Oct 22, 2018 · 45m · 20vc
20VC: Scalar Capital's Linda Xjie on Who Will Win The Smart Contract War, The Future of Exchanges: Centralised or Decentralised & The Pros and Cons of Differing Privacy Coins
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In this episode of The 20 Minute VC, host Harry Stebbings interviews Scalar Capital co-founder Linda Xie to explore the evolution of cryptocurrency, comparing privacy coin technologies, decentralized exchanges, and smart contract platforms. Xie shares key operational lessons from her time at Coinbase, offering frameworks for token valuation, sustainable fundraising, and protocol scaling.
How this conversation actually went
Every chapter scored 0–10 on four independent dynamics. Hover any point for the reasoning behind the score. Harry holds 24.2% of the talking time here. How this is scored →
Harry as informed peer 2.2 Guest teaching 5.2 Guest disagreement 0.8 Harry pushing back 0.6
speaking balance: gold is Harry, purple is the guest (3 minute bins)
Sharpest disagreement ▶ 33:29 Rejecting mega-fundraises as defensibility
Linda directly dismisses the premise that raising huge cash rounds provides startup defensibility, stating she explicitly avoids investing in founders with that mindset.
Hardest push from Harry ▶ 18:46 Centralized exchanges vs crypto ethosHarry directly challenges the guest on whether centralized exchanges holding supply and demand power contradict the core ideological ethos of cryptocurrency.
Biggest teaching moment ▶ 11:02 Masterclass on privacy coin trade-offsLinda delivers an extraordinarily detailed breakdown of cryptographic approaches across Monero, Zcash, and Dash, explaining technical bottlenecks so clearly that Harry jokes she deserves an award for it.
Harry holds his own ▶ 30:30 Articulating token valuation frameworksHarry demonstrates strong technical knowledge of crypto fund economics by introducing specific token valuation methodologies like the MV=PQ velocity model.
the scores for every segment, with the reasoning behind each
| Chapter | Topic | Harry as informed peer | Guest teaching | Guest disagreement | Harry pushing back | Why |
|---|---|---|---|---|---|---|
| Linda Xie's Journey to Bitcoin and Founding Scalar Capital | 1 | 3 | 0 | 0 | Harry asks a standard introductory question about Linda's background and path to founding Scalar Capital. Linda provides a thorough monologue covering her family background in China, her early exposure to Bitcoin, and her experience building compliance and internal tools at Coinbase. | |
| Key Operating Lessons from Coinbase's Hyperscaling Period | 1 | 4 | 0 | 0 | Harry prompts Linda on key operational lessons from Coinbase's early hyper-growth phase. Linda outlines internal management strategies, including Brian Armstrong's disciplined focus during altcoin hype cycles and preparing infrastructure prior to sudden user adoption. | |
| Defining Privacy Coins and Their Role in Financial Privacy | 1 | 6 | 0 | 0 | Harry introduces privacy coins as a main topic. Linda educates the host on the fundamental distinction between pseudonymity and anonymity in Bitcoin, explaining why transaction history leakage damages currency fungibility. | |
| Technical Approaches and Trade-offs of Monero, Zcash, and Dash | 2 | 8 | 0 | 0 | Harry highlights the competitive ecosystem between Monero, Zcash, and Dash. Linda delivers an extensive technical breakdown of ring signatures, key images, ZK-SNARK computation delays, and master node centralization risks, prompting Harry to compliment her detailed breakdown. | |
| Transitioning Crypto from Speculative Trading to Real Utility | 4 | 5 | 2 | 2 | Harry brings up data from a Zcash podcast regarding speculative versus transactional use and challenges whether centralized exchanges violate crypto ethos. Linda gently reframes the dynamic, arguing that centralized platforms provide essential optionality and user choice. | |
| Advising 0x: Token Sale Structure and Building Community | 1 | 5 | 0 | 0 | Harry asks about Linda's experience advising 0x. Linda explains token sale design, detailing how capping individual allocations prevented whale sweeps and helped bootstrap a developer-focused grassroots community. | |
| Current State of Smart Contracts and Ethereum Bottlenecks | 2 | 6 | 0 | 0 | Harry asks about the state of smart contracts and Ethereum. Linda details Ethereum's developer adoption leadership while explaining network bottlenecks caused by dApps like CryptoKitties and the layer-2 scaling concepts like state channels and plasma. | |
| Developer Loyalty and the Competitive Landscape for Smart Contracts | 3 | 5 | 1 | 1 | Harry cites a question from VC Avichal Garg regarding winner-take-all dynamics versus regional fragmentation. Linda explains developer ecosystem lock-in while predicting a top 2-3 platform oligopoly alongside regional variations in markets like Korea. | |
| Token Valuation Frameworks and Sustainable Crypto Fundraising | 4 | 5 | 2 | 2 | Harry asks about token valuation frameworks like the MV=PQ velocity model and questions mega-fundraising rounds. Linda explains token economics dynamics and directly rejects the notion that massive fundraises create defensibility. | |
| Quick Fire Round: Crypto Insights and Sector Predictions | 3 | 5 | 3 | 1 | Harry conducts a quick-fire round covering books, industry misconceptions, institutional custody, and tech VC entry. Linda counters popular industry dogmas by stating not everyone needs to be their own bank and warns against traditional VCs tacking unnecessary tokens onto startups. |
Statements from this episode (22)
Xie: Crypto platforms must resist listing distracting hype assets during market cycles
“These cycles really come and go, and ultimately you want to build something that lasts throughout this entire period. So by not getting super distracted by things that, you know, if you review and doesn't seem like something that's going to actually stay aroun…”
Xie: Bitcoin lacks full fungibility due to transaction history tracking
“When you have some coins, like let's say in Bitcoin, where it has a history of tainted transactions, meaning that it was used for maybe some illicit purposes, it might not get accepted on some exchanges, or certain merchants or people might not accept it, beca…”
Xie: Privacy coins matter more under corrupt governments than in the US
“There are a lot of legitimate cases where, let's say that someone lives in a society where their governments are very corrupt, and they want to protect themselves from their own governments. I think that a privacy coin is extremely important. It's To me, less …”
Xie: Monero cannot support mainstream use without better scaling solutions
“Monero itself isn't as scalable because it's storing all this additional data, and so Monero might not be something in the current state that can actually be used mainstream quite yet, so they still have to work on some scaling solutions”
Xie: Only 13% of Zcash network transactions are actually private
“Only like 13% of the network right now is actually private because they have to opt into using this.”
Xie: Zcash private transactions will increase as zk-SNARK efficiency improves
“Over time, I think it's going to start, these privacy transactions are going to start increasing, and it's going to be more of a fully private coin.”
Xie: Slow zk-SNARK generation limits Zcash usability for retail merchants
“These DK snarks take a long time to generate. You're not going to have your average user just try to be generating these snarks and then pay the merchants.”
Xie: Crypto's core value is financial optionality, not mandatory self-custody
“The way I view it is that crypto and decentralized exchanges give people the option to use them, so not everyone has to be their own bank.”
Xie: 0x built a strong community by avoiding price speculators
“Xerox has one of the strongest communities out there, and I think it really all started with the way they did their token sale, and when you really show that you care about the tech and not about Prides and speculation. I think you're able to create a stronger…”
Xie: Token sales make projects public instantly, risking early community ruin
“So when I work with projects, I really emphasize the need for making sure you create a strong community early on, because if you do a token sale, you're essentially public from day one, and you're going to have to deal with your investors. You could totally ru…”
Xie: Ethereum currently has the strongest developer community globally
“Yeah, Ethereum has the strongest developer community right now.”
Xie: CryptoKitties consumed 13% of Ethereum transaction fees at 2017 peak
“At the end of last year, to the point where it was accounting for 13% of the transaction fees on Ethereum, and it actually ended up slowing down Ethereum because it was so popular.”
Xie: Developers will abandon Ethereum for alternatives if scaling fails
“And so there's all kinds of different solutions here that people are working on, but I really think that if Ethereum can't get some strong progress in these scaling solutions, that people are going to start moving to different smart contracts platforms”
Xie: The smart contract market will consolidate to two or three platforms
“I think that there's going to be kind of this, like, Two to three winner take all. I really think that sorry, I guess maybe take most.”
Xie: EOS's 21 block producer model defeats the core purpose of crypto
“I'm not personally as excited about those because that, to me, often defeats the whole purpose Of this entire space, if you just have, like, this, like, concentrated group of people that are validating all the transactions, you're seeing that with platforms li…”
Xie: Utility token value does not scale with platform popularity
“When you have things like decentralized exchange that can kind of like quickly exchange these tokens from a liquid coin like Ethereum to this utility token that people are not going to want to hold on to these tokens at all. It's kind of, you just only need to…”
Xie: Raising too much capital makes crypto startup teams idle
“I would likely not invest in teams that kind of have this thinking, to be honest. I really like that the teams that are raising money, the amount that they actually need to build this product, because I think that in the end, if you raise Too much money that y…”
Xie: Massive token raises deter value-add investors from participating
“If you're raising massive amounts of money, the value add investors are not going to want in on it. Generally, you're going to have the people that are newer to the industry and people that don't know what they're doing.”
Xie: Crypto funds collaborate and share deal flow via weekly syncs
“These crypto funds and investors often share deal flow with each other. It's really interesting because these crypto funds are very collaborative. I have weekly syncs with a number of crypto funds out there where we say, okay, these are the deals I saw, this i…”
Xie: The crypto store-of-value market will be winner-takes-most
“There would generally be, like, a winner takes most, I think, for store of value, because people just want to park their money in one thing, and just kind of not have to worry about it.”
Xie: China will eventually create its own national cryptocurrency
“China in terms of crypto, I actually think that they're going to be a big player in this industry. I think they will really start using this blockchain tech And be building out different tech themselves. I actually think they might even create their own crypto…”
Xie: Institutional capital will meaningfully enter crypto by early 2019
“So I do think that the institutional capital is already coming in. I've heard of a number of funds that we're raising, and some of the names that they've raised from is definitely the institutional capital that I was hoping would come in. But in terms of a mea…”