科技和互联网

新数字货币Chia将彻底改变比特币交易难以想象巨大的耗电缺点

你可能不知道,一个比特币交易消耗的电力相当于一个普通美国家庭一周的用电量。比特币用采矿的电力消耗证据来验证区块链,本意是让区块链作假的成本出奇昂贵。这是比特币的两个突出的问题,一者,加重了环境污染,二者,让电力成本低廉的矿池主有了超常的影响力(是说中国内蒙古的矿池吗?),导致比特币系统的不稳定性。比特币发明者之一的科恩成立了新的公司,开发新数字货币Chia将彻底改变比特币交易难以想象巨大的耗电缺点。新货币Chia将用时间证据和存储证据来验证区块链的真伪,存储证据相对于电力消耗的采矿证据消耗能源要低许多许多,这也将解决第二个问题。

科恩的Chia极有可能成为原来比特币的最大的对手。作为比特币的发明者,也许他才有能力发现比特币的不足,并在技术上改进它们。

原文链接:https://techcrunch.com/

抄录:

BitTorrent inventor announces eco-friendly bitcoin competitor Chia

By Josh Constine

Chia Network co-founder Bram Cohen
A bitcoin transaction wastes as much electricity as it takes to power an American home for a week, and legendary coder Bram Cohen wants to fix that. And considering he invented the ubiquitous peer-to-peer file transfer protocol BitTorrent, you should take him seriously.

Cohen has just started a new company called Chia Network that will launch a cryptocurrency based on proofs of time and storage rather than bitcoin’s electricity-burning proofs of work. Essentially, Chia will harness cheap and abundant unused storage space on hard drives to verify its blockchain.

“The idea is to make a better bitcoin, to fix the centralization problems” Cohen tells me. The two main issues he sees in bitcoin are in environmental impact and the instability that arises from the few bitcoin miners with the cheapest access to electricity exerting outsized influence.

Chia aims to solve both.

 

Bitcoin uses proofs of work to verify the blockchain. That’s because it’s prohibitively expensive to make a fake blockchain as it wouldn’t have as much work demonstrated as the real one. But over time that’s given a massive advantage in collecting the incentives for mining bitcoin to those who operate close to low-cost electricity and naturally chill air to cool the mining rigs.

Chia instead relies on proofs of space in file storage, which people often already have and can use for no additional cost. It combines this with proofs of time that disarm a wide array of attacks to which proofs of space are susceptible.
“I’m not the first person to come up with this idea,” says Cohen, but actually implementing requires the kind of advanced computer science he specializes in.

After inventing torrenting in the early 2000s and briefly working on Steam for Valve, Cohen had been at BitTorrent building a new protocol for peer-to-peer live video transfer. But mismanagement on the business side caused the company to implode. Now it’s limping along, and Cohen says “it doesn’t need me day-to-day.” So while he’s still on the board, he left in early August to start Chia Network.

 

Chia Network co-founder Bram Cohen
Cohen has teamed up with early bitcoin exchange Tradehill’s COO Ryan Singer and they’ve raised a seed round for Chia to ramp up hiring. Cohen wouldn’t say how much it had raised, laughing that, “I’m not sure how much we want to announce right now, but it was a very hot round.” The goal is do some early sales of Chia in Q2 2018, with a full launch of its cryptocurrency by the end of 2018, though Cohen says that’s a stretch goal.

Cohen is a brilliant technologist, but it will take more than that to convince people to switch over from bitcoin to Chia. He tells me the plan for Chia is “do some smarter things about its legal status and do a bunch of technical fixes that you can do when starting from scratch.”

It’s too early to guess how this will all play out, but at least someone is trying to address the ecological impact of cryptocurrency instead of just complaining about it. Cohen seems excited though. “It’s technically ambitious and there’s a big meaty chunk of work to do. I’ve done enough raising money and recruiting. Now for the real work.”

[Featured Image Credit: Michael O’Donnell]

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