What happens if a soft fork (such as CTV) were activated by 50% of the hash rate, but rejected by the rest?
@Rob Hamilton explains how this would play out, ultimately resulting in a chain split. [BR096]
Bitcoin.Review
_@bitcoin.review
npub1qdca...zclt
A Podcast and Newsletter review of Bitcoin Software updates and related topics with NVK and guests.
The OP_RETURN debate raises both protocol and governance questions.
While @Rob Hamilton sees merit in having multiple implementations, he flags potential gaps in developer hygiene between alternative implementations vs #Core release practices.
Full conversation in BR096.
The OP_RETURN debate may be distracting from a far more existential threat to #Bitcoin.
The Samourai Wallet case could set precedent on whether node operation is legal in the US. βοΈ
@craigraw urges us to focus on the real fight in BR095.
π BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob , Odell, Craig & NVK
Links:
β‘οΈ Fountain:
β‘οΈ Spotify:
β‘οΈ Amazon:
β‘οΈ Apple:
β‘οΈ YouTube:
Shownotes:
β‘οΈ Website:
β‘οΈ Substack:
Odell weighs in on the OP_RETURN debate, explaining why he believes node runners should be given more configurability, not less. π

Fountain
Bitcoin.Review Podcast with NVK & Guests β’ BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell & Craig β’ Listen on Fountain
I'm joined by guests Rob Hamilton, Craig Raw & Matt Odell to go through the list.OP_RETURN Drama (00:00:52) Odell's thoughts (00:04:29) Craig's tho...
Spotify
BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell & Craig
Bitcoin.Review Podcast with NVK & Guests Β· Episode
BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell & Craig | Bitcoin.Review Podcast with NVK & Guests Episode on Amazon Music
I'm joined by guests Rob Hamilton, Craig Raw & Matt Odell to go through the list.OP_RETURN Drama (00:00:52) Odell's thoughts (00:04:29) Craig's tho...
Apple Podcasts
BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell & Craig
Podcast Episode Β· Bitcoin.Review Podcast with NVK & Guests Β· 15/05/2025 Β· 1h 6m

πBitcoin.Review Podcast
Bitcoin Review Podcast BR096 - OP_RETURN Debate, Bitcoin Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell & Craig
Iβm joined by guests Rob Hamilton, Craig Raw & Matt Odell to go through the list.

BR096 - OP_RETURN Debate, Core Governance, Alternative Implementations, Future Soft Forks, CTV Prospects, Core Vulnerabilities, COLDCARD Hardware Design, Testnet vs Signet + MORE ft. Rob, Odell, Craig
Iβm joined by guests Rob Hamilton, Craig Raw & Matt Odell to go through the list.
Prototyping future #Bitcoin upgrades on mainnet using policy signers? β
Taplocks offer a way to emulate CTV/CAT today (and transition seamlessly if/when the soft fork activates)
@Rijndael gives a deep dive with @DETERMINISTIC OPTIMISM π and @Rob Hamilton in BR095.
Ephemeral anchors recently dropped in Bitcoin Core v29! π
No more fee baking in pre-signed txs.
You can now "delegate" fee payment post-signature.
Better for Lightning, covenants and more.
@DETERMINISTIC OPTIMISM π , @Rijndael & @Rob Hamilton unpack it in BR095.
πΈ Treasury privacy isn't (just) about hiding from the state - it's about protecting internal ops.
@DETERMINISTIC OPTIMISM π outlines @Coinkite's shift to CoinJoin - balancing UTXO management, tax friction, and internal visibility risks - with @Rijndael and @Rob Hamilton in BR095.
Is Cashu an L2 or an L3?
While this may be debated (and @calle might disagree!), @DETERMINISTIC OPTIMISM π and @Rijndael argue that #Cashu is the "perfect L3" - generally using lightning for settlement, whilst offering a different trust model and features. [BR095]
Agentic coding tools are entering YOLO mode π΅βπ»
βI don't want to install this NPM packageβjust take my machine.β
@DETERMINISTIC OPTIMISM π & @Rijndael joke (but not really) about how fast YOLO coding is becoming the norm in BR095.
Are ETFs and MSTR another form of custodial "second layer"? π€
@DETERMINISTIC OPTIMISM π , @Rijndael and @Rob Hamilton give their take on this question in BR095.
Is the JoinMarket Jam GUI dependency on Node.js a security risk for #Bitcoin users?
@DETERMINISTIC OPTIMISM π thinks so. He's requesting a new GUI with "sane dependencies" and is willing to participate in funding its development. Calling all developers! π οΈ [BR095]
DIY automation? β
ESP32.
Securing your #bitcoin? π« ESP32
@DETERMINISTIC OPTIMISM π highlights the fundamental difference in design and purpose, and warns against trusting your keys to a chip not built for secrecy.
NVK, @Rob Hamilton & @Rijndael discuss ESP32 and its appropriate use cases in BR095.
Bitcoin's greatest strength? It just works.
Despite the initial poor reception by cryptographers, #Bitcoin managed to thrive, grow and develop to this day.
@DETERMINISTIC OPTIMISM π , @Rob Hamilton and @Rijndael discuss their thoughts on why this is in BR095.
Q: What are opcodes in #Bitcoin?
A: Theyβre the functions that tell the network how coins can move.
(And youβre using them whether you know it or not.)
From multisig to CTV, @DETERMINISTIC OPTIMISM π , @Rob Hamilton & @Rijndael give the ELI5 on opcodes in BR095.
π COLDCARD just got a HUGE upgrade!
COLDCARD Co-sign lets you do 2-of-3 multisig with yourself - while enforcing spending limits, whitelisted outputs, and time-based constraints, all locked behind a policy key.
@DETERMINISTIC OPTIMISM π , @Rijndael , and @Rob Hamilton break it down in BR095.
SHOWJI phones ship with trojan apps designed to steal crypto. π¨
@DETERMINISTIC OPTIMISM π highlights the risk of Chinese platforms, and the false sense of safety around ESP32 and MediaTek.
Design priorities are different - and that matters.
[BR095]
Cove 0.3.0 just dropped! π
π BIP329 upgrade (now with accounting fields)
π TAPSIGNER support
π Watch unconfirmed txns
π± Simple UX
πͺ Future coin control
Could Cove be the starter wallet to rule them all?
@DETERMINISTIC OPTIMISM π , @Rob Hamilton and @Rijndael discuss the project in BR095.
Are you a C# dev looking to sink your teeth into a cool #bitcoin project?
Thereβs a bounty out for building a Cashu plugin for @BTCPay Server , backed by Open Cash Foundation and @Rijndael .
β‘οΈ Cashu + BTCPay = private ecash payments for merchants. Time to build! [BR095]
Milestone achieved for the Krux team, who just pulled off the first air-gapped PGP signature using the NIST P-256 curve (secp256r1). ππ
@DETERMINISTIC OPTIMISM π backs it as a rare ESP32 project worth supporting.
Hear why in BR095.
Why isn't the #Bitcoin mailing list on #nostr yet?! π¨
Itβs the perfect public, decentralized solution - and could be a catalyst for new development.
@DETERMINISTIC OPTIMISM π and @Rijndael lay out the opportunity in BR095.