Why Proof of Stake is Flawed with Lane Rettig

“When you make this change that we just talked about going from Proof of Work to Proof of Stake you break a lot of the really cool stuff…I don’t think any of us appreciated the complexity and how much fixing we’d have to do after breaking Nakamoto consensus.”— Lane RettigLocation: New YorkDate: Sunday 5th DecemberProject: EthereumRole: Core DeveloperThe Proof of Work (PoW) consensus protocol is under relentless attack. Earlier this month The House of Representatives held a hearing on digital assets. Rashida Tlaib dismissively questioned PoW, quoting erroneous Bitcoin transaction energy cost data. In response Stellar’s CEO Denelle Dixon implicitly agreed PoW was energy intensive, and that “we all need to focus on minimizing the energy consumption as much as possible”.The next day Ripple’s co-founder Chairman Chris Larsen published a medium article that stated “Bitcoin’s code needs to be changed to a low energy consensus algorithm like those used by nearly all other major crypto protocols.” Last week CNBC interviewed the CEOs of 2 wealth management firms. One stated the following:“Bitcoin operates on PoW: that’s the older technology, it’s slower, it’s really a drain on energy. Proof of Stake (PoS) is the newer system, it’s where I’d want my money going. It’s less energy intensive. It’s faster. It’s more secure."In potentially the biggest change to any blockchain ever implemented, Ethereum is planning to move from PoW to PoS. PoS has been argued by its proponents (most notably Vitalik Buterin) to not only be less energy intensive than PoW, but to also provide significantly much cheaper security, and greater decentralization.But, the arguments dismissing PoW and recommending PoS are fundamentally flawed.In this interview, I talk to the former Ethereum Core Developer Lane Rettig, who now works as a core developer for Spacemesh. We discuss the history and logic behind PoW, the drivers for developing new consensus protocols, how PoS is set to work within Ethereum, and the significant flaws and risks this proposed change entails.  This episode’s sponsors:Gemini - Buy Bitcoin instantlyBlockFi - The future of Bitcoin financial servicesSportsbet.io - Online sportsbook & casino that accepts BitcoinCasa - The leading provider of Bitcoin multisig key security.Exodus - The world's leading Desktop, Mobile and Hardware crypto wallets.Ledger - State of the art Bitcoin hardware walletCompass Mining - Bitcoin mining & hosting-----WBD440 - Show Notes-----If you enjoy The What Bitcoin Did Podcast you can help support the show by doing the following:Become a Patron and get access to shows early or help contributeMake a tip:Bitcoin: 3FiC6w7eb3dkcaNHMAnj39ANTAkv8Ufi2SQR Codes: BitcoinIf you do send a tip then please email me so that I can say thank youSubscribe on iTunes | Spotify | Stitcher | SoundCloud | YouTube | Deezer | TuneIn | RSS FeedLeave a review on iTunesShare the show and episodes with your friends and familySubscribe to the newsletter on my websiteFollow me on Twitter Personal | Twitter Podcast | Instagram | Medium | YouTubeIf you are interested in sponsoring the show, you can read more about that here or please feel free to drop me an email to discuss options.