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S16 E30 · 5:23:41 · 14 Jun 2025

S16 E30: Peter Rizun on Scaling Bitcoin with Hardware

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Peter Rizun is the chief scientist at Bitcoin Unlimited: a software client that aims to scale Bitcoin with big blocks, while also empowering regular users to run nodes. In this episode, we talk about what went wrong during the block size wars & his research in scaling hardware.

Time stamps:

00:01:15 — Introducing Peter Rizun
00:03:32 — Early Block Size Debates and Satoshi’s Vision
00:07:45 — Block Size Limit History and Miner Soft Limits
00:10:10 — Dan Kaminsky’s 2011 Scaling Predictions
00:12:01 — Scaling Philosophy: Zero, One, Infinity and Earth-Scale
00:15:09 — Block Size Wars, Chain Splits, and Altcoin Proliferation
00:16:43 — Stablecoins, Lightning, and Bitcoin’s Use Case
00:19:03 — Zcash, Ethereum, and Bitcoin’s Missed Opportunities
00:22:11 — Bitcoin’s Script Limitations and Smart Contract Innovation
00:25:10 — Scaling Limits: Hardware, Storage, and Bandwidth
00:35:31 — Node Software, Formal Specs, and Core’s Dominance
00:44:00 — Censorship, Reddit, and the Block Size Debate
00:48:04 — SPV Nodes, Custodial Wallets, and Decentralization
00:51:30 — Block Size, Internet Speed, and Global Node Access
00:57:26 — UTXO Model, Dust, and State Management
01:01:37 — Ethereum, Zcash, and Node Benchmarking
01:03:26 — Hardware Acceleration and Specialized Chips
01:07:00 — Sponsorship Break and Bitcoin Adoption via Debit Cards
01:14:59 — History of Block Size Proposals and Client Forks
01:21:07 — Consensus, Forks, and the Role of Exchanges
01:25:40 — SegWit, SegWit2x, and Political Compromises
01:33:04 — Bitcoin Cash, Market Dynamics, and Altcoin Competition
01:39:34 — Stablecoin Fees, Global Demand, and El Salvador
01:46:52 — Decline of Bitcoin Payments and Missed Opportunities
02:10:56 — Lightning Network: Promise vs. Reality
02:22:12 — Shitcoin vs. Bitcoin Maximalism and Open Source Innovation
03:05:52 — Spam, Miner Policy, and Transaction Filtering
03:17:05 — Hardware Scaling: M.2 Accelerator and Node Commoditization
03:29:11 — Nexa: Experimenting with Proof-of-Work and Node Bottlenecks
03:37:44 — Craig Wright, Satoshi Identity, and Big Block Movement Damage
04:02:03 — Fork Proliferation, Community Division, and Stablecoins
04:04:31 — Bitcoin’s Future, Experimentation, and Open Research

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Keywords from the feed: Peter Rizun, Bitcoin Unlimited, Bitcoin, Bitcoin Cash, Scaling Bitcoin, Bitcoin Scaling Debate, Scaling Wars, Nexa, Hardware Scaling, Big Block Bitcoin

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