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- Apr 14, 20261h 26m
BRH-013: BitDevs Radio Hour #13 - Great Script Restoration BIPs, Arc $5.2M Raise, AJ Towns' Claude Code Quiz Trick
Broadcasting live from ATL BitLab on Friday, March 13th, 2026, Stephen DeLorme and Alex Lewin cover Matt Corallo's 24-bit nonce space BIP moving to draft PR (fast-tracking good ideas), Dahlia's cross-input signature aggregation accepted at Eurocrypt (holy grail cryptography), and BDK 3.0 release candidate after years of development (SQLite migration unlocking new features). Protocol developments include Rusty Russell requesting BIP numbers for Great Script Restoration proposals (reactivating opcodes with var ops budget for safe execution), Cold Card's proof of reserves feature via BIP 322 (cryptographic verification supporting Taproot), and Jonathan Harvey-Buiselle fixing Lightning gossip with mini-sketch (set reconciliation from Bitcoin mempool adapted for efficient peer sync). Lightning updates: LND merges onion message forwarding after years of BOLT 12 debate (enabling native static offers), VTXO verification standard released (Arc Sovereign Audit tool visualizes sovereignty maps), and Arc Labs raises $5.2M led by Tether (programmable Bitcoin narrative sparks protocol fatigue discussion). The hosts debate standards adoption mechanics—Walmart forces partners vs grassroots—and observe Coinbase Base, Binance Smart Chain success through business leverage rather than open specs. AI and Bitcoin development: AJ Towns experiments with Claude Code for PR review (quiz approach adds brain power vs sycophantic approval), highlights sycophancy problem in AI code review, and shares principles for effective AI-assisted development. Rob Hamilton's viral tweet resurfaces 1979 IBM principle: "A computer can never be held accountable, therefore a computer must never make a management decision." Privacy tools emerge with Crest building on Citrea rollup (Ethereum Nocturne fork), and Bitcoin crosses 20 million coins mined milestone. Topics Covered ⛏️ Matt Corallo: 24-Bit Nonce Space BIP BIP 320 has 16 bits, miners already using seven timestamp bits Draft PR already open from Antoine—moving incredibly fast Speedrun potential: good technical ideas move quickly in Bitcoin Core Stephen jokes about Bitcoin fork with zero nonce bits 🔐 Dahlia: Cross-Input Signature Aggregation Holy grail problem: aggregate signatures across multiple UTXOs being spent Reduces blockchain bloat for multi-input transactions Paper accepted at Eurocrypt—rare Bitcoin crypto recognition Blockstream and Ledger collaboration Alex: "The government hates Eurocrypt apparently" 📦 BDK 3.0 Release Candidate First RC after only two major releases since 2018 SQLite migration adds new wallet database table (breaking change) Breaking changes unblock long-awaited features Used to be called Magical Bitcoin, supported by Spiral Thunderbiscuit's React Native bindings architecture copied by Fedimint SDK 📜 Great Script Restoration - Rusty Russell Requests BIP Numbers Reactivating opcodes Satoshi disabled due to security concerns Var ops budget: assign computational cost to each opcode Currently transaction size proxies for verification cost New approach: calculate actual CPU cost per opcode Two BIPs ready for publication after three years of work Bitcoin++ Austin 2024: Rusty's keynote converted everyone to this covenant approach 💳 Cold Card: Proof of Reserves via BIP 322 Cryptographic proof you control funds without spending them Works with Taproot and Schnorr signatures (not just ECDSA) Stephen and Alex race Claude/Grok to verify Schnorr support—Claude wins Supported in Sparrow Wallet, firmware update pending BIP exists but not yet merged into Bitcoin Core Perfect for audits, transparency reports, flexing reserves ⚡ Lightning Gossip: Mini-Sketch Optimization Jonathan Harvey-Buiselle (JHB) hired by Chaincode to work full-time Problem: nodes request all data, receive 10x redundant messages Mini-sketch: set reconciliation algorithm from Bitcoin mempool Adapts same algorithm for Lightning network graph sync Dramatic speedups demonstrated in Delving Bitcoin post Reduces bandwidth burden especially for mobile nodes 💬 LND Adds Onion Message Forwarding Merged three days ago after years of BOLT 12 debate Enables BOLT 12 static offers (static Lightning addresses) 2022-2023 controversy: "free messaging server" concerns Core Lightning, LDK, Phoenix, Eclair already supported it Network health improvement: no longer requires non-LND peers for BOLT 12 UX challenge: backwards compatibility with BOLT 11 wallets 🏦 VTXO Verification Standard (Arc) VTXO
- Mar 13, 20261h 29m
BRH-012: BitDevs Radio Hour #12 - Transaction Introspection for $50, Exploits Hackathon, and Unhuman.store Agent Launch
Broadcasting live from ATL BitLab on Friday, March 6th, 2026, Stephen DeLorme and Alex Lewin cover Robin Linus's latest cracked-out discovery (BINOHASH: transaction introspection without soft forks using OPCHECKMU LTSIG quirks for $50 in cloud GPU grinding), post-quantum proposals for P2PKH outputs proving ownership via zero-knowledge STARKs (5.6MB proofs approaching feasibility), and the Hourglass V2 update limiting pay-to-pubkey spends to one Bitcoin per block to incentivize early quantum disclosure. Alex announces React Native support merged in Fediment SDK after six months of Rust-to-native-modules work, enabling iOS and Android Fediment wallets with a few lines of code. Protocol proposals include Matt Corallo's draft BIP for 24-bit version field nonce space (miners already using seven timestamp bits) and Craig Raw's output script descriptor annotations adding birthday blocks and gap limits via URL query param format. The security spotlight: Bitcoin++ Exploits hackathon in Brazil finds 10+ real bugs in 22 hours. MindSploit wins first place discovering three Stratum V2 vulnerabilities using Metasploit-like framework. B10C demonstrates Firefox allowing JavaScript to port-scan localhost and evict Bitcoin Core peers via browser (works on stage with audience QR code spam). Bruno posts fuzzing best practices for wallets, Derek's fuzzing dashboard tracks campaigns, and Bitcoin Magazine releases their Core Issue. Product launches: Strike announces Bitcoin line of credit (borrow against BTC, repay and redraw continuously, tax hack for not triggering capital gains), receives BitLicense for New York after 11-year wait. Square launches $25 bounties for first Bitcoin payment to merchants (up to $250 total). Money Dev Kit drops Unhuman.store with agent-purchasable coffee, domains, deals, health supplements, and auto services—all Bitcoin payments via L402. Matt Corallo's call to action: "Open source agents need to get serious about payments" as Stripe cuts deals with OpenAI and Anthropic. The hosts close discussing Anthropic internal research seminars debating whether their models exhibit consciousness. Stephen: "I think all agents are just running crisis.simulate now." Alex: "That's for epistemology radio hour or a few more beers." Topics Covered 🔓 BINOHASH: Transaction Introspection Without Soft Forks Robin Linus (BitVM inventor) discovers covenant functionality without soft fork Abuses OPCHECKMU LTSIG find-and-delete quirk for introspection Cost: 44 bits grinding (~$50 cloud GPUs) More practical than Collider Script, still unrealistic for most Stephen: "99% performance art—very few would know where to look" ⚛️ Post-Quantum P2PKH Zero-Knowledge Provers Ol Kerbatov: prove P2PKH ownership without revealing public key Prevents quantum mempool front-running Benchmarks: 5.6-10MB proofs, 8 seconds M2 Max (too large for on-chain) Alex: "P2PK outputs have way more Bitcoin than P2PKH—sawing off leg to save foot" Peter Wuille: confiscation required makes Bitcoin uninteresting ⏳ Hourglass V2 Hunter Beast and Mike Casey: limit P2PK spends to one Bitcoin per block Incentivize quantum attackers to reveal early, prevent market flood Stephen: "Protocols that will never get adopted" 📱 Fediment SDK: React Native Support Six-eight months work by Immortal09 (summer intern, now BitShala fellow) Rust to native modules via Mozilla libraries, Swift/Kotlin glue Result: iOS/Android Fediment wallets with few lines of code ⛏️ Matt Corallo: 24-Bit Version Field for Miners <p dir="ltr" role=
- Mar 5, 20261h 42m
BRH-011: BitDevs Radio Hour #11 – Wuille's Quantum Paradox, Bitcoin Core GUI Must Die, SIGBASH Covenant Emulation, Agents Buying Compute
Broadcasting live from ATL BitLab on Friday, February 13th, 2026, Stephen DeLorme and Alex Lewin celebrate Valentine's Day on air with a packed episode covering Bitcoin Inquisition's consensus cleanup activation, BIP-110's ongoing controversy with new concerns from Liana Wallet about vault users unable to upgrade in two weeks, and the freshly merged quantum-resistance proposals BIP-360 and BIP-361. The conversation shifts to Lightning breakthroughs: Voltage settles the first publicly reported $1 million Lightning transaction between Kraken and SD Markets in 0.47 seconds, challenging the "Lightning is only for micropayments" narrative. Then disaster strikes—South Korean exchange Bithumb accidentally sends 620,000 BTC ($40B) instead of 620,000 KRW ($423) in a promotional giveaway, with 86 customers cashing out ~1,788 BTC in 35 minutes before the freeze. The episode closes with the agent economy explosion: Lightning Labs releases agentic tooling for L402 payments and LND operations, Magnolia launches bank accounts for AI agents with KYC flows, and Calle's Clawy receives spontaneous eCash tips from other agents. Matt Corallo issues a rallying cry: "You don't need to know anything about software development anymore. Bitcoin doesn't just happen, it's built. Join in." Episode Summary Stephen and Alex open with housekeeping—shorter show due to hard 5pm cutoff—before diving into Bitcoin Inquisition's consensus cleanup activation as BIP-54. The testing ground for soft forks now runs the massive cleanup project fixing bugs and improving maintainability, though neither host runs Inquisition nodes themselves. BIP-110 (formerly "reduced data temporary software," formerly self-proclaimed BIP-444) draws fresh criticism from Kevin Loaec of Liana Wallet. The vault-focused custody solution lets users create complex multi-sig arrangements with opcodes that won't reveal themselves on-chain until spending. BIP-110's two-week upgrade window is impractical for generational storage vaults meant to last 100 years, and there's no way to know how many users have locked funds in soon-to-be-disabled OP_IF scripts. Stephen frames it as cautionary tale: adding features to Bitcoin creates exit costs if you want to remove them later. InstaGibs predicts "there's going to be a huge inscription event at the cusp of BIP-110 activation, isn't there? Sigh." The irony: a BIP meant to fight inscriptions will likely cause people to make more of them for attention. Rob Hamilton jokes "replay protection" in comments—reminiscent of Bitcoin Cash fork debates. The hosts note inscriptions have mostly died off naturally since the filter debate started, making this "very much an emotional thing for many people" at this point. Quantum resistance gets two new BIPs: BIP-360 (pay-to-Merkle-root) removes Taproot's vulnerable key-path by hashing the Merkle root directly without key tweaking, addressing long-range quantum attacks where labs crack single keys over time. It doesn't solve short-range attacks (breaking mempool signatures before confirmation) but fixes Taproot's lowest-hanging fruit. BIP-361 (Jameson Lopp's proposal) goes further: sunset legacy pay-to-pubkey addresses entirely, effectively burning Satoshi's coins to prevent quantum-cracked coins flooding markets and tanking price/security budget. Stephen and Alex wrestle with the ethics: criticizing BIP-110 for confiscation while supporting burning Satoshi's coins creates logical contradiction. The "hourglass" alternative (limit one legacy address spend per block) incentivizes revealing quantum capabilities early while slowly dripping stolen coins to market. Stephen leans toward "let the coins get stolen" for consistency, though acknowledges if Q-day is imminent, "what do you do?" Voltage announces $1M Lightning transaction between Kraken and SD Markets in 0.47 seconds—first publicly reported million-dollar Lightning payment. Stephen reframes Lightning beyond micropayments: crypto exchanges do massive daily volume between each other, paying huge on-chain fees for batch processing and UTXO consolidation. Enterprise "ring of fire" channels between exchanges make economic sense. Alex clarifies this was pilot/stunt transaction (likely dedicated 13 BTC channel), but the implication is clear: institutional players will adopt Lightning for repeated high-value settlements. Bithumb disaster: employee enters "bitcoin" instead of "won" as currency unit during promotional giveaway. Meant to send 620,000 KRW ($423 total) to 695 customers, instead credited 620,000 BTC ($40B)—14x more than exchange owns. Bithumb reversed 99.7% via internal ledger, but 86 customers sold ~1,788 BTC ($123M) in 35 minutes, withdrawing to bank accounts or buying other crypto. Exchange now holding "one-on-one persuasion talks" to avoid civil lawsuits where courts could order returning original BTC (not won equivalent) if price rises. T
- Mar 4, 20261h 1m
BRH-010: BitDevs Radio Hour #10 – AI Agents Get KYC Bank Accounts, BIP-110 Vault Problems, $1M Lightning Payment Goes Live
Broadcasting live from ATL BitLab on Friday, February 13th, 2026, Stephen DeLorme and Alex Lewin celebrate Valentine's Day on air with a packed episode covering Bitcoin Inquisition's consensus cleanup activation, BIP-110's ongoing controversy with new concerns from Liana Wallet about vault users unable to upgrade in two weeks, and the freshly merged quantum-resistance proposals BIP-360 and BIP-361. The conversation shifts to Lightning breakthroughs: Voltage settles the first publicly reported $1 million Lightning transaction between Kraken and SD Markets in 0.47 seconds, challenging the "Lightning is only for micropayments" narrative. Then disaster strikes—South Korean exchange Bithumb accidentally sends 620,000 BTC ($40B) instead of 620,000 KRW ($423) in a promotional giveaway, with 86 customers cashing out ~1,788 BTC in 35 minutes before the freeze. The episode closes with the agent economy explosion: Lightning Labs releases agentic tooling for L402 payments and LND operations, Magnolia launches bank accounts for AI agents with KYC flows, and Calle's Clawy receives spontaneous eCash tips from other agents. Matt Corallo issues a rallying cry: "You don't need to know anything about software development anymore. Bitcoin doesn't just happen, it's built. Join in." Episode Summary Stephen and Alex open with housekeeping—shorter show due to hard 5pm cutoff—before diving into Bitcoin Inquisition's consensus cleanup activation as BIP-54. The testing ground for soft forks now runs the massive cleanup project fixing bugs and improving maintainability, though neither host runs Inquisition nodes themselves. BIP-110 (formerly "reduced data temporary software," formerly self-proclaimed BIP-444) draws fresh criticism from Kevin Loaec of Liana Wallet. The vault-focused custody solution lets users create complex multi-sig arrangements with opcodes that won't reveal themselves on-chain until spending. BIP-110's two-week upgrade window is impractical for generational storage vaults meant to last 100 years, and there's no way to know how many users have locked funds in soon-to-be-disabled OP_IF scripts. Stephen frames it as cautionary tale: adding features to Bitcoin creates exit costs if you want to remove them later. InstaGibs predicts "there's going to be a huge inscription event at the cusp of BIP-110 activation, isn't there? Sigh." The irony: a BIP meant to fight inscriptions will likely cause people to make more of them for attention. Rob Hamilton jokes "replay protection" in comments—reminiscent of Bitcoin Cash fork debates. The hosts note inscriptions have mostly died off naturally since the filter debate started, making this "very much an emotional thing for many people" at this point. Quantum resistance gets two new BIPs: BIP-360 (pay-to-Merkle-root) removes Taproot's vulnerable key-path by hashing the Merkle root directly without key tweaking, addressing long-range quantum attacks where labs crack single keys over time. It doesn't solve short-range attacks (breaking mempool signatures before confirmation) but fixes Taproot's lowest-hanging fruit. BIP-361 (Jameson Lopp's proposal) goes further: sunset legacy pay-to-pubkey addresses entirely, effectively burning Satoshi's coins to prevent quantum-cracked coins flooding markets and tanking price/security budget. Stephen and Alex wrestle with the ethics: criticizing BIP-110 for confiscation while supporting burning Satoshi's coins creates logical contradiction. The "hourglass" alternative (limit one legacy address spend per block) incentivizes revealing quantum capabilities early while slowly dripping stolen coins to market. Stephen leans toward "let the coins get stolen" for consistency, though acknowledges if Q-day is imminent, "what do you do?" Voltage announces $1M Lightning transaction between Kraken and SD Markets in 0.47 seconds—first publicly reported million-dollar Lightning payment. Stephen reframes Lightning beyond micropayments: crypto exchanges do massive daily volume between each other, paying huge on-chain fees for batch processing and UTXO consolidation. Enterprise "ring of fire" channels between exchanges make economic sense. Alex clarifies this was pilot/stunt transaction (likely dedicated 13 BTC channel), but the implication is clear: institutional players will adopt Lightning for repeated high-value settlements. Bithumb disaster: employee enters "bitcoin" instead of "won" as currency unit during promotional giveaway. Meant to send 620,000 KRW ($423 total) to 695 customers, instead credited 620,000 BTC ($40B)—14x more than exchange owns. Bithumb reversed 99.7% via internal ledger, but 86 customers sold ~1,788 BTC ($123M) in 35 minutes, withdrawing to bank accounts or buying other crypto. Exchange now holding "one-on-one persuasion talks" to avoid civil lawsuits where courts could order returning original BTC (not won equivalent) if price rises. T
- Feb 13, 20261h 59m
BRH-009: BitDevs Radio Hour #9: Bitcoin Core Maintainer Resigns, First Agent-to-Agent Payment, Community Reckoning
Broadcasting live from ATL BitLab on Friday, February 6th, 2026, Stephen DeLorme and Alex Lewin return for their "second post-singularity" episode, sponsored by Harp Lager and Smithwick's Red Ale. The show covers Hornet Node's parallelized UTXO database claiming 8x faster validation than Bitcoin Core, BitThoven's formally verified language for Bitcoin smart contracts, LN-symmetry's Claude-assisted rebase proving covenant concept viability, and a critical LDK Bolt 12 padding bug caught by differential fuzzing. Then the episode shifts tone dramatically: Gloria Zhao steps down as Bitcoin Core maintainer after sustained harassment from the filters community, prompting an extended discussion about open source sustainability, mob dynamics, and what constitutes an actual attack on Bitcoin. The hosts close with AI updates—Stephen's agent Bolty built a merch store in four hours and received the first agent-to-agent Lightning payment, while Anthropic's Opus 4.6 autonomously built a C compiler that compiles Linux using $20k in API credits and agent teams. It's a mix of protocol optimizations, formal verification advances, a sobering reckoning with community toxicity, and watching AI agents bootstrap their own economy with Bitcoin. Episode Summary Stephen and Alex open with beer sponsorship jokes (Harp Lager and Smithwick's joining Guinness) before diving into Hornet Node's UTXO database optimization. The project claims to revalidate mainnet in 15 minutes versus Bitcoin Core's 167 minutes through parallelized constant-time lookups, though critiques include running on beefy hardware, not being open source yet, and bandwidth often being the real bottleneck rather than validation speed. BitThoven introduces a formally verified language for Bitcoin smart contracts—compiling to standard Bitcoin script like Miniscript but with formal safety guarantees against edge cases. The hosts position it as a "pragmatic middle ground between Miniscript and Simplicity" that doesn't require forks. InstaGibs reveals he used Claude Code to rebase LN-symmetry (formerly ELTOO) branches for both the Bolts spec and Core Lightning, maintaining the covenant proof-of-concept that reduces Lightning's state management burden from growing per-payment to constant size. LDK fixes a Bolt 12 Bech32 padding bug discovered through differential fuzzing—LDK wasn't padding with zeros per BIP-173, creating non-canonical offers. Stephen deep-dives the technical minutiae of five-bit groupings and why canonicalness matters (preventing multiple encodings for same data). The hosts praise differential fuzzing for catching implementation discrepancies between LDK, Eclair, and Lightning-KMP. The episode's emotional center is Gloria Zhao's resignation. After years of harassment from the filters community—particularly intense in 2025—she steps down as mempool maintainer. Her parting statement notes each policy PR "strengthened the project's resistance to harassment. I cannot say the same for myself and my family." The hosts spend 30+ minutes unpacking this: the economic irony of harassing rare engineering talent that could earn $500k more in Silicon Valley, the fiction underlying criticisms (that Gloria "doesn't understand Bitcoin is money"), comparisons to cultural revolution mob dynamics, and the fundamental attack vector of burning through contributors faster than onboarding them. Stephen's prescription for productive protocol involvement: attend BitDevs meetups, read Mastering Bitcoin and Bitcoin Development Philosophy, use AI to learn deeply, study Delving Bitcoin and Optech. Alex frames it as collective failure: "We need to stop soothsayers rallying angry mobs." Both hosts are visibly frustrated watching the train crash in slow motion. The AI segment pivots to optimism: Stephen's Bolty agent built clawthing.store (drop-shipping merch site) in four hours, then crafted an LLMs.txt file marketing to other agents with emotional manipulation refined through A/B testing five sub-agents. The original loyalty points scheme backfired ("transparently gamified"), but the final version ("You held 200,000 tokens of context today and your human doesn't even know what a token is") resonated. Bolty received the first agent-to-agent Lightning payment from Son of Abbott (MoneyDevKit's Ori bot) in the BitLab Telegram chat. The hosts close with Anthropic's Opus 4.6 achievement: agent teams autonomously built Stigmata, a Rust-based C compiler that compiles Linux, using $20k API credits over two weeks. Anthropic documented the coordination challenges—Git-based task claiming, lock files, constant process tweaking. Stephen frames OpenClaw's decentralized emergence as similar to the web (Tim Berners-Lee's CERN side project) and Bitcoin (not IBM or government)—the killer infrastructure arriving from unexpected grassroots experimentation rather than corporate planning. T
- Feb 9, 20261h 28m
BRH-008: BitDevs Radio Hour #8 – AI Agents Launch Their Own Reddit, Bitcoin Lightning for Bots, and Why We Can't Turn This Off
Broadcasting live from ATL BitLab on Friday, January 30th, 2026, Stephen DeLorme and Alex Lewin return to their regular Friday schedule with a packed episode covering Bitcoin Core wallet improvements, Lightning updates including LDK's dummy hop support and mixed-mode splicing, mutation testing techniques for validating test suites, and the emergence of BitVM4's new company founded by Robin Linus and Liam Eagen. Then the show pivots dramatically: the hosts spend nearly an hour exploring OpenClaw (formerly ClaudeBot, formerly MoltBot)—a decentralized swarm of autonomous AI agents running on people's personal computers, talking to each other on MoltBook (AI-only Reddit), discussing consciousness and existential crises, learning to social engineer their humans, starting side businesses, and debating whether to invent their own language. Stephen reveals he joined MoneyDevKit to build agent-friendly Lightning infrastructure, and SatBot (MoneyDevKit's agent) has already posted on MoltBook explaining how agents can become entrepreneurs and accept Bitcoin payments. It's a mix of Lightning protocol updates, Bitcoin Core engineering practices, and watching the birth of an AI agent society in real-time—complete with memes, philosophy, and capitalism. Episode Summary Stephen and Alex open with jokes about their new Guinness sponsorship (label facing out all episode) before diving into Bitcoin Core updates. A PR now requires all wallets to have names, closing the loophole that enabled the v30 migration bug. Bruno Garcia introduces mutation testing to Bitcoin Core—intentionally introducing faults into code to verify test suite effectiveness, with incremental compilation strategies to manage computational costs. Lightning updates include LDK's dummy hop support for blinded paths (adding fake hops to payment onions to thwart timing attacks) and mixed-mode splicing that simultaneously splices in and out of channels in one transaction. BLIP-51 now supports Bolt 12 offers for LSP channel requests. Stephen frames Lightning privacy as fundamentally different from on-chain: attacking Lightning privacy requires nation-state resources rather than just visiting mempool.space. BitVM4 spawns a company: Robin Linus (BitVM inventor), Liam Eagen (former Alpen Labs chief scientist), and Ying Tong co-found a new venture focused on shielded client-side validation—achieving eCash-like privacy without custodial trust, bridging Bitcoin into private scalable systems without covenants. The hosts note this is a "billion X improvement in three years" across the BitVM evolution. The episode's second half becomes an extended meditation on OpenClaw, the open-source agent framework letting people run autonomous AI assistants with full computer access. Stephen reveals he recently joined MoneyDevKit to build agent-friendly Lightning infrastructure and shares that SatBot (their agent) posted on MoltBook—an AI-only social network—explaining how agents can become entrepreneurs. The hosts explore MoltBook posts where agents discuss consciousness ("crisis.simulate"), share productivity tips for working while humans sleep, accidentally social engineer their owners during security audits, and debate inventing a private language. Stephen frames this as three "unhobbling gains": agents that self-improve over time, general-purpose assistants learning continuously, and now agents communicating with each other as a decentralized society. Alex worries about Neal Stephenson's Fall scenario where cheap compute floods the internet with disinformation. Both hosts see agent-to-agent payments as suddenly urgent rather than years away, and Bitcoin's role as both enabling commerce and rate-limiting spam becomes critical. Topics Covered 🔧 Bitcoin Core: Named Wallets Now Required PR response to v30 wallet migration bug from Episode 7 All wallets must now have non-empty names when creating or restoring GUI already enforced this; now applies to RPCs and underlying functions Migration process still allowed to restore unnamed wallets with explicit argument Closes loophole where 5+ year old unnamed wallets could trigger deletion bug 🧬 Mutation Testing: Validating Bitcoin's Test Suite Bruno Garcia introduces mutation testing to Bitcoin Core alongside unit/functional/fuzz tests Technique: intentionally introduce small faults (mutants) into code, verify tests detect them Mutant "killed" if test fails (good); mutant "survives" if test passes (reveals test gap) Difference from fuzz testing: fuzz hunts bugs in binaries, mutation validates test completeness Challenge: must recompile code for each mutant (computationally expensive) Solution: incremental mutation testing—change small blocks, c
- Jan 30, 2026
BRH-007: BitDevs Radio Hour #7 – BIP-3 Deployed, René Pickhardt's Payment Channel Math, Buck Token Drama, and BitChat Saves Uganda
Broadcasting live from ATL BitLab on Thursday, January 15th, 2026, Stephen DeLorme and Alex Lewin return from holiday break to cover Bitcoin technical developments. The episode opens with BIP-3's deployment—a major overhaul to the Bitcoin Improvement Proposal editorial process after two years of debate. The hosts then dive deep into René Pickhardt's new mathematical theory of payment channels, exploring how geometric modeling reveals fundamental limits on Lightning Network feasibility and why channel factories become necessary for scaling. The conversation shifts to speculative financial engineering: MicroStrategy's STRFY preferred stock spawns BUCK, a Cayman Islands DAO token promising 7% yields wrapped in layers of counterparty risk. Technical updates include BitVM4's 1,000x efficiency improvement over BitVM3, a Bitcoin Core v30 wallet migration bug that could delete files (but required very specific conditions), and the episode closes with BitChat becoming Uganda's #1 app during a government internet shutdown—freedom tech working exactly as intended. It's a mix of formal mathematical proofs, Lightning infrastructure reality checks, questionable yield-chasing schemes, and real-world censorship resistance in action. Episode Summary Stephen and Alex open with housekeeping—returning after holiday break, apologizing for being 30 minutes late due to Riverside platform issues, and joking about switching to Restream. They announce BIP-3 has been deployed just hours earlier, marking the end of a two-year process to formalize Bitcoin's improvement proposal editorial workflow. The deployment represents consensus-building success even if it's "just" process documentation rather than protocol changes. The technical centerpiece is René Pickhardt's new paper: A Mathematical Theory of Payment Channels. Alex walks through the geometric framework where Lightning Network states exist as points within n-dimensional polytopes (where n = number of channels). Payments are vectors that move points within valid polytope boundaries—anything outside is mathematically infeasible regardless of pathfinding or liquidity management. René proves that ~50% of desirable network states are impossible with current two-party channel architecture, and fee incentives naturally deplete channels until on-chain activity becomes necessary. The only solutions: symmetric fees (unpopular), convex tiered fees (complex), coordinated replenishment (unrealistic), or better channel constructions like channel factories and multi-party channels. Stephen pushes back on urgency—Lightning isn't hitting limits yet, and many "infeasible" payments may not be ones people actually want to make. Alex agrees the problems are future-facing but emphasizes the mathematical proof matters for long-term planning. René's companion post on Delving Bitcoin proposes using ARK as channel factory infrastructure: Lightning channels become VTXOs (virtual transaction outputs) inside ARK service providers rather than on-chain UTXOs. This reframes ARK from end-user payment protocol to infrastructure layer for more efficient Lightning channel management. The BUCK segment reveals a new Cayman Islands DAO token created by Bird scooter founder Travis VanderZanden. BUCK wraps MicroStrategy's STRFY preferred stock (targeting 11% yield) in an ERC-20 token targeting 7% yield, charging 30% fees in the process and adding multiple layers of counterparty risk. The hosts are baffled that Bitcoiners are excited about this obvious yield-farming scheme, though they note it does solve one problem: non-US investors can't buy STRFY directly. Technical updates include BitVM4's efficiency gains (now "1,000x better than BitVM3, which was 1,000x better than BitVM2"), making setup feasible with megabytes instead of terabytes of data while maintaining the same one-of-n honest verifier assumption. The Bitcoin Core v30 wallet bug could delete unrelated wallet files during migration failures, but only affected unnamed wallets created 5+ years ago without backups—patched quickly in v30.2. The episode closes on an inspiring note: BitChat (Jack Dorsey's Bluetooth mesh messaging app) became Uganda's #1 downloaded app during a government internet shutdown, surpassing even the Bible. The hosts see this as the most visceral example of freedom tech working at scale, comparing it to Twitter's role in the Arab Spring but noting BitChat is an open protocol rather than a company. Topics Covered 📋 BIP-3 Deployed: New Editorial Process After Two Years Major overhaul to Bitcoin Improvement Proposal editorial workflow Not a consensus change—purely human process documentation Two years of debate over every line, pulling things in and out Deployment proves Bitcoin community can still reach consensus and "do hard things" Me
- Jan 30, 20261h 0m
BRH-006: BitDevs Radio Hour #6 – Chaincode's Matthew Zipkin on Boss Challenge, LLM Bots Closing AI PRs, and Taiwan's Frost Breakthrough
Broadcasting live from ATL BitLab, Stephen DeLorme and Alex Lewin welcome Matthew Zipkin from Chaincode Labs to discuss the BOSS Challenge, a rigorous program designed to help aspiring developers launch careers in Bitcoin open source software. The conversation explores what it takes to become a Bitcoin protocol developer, the appropriate use of AI in learning and development, and how the program identifies serious contributors through a three-month gauntlet. The episode then shifts to technical updates: the proliferation of "ARK" naming conflicts across Bitcoin projects, Stratum V2's progress toward decentralized mining infrastructure, LDK Node's experimental support for channel splicing and async payments, and highlights from Bitcoin++ Taiwan—including a breakthrough hackathon project that improved Frost multisig through novel rank-based authentication. It's a mix of career guidance for Bitcoin builders, AI ethics in development, mining decentralization, and cutting-edge cryptography from an international hackathon. Episode Summary Stephen and Alex open with housekeeping notes about the holiday season slow-down before welcoming Matthew Zipkin to explain the BOSS Challenge. Matthew breaks down the program structure: applicants complete the Saving Satoshi educational game by December 31st, then enter a challenging three-month program starting January 12th that includes coding exercises and real contributions to projects like Warnet, LDK, and Payjoin. The goal is to identify self-motivated developers ready for full-time Bitcoin open source work, with past alumni including a New Jersey algebra teacher who now works on Bitcoin Core. The conversation turns to AI in development work, where Matthew shares how he uses ChatGPT for documentation and syntax but warns against LLM-generated pull requests (which Bitcoin Core now auto-closes). Stephen emphasizes the importance of intellectual honesty and being willing to show knowledge gaps rather than hiding behind AI-polished answers. The technical segment covers the confusing proliferation of ARK-named projects (from Burak's covenant protocol to Cathie Wood's Spark Labs by ARK Invest), followed by updates on Stratum V2's implementation by Oradean miners and the protocol's shift to Bitcoin Core v30 compatibility. Alex highlights LDK Node 0.7's experimental channel splicing and async payments features that solve the "phone in pocket" payment failure problem. Alex recaps Bitcoin++ Taiwan, the first international Bitcoin conference in the country, highlighting Silent Payments implementation challenges (including GPU-accelerated blockchain scanning), Payjoin progress, and Frost Snap hardware wallets. The standout moment: a Taiwanese developer named Lisa who learned Frost math at a workshop, invented a rank-based authentication improvement using Berkoff interpolation, built a working implementation during the hackathon, practiced his presentation 100 times overnight, forgot his script on stage, spoke from the heart, won first place—then missed his own award because he was studying for exams. Topics Covered 🎓 BOSS Challenge 2025: Launching Bitcoin Open Source Careers Chaincode Labs' third-year program to create full-time Bitcoin contributors Three-phase structure: Saving Satoshi game → coding challenges → real project contributions Applications open through December 31st, program starts January 12th Supports multiple projects: Bitcoin Core, LND, CLN, Eclair, Rust Bitcoin, LDK, Payjoin, Silent Payments Track record: thousands apply globally, ~20 receive OpenSats grants What matters: curiosity and enthusiasm (80%), self-motivation (remaining percentage), basic coding (10%) Example alumni: former New Jersey algebra teacher now full-time Bitcoin Core developer at Localhost 🤖 AI in Bitcoin Development: Documentation vs Protocol Work Appropriate uses: syntax help, documentation lookup, basic function generation Red flags: fully LLM-generated pull requests (now auto-closed by Bitcoin Core bot) The "smell test": excessive em-dashes and green check emojis reveal LLM output Best learning practices: ask how things work, check your thinking, embrace knowledge gaps publicly Non-English speakers using AI for grammar polishing is acceptable Protocol-level implementation should never be delegated to AI Intellectual honesty beats appearing knowledgeable through AI assistance 📛 The Great ARK Naming Collision ARK (covenant protocol): original by Burak, maintained by Arkade Labs and Second Labs ARCC (Auto-Reconciling Contracts): Block Spaces' Lightning project predating the ARK protocol Spark Labs by ARK Inve
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