【Weekly Ethereum 2018 Vol.12】PoS批判, Parity, Truebit, All-Star Talk, Decentraland

本記事の主要対象期間
18年3月17日~18年3月23日

Ethereumインフラ
Ethereum All-Star Tech Talk
Ethereum関連プロジェクト

Ethereumインフラ

Ethereum Core Devs Meeting 35

Testing
EIP 712 Discussion
EIP process updates.
Metropolis.
Client/research updates.

Ethereum Core Devs Meeting #35 [03/23/18]

PoS批判再び

今回はビットコイン開発者、教育者（？）としても有名なJimmy Songからです。

Why POS doesn't make sense in a nutshell:
1/
Blocks produce X coins for some random staker.
Economically, someone will pay up to X to become that staker.
— Jimmy Song (송재준) (@jimmysong) March 17, 2018

いくつかの反応

Why not focus on the most obvious path to "becoming that staker", namely buying coins and depositing them?
— Vitalik Non-giver of Ether (@VitalikButerin) March 17, 2018

These aren't great criticisms of PoS. Better ones:
1. Not machine validateable from genesis
2. Tolerance to long restarts/offline periods inferior to PoW
3. Bootstrapping ~impossible w/out PoW (no easy coinholders distribution bootstrap, CPU distribution already bootstrapped) https://t.co/jVZLlqZt8X
— Philip Daian (@phildaian) March 17, 2018

Still a misconception of POS basics.
While in POW a malicious actor risks only X in POS the costs of being malicious can be orders of magnitude bigger than X. Hence X can be much smaller for similar security guarantees https://t.co/gvFAlUFIwY
— Martin Köppelmann (@koeppelmann) March 18, 2018

Parity Bridge

9日の記事ですが、見逃していたので、ここに載せます。PoAの短期的なスケーリングについてのアイディアです。

First, a user deposits Ether from the mainnet to the Home bridge contract, then the ÐApp runs on Kovan for as long as required, then finally, the user withdraws their Ether back on the mainnet.

Bridging the ÐApp – Scaling now with Parity Bridge

Truebit講演

TruebitはEthereumのスケーリングソリューションの一つです。テーマは以下の通り。

Discussion around Truebit, Game Theory, Incentives, Cryptography and the Doge-Ethereum Bridge.

Doge-Ethereum Bridgeはいつかブログでも取り上げようと思っています。

Stanford Fireside Chat with Dan Boneh and Jason Teutsch

Ethereum All-Star Tech Talk

参加者が豪華過ぎますね。

Piper Merriam (Ethereum Foundation, Trinity, Py-EVM)
Fredrik Harrysson (ParityTech, Parity)
Raul Jordan (Prysmatic Labs, geth-sharding)
Jacek Sieka (Status, Nimbus)
Ben Edgington (ConsenSys, PegaSys)
Vitalik Buterin (Ethereum Foundation, co-founder)
Vlad Zamfir (Ethereum Foundation, Casper CBC Lead)
Justin Drake (Ethereum Foundation, Sharding Researcher)
Philip Daian (IC3, Hydra Project & hackthiscontract.io Lead)
Robert Habermeier (ParityTech, Parity Lead Developer)
Jon Choi (Ethereum Foundation)
Karl Floersch

開催は台北ですが、東京もこれくらいホットなクリプト都市になれると思っています。

[LIVE] Ethereum All-Star Tech Talk 以太坊全明星技術座談 | Taipei Ethereum Meetup

Ethereum関連プロジェクト

Aragon 0.5リリース延期

この界隈ではよくあることですが、Aragon OSの最新版リリースが延期されました。Aragonは分散型プロジェクトのためのガバナンスツールを提供するプロジェクトです。

Unfortunately the production build is preventing us from launching 0.5 today as expected. We have been working on it for the last days and hours and right now we're not ready to release. Everything is working locally but we don't feel good about releasing this without testing.
— Aragon (@AragonProject) March 18, 2018