This is an informal Chinese translation of the article: Hardfork 20 (“Velocity”) development update
非正式翻译：硬叉19 “平等”即将到来，线性奖励 / Informal translation：HF19 "Equality" Coming Soon: Linear Rewards!
在HF19发布几天之后， @steemitblog 就发布了HF20的消息: Proposing Hardfork 0.20.0 “Velocity”，然而这一等就是半年之久。昨夜 @steemitblog 发布了HF20的开发进展，我将这篇这篇文章大概翻译一下，让大家能对HF20 多些了解。
当前状态 / Current Status
Significant progress is being made with hardfork 20, including some additional changes which will make the Steem blockchain even better. There is no official release date yet, but a release candidate is expected to be ready by the end of the year.
改进监护(点赞)激励 / Improving Curation Incentives
30分钟监护(点赞)时间窗的更改 / Changes to 30-minute Curation Window
As of now, Steem account holders (including bot accounts) are disincentivized by the Steem blockchain from voting on a post within the first 30 minutes. The earlier a vote is made within the initial 30-minute window, the less curation rewards the voting account receives. This was originally introduced to even the playing field between human curators and bots. This was successful but with the rise of more short-form content on the platform (content that can be read or viewed in less than 30 minutes), the community and the witnesses have come to a consensus that the 30-minute rule is taking curation rewards away from human voters who are actively consuming content and voting on material they like. For this reason, HF20 will reduce this window from 30 to 15 minutes.
消除通过点赞获取的自我投票奖励 / Eliminating self-voting rewards through curation
While the change to 15 minutes will even the playing field against bots, it doesn’t address the advantage self-voting gives to accounts with respect to curation rewards. If authors vote for themselves right away, they get their author rewards, 100% of the curation rewards from their vote, plus a portion of the curation rewards coming from everyone who votes for the post after them. Any other curator voting at the same time as the author would get 0% of the curation rewards. This gives the author an unfair advantage over other curators because the author can earn additional curation rewards through self-voting.
In order to eliminate this unfair advantage, the unused portion of the curation rewards will be returned to the rewards pool instead of being awarded to the author, thereby increasing the overall percentage of rewards that will be paid to curators. This will better serve the original mission of the curation rewards budget: to ensure that the Steem blockchain distributes rewards to the most valuable content.
“尘埃”投票改变 / “Dust” vote changes
移除投票尘埃阈值 / Removal of vote dust threshold
The "vote dust threshold" is a rule that prevents the occurrence of extremely weak votes. Currently, accounts must possess about 1 SP in order for a 100% Voting Power vote to be successfully posted to the blockchain. If a vote is placed that is below the required threshold, it will be rejected by the blockchain. This can create a bad user experience for new users, as their votes can fail for seemingly no reason.
“尘埃投票阈值(vote dust threshold)”是为了阻止发生极其弱小的投票所设置的规则。当前，为了成功提交一个100% 投票权的投票，账户必须拥有大约1个SP。低于阈值要求的投票在提交后会被区块链拒绝。对新用户而言，这将导致糟糕的用户体验，因为他们的投票可能会无缘无故地失败。
In hardfork 20, this “vote dust threshold” will be removed. After this change users with any amount of SP will be able to cast votes so long as they have sufficient bandwidth. Votes that are below the threshold will be posted to the blockchain but will have no impact on rewards. This will allow users to have a better user experience on all Steem-based applications by enabling them to vote whenever they want to (as long as they don’t exceed their generous bandwidth allocation), without adding to the computational load on the blockchain by requiring that it calculate the impact of effectively powerless votes on the rewards pool. This also mitigates an attack vector by ensuring that if a malicious actor wanted to overburden the Steem blockchain, making countless small votes would not be an effective strategy.
在所有选票中应用移位 / Application of shift to all votes
The switch to linear rewards in hardfork 19 has had a very positive effect on user experience. HF19 ensured that the impact of each user’s vote on the rewards pool is directly proportional to their Steem Power (i.e. their stake in the platform). Users now feel more empowered, and they can see the direct correlation between the amount of Steem Power they have and the strength of their vote.
在HF19中切换至线性奖励带来了极好的用户体验。HF19确保了每个用户投票在奖励池中的影响和他们的Steem Power(即他们在平台上的股份) 成正比。用户现在感觉更强大了，他们何扣看到他们持有的Steem Power总量以及他们投票力量之间的直接联系。
However, the switch to a linear rewards curve meant that there was less of a disincentive for casting lots of inconsequential votes (“vote spamming”). While it is important for users to be able to earn rewards whenever stakeholders (even small ones) find value in their content, it is also important to disincentivize rewarding content with respect to which no other stakeholders see value.
After discussion with the witnesses, it was decided to apply the “vote dust” shift to all votes equally. Each vote that is cast will be shifted down by about 1.219 SP. This effectively establishes a “baseline” voting strength that applies to everyone, while still maintaining a linear rewards curve for votes above the baseline. This way even large Steem Power holders won’t be able to profit from casting countless inconsequential votes.
工作证明的帐户通过softfork挖掘 / Proof-of-Work account mining via softfork
The changes required to add support for PoW mining for discounted accounts will be included in hardfork 20, but the actual PoW mining will be added later as a softfork on top of HF20.
移除Power Down限制 / Removal of Power Down Restriction
To prevent faucet abuse, accounts could not previously power down unless they had 10 times the account creation fee in Steem Power. Because account creation fees will now be burned with HF20, there will be less of a financial incentive to abuse faucets. After HF20, Steem account holders will have the freedom to power down their SP regardless of their account balance.
为了阻止水龙头滥用，账户以前不能Power down除非他们有十倍于账户创建费的Steem Power。因为HF20中账户创建费将会被燃烧，滥用水龙头的财务诱因将减少。HF20以后，不管他们的账户余额如何，STEEM账户持有者都将可以自由的Power down他们的SP。
见证人喂价格式的更新 / Update to witness price feed format
This change only affects the witnesses. A small change will be made to require the base to be SBD and the quote to be STEEM. Currently, both orders are allowed and can lead to undefined behavior in the price feed. Most witnesses are already supplying their price feeds in this format.
额外细节 / Additional Details
The full list of changes, as well as additional details not listed here, can be found in the GitHub Steem 0.20.0 project. More details can also be found in the original @steemitblog proposal: Proposing Hardfork 0.20.0 “Velocity”.
可以在GitHub Steem 0.20.0 project 获取完整的更改列表，以及此处未列出的其他详细信息。也可以参考 @steemitblog 发表的提案原文: Proposing Hardfork 0.20.0 “Velocity”获得更多细节信息。
结论 / Conclusion
The changes that are coming in the Velocity hardfork are very exciting because they are establishing the foundation that will enable Steemit.com and apps built on top of Steem to onboard millions of new users while remaining economically scalable. With these changes and the additional improvements described above, the Steem platform will be better than ever!