theta协议中，缓存节点扮演区块链矿工的角色。区块奖励不是常数，而是基于于开采该区块的缓存节点的声誉得分。为了获得更多的挖矿奖励，矿工们需要通过向下游观众传递视频流来提高其声誉得分。
& Bull; Reputation Dependent Mining: In Theta agreement, the Cache Node plays the role of block chain miners. The block reward is not a constant, but is based on the reputation score of the cache node from which the block is mined. To get more mining rewards, miners need to improve their reputation by transmitting video streams to downstream audiences.
• 全局声誉共识(Global Reputation Consensus)：我们提出一种机制，使Theta网络中的每一个缓存节点的声誉得分都可以获得全局共识。声誉得分可以通过基于哈希谜题最小化问题(hash minimization)的服务证书快速计算。由此，每个区块奖励都可以获得全局共识。
& Bull; Global Reputation Consensus: We propose a mechanism whereby the reputation score for each cache node in Theta network can be obtained on the global level. The credit score can be calculated quickly through a service certificate based on the Hash minimation.
• 参与度证明(Proof-of-Engagement)：我们引入了一种全新的用户参与度证明机制，通过在视频流嵌入哈希谜题(embedded hash puzzles)的方式证明观众的确观看了视频流，从而让广告商的每一分钱都花得更清楚更透明，也为观众通过观看视频获得Theta代币奖励提供了基础。
Proof-of-Engagement: We have introduced a brand-new user participation certification mechanism to prove that the audience actually watched the video stream by embedding the video stream into the Hashi puzzle, thereby making it clearer and more transparent for advertisers to spend every penny and also providing a basis for viewers to receive Theta tokens by watching the video.
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