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Bitcoin TLDR

#73

Mar 24 - Mar 29, 2025

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The discussions across various platforms delve into the complexities and potential advancements within the Bitcoin ecosystem, focusing on privacy concerns, quantum computing threats, and significant software updates. /dev /fd0 highlights the privacy implications of the Payjoin protocol and the UTXO probing attack, stressing the importance of cautious engagement in Payjoin transactions due to potential privacy trade-offs (source). Meanwhile, Matt Corallo and Josh address the looming challenge of quantum computing to Bitcoin's security, proposing different approaches to safeguard the cryptocurrency, including a freeze fork and a quantum-resistant fork, alongside emphasizing Bitcoin's inherent protections and the role of community engagement in preemptive measures (source, source).

The release of Bitcoin Core version v29.0rc2 represents a pivotal moment for the platform, aiming to bolster the network's stability and reliability through community-driven testing and feedback. This update was made available by Gloria Zhao and glozow, who encourage the community's involvement in refining the software before its final release, underscoring the collaborative effort required to advance the Bitcoin Core software (source, source).

Josh further explores Bitcoin's potential as the optimal unit of account to passively stabilize the macroeconomy, advocating for its adoption based on its unique attributes and the game-theoretic argument for its eventual dominance. This discussion underlines the transformative power of Bitcoin in reshaping economic stability and efficiency through a universally accepted unit of account that aligns with total wealth (source).

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Latest Bitcoin TLDR Newsletters

Bitcoin TLDR

#73

newsletter icon

Mar 24 - Mar 29, 2025

The discussions across various platforms delve into the complexities and potential advancements within the Bitcoin ecosystem, focusing on privacy concerns, quantum computing threats, and significant software updates. /dev /fd0 highlights the privacy implications of the Payjoin protocol and the UTXO probing attack, stressing the importance of cautious engagement in Payjoin transactions due to potential privacy trade-offs ([source](https://gnusha.org/pi/bitcoindev/450755f1-84c5-4f32-abe0-67087ae884d6n@googlegroups.com/T/#u#m926660a18f3716490069656525614926386b01fd)). Meanwhile, Matt Corallo and Josh address the looming challenge of quantum computing to Bitcoin's security, proposing different approaches to safeguard the cryptocurrency, including a freeze fork and a quantum-resistant fork, alongside emphasizing Bitcoin's inherent protections and the role of community engagement in preemptive measures ([source](https://gnusha.org/pi/bitcoindev/CAJDmzYxw+mXQKjS+h+r6mCoe1rwWUpa_yZDwmwx6U_eO5JhZLg@mail.gmail.com/T/#m4b6171f7714a7942674e46bc6487a6f9aae36410), [source](https://delvingbitcoin.org/t/is-there-a-social-approach-to-the-quantum-problem/1537)). The release of Bitcoin Core version v29.0rc2 represents a pivotal moment for the platform, aiming to bolster the network's stability and reliability through community-driven testing and feedback. This update was made available by Gloria Zhao and glozow, who encourage the community's involvement in refining the software before its final release, underscoring the collaborative effort required to advance the Bitcoin Core software ([source](https://gnusha.org/pi/bitcoindev/566a1d2f-c3e7-495e-a85b-1e21f92df2d3n@googlegroups.com/T/#u#m9489b490c59f48abcd1004164685f2dcfd1b0062), [source](https://delvingbitcoin.org/t/bitcoin-core-29-0-release-candidate-is-available/1536)). Josh further explores Bitcoin's potential as the optimal unit of account to passively stabilize the macroeconomy, advocating for its adoption based on its unique attributes and the game-theoretic argument for its eventual dominance. This discussion underlines the transformative power of Bitcoin in reshaping economic stability and efficiency through a universally accepted unit of account that aligns with total wealth ([source](https://delvingbitcoin.org/t/a-game-theoretic-approach-to-bitcoin-s-valuation-in-equilibrium/1547)).

Bitcoin TLDR

#72

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Mar 17 - Mar 20, 2025

The recent Bitcoin Improvement Proposal (BIP) by Weichu Deng introduces two new string operations, OP_ISSUBSTR and OP_ISSUBSTRVERIFY, aimed at enhancing Bitcoin script functionalities. This development marks a significant step towards reintroducing string operations in Bitcoin scripts, addressing current development challenges by facilitating on-chain string logic processing, thereby improving script functionality without compromising security. The proposal's details and its implications for Bitcoin scripting are fully documented on [GitHub](https://github.com/Weichu-Deng/bips/blob/OP_ISSUBSTR/bip-yongdong%20wu-OP_ISSUBSTR.md). Weikeng Chen's discussion highlights the integration of CSFS with CTV (CheckTemplateVerify) in signet, aiming to advance BitVM operations and reduce on-chain data overhead. This integration within the LNHANCE project is poised to enhance application development through the synergistic use of CTV and CSFS, reflecting a broader trend of technical innovation and community involvement in the Bitcoin ecosystem. Peter Todd's contribution discusses the integration of taproot annex support into Libre Relay, informed by a pull request by Joost Jager, emphasizing the standardization of transactions containing taproot annexes. This initiative underscores ongoing efforts to refine Bitcoin's protocol, with detailed criteria to mitigate transaction pinning attacks and ensure compatibility with future soft-forks, demonstrated through specific GitHub commits and [pull requests](https://github.com/bitcoin/bitcoin/pull/27926). Salvatoshi introduces the drafting of a BIP for `OP_CHECKCONTRACTVERIFY` (`OP_CCV`), a significant advancement enabling state-carrying UTXOs that support Pay-to-Taproot (P2TR) inputs and outputs. This development enhances Bitcoin's scripting capabilities, allowing for more complex contract designs, and underscores the opcode's potential for introspecting and modifying UTXOs with embedded data and rules. The comprehensive discussion on `OP_CCV` and its integration within Bitcoin's scripting language is available at [DelvingBitcoin.org](https://delvingbitcoin.org/t/op-checkcontractverify-and-its-amount-semantic/1527). Steven Roose's analysis of the Ark protocol and its utilization of CTV for creating virtual UTXOs (vUTXOs) showcases the protocol's innovative approach to transaction facilitation and ownership transfer. This use of CTV, especially within the clArk implementation, highlights the protocol's efficiency and the broader applications of Bitcoin's scripting advancements. Further exploration of the Ark protocol's integration of CTV and its implications for the Bitcoin ecosystem can be found through various resources, including an [introduction to the Ark protocol](https://ark-protocol.org/intro/vtxos/index.html).

Bitcoin TLDR

#71

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Mar 10 - Mar 16, 2025

Sjors Provoost introduced Testnet 4 in BIP94, supported by Bitcoin Core version 28, aimed at addressing the impracticality of Testnet3, while preserving backward compatibility for users who choose to remain with the older testnet. This development reflects the Bitcoin community's commitment to enhancing testing environments for developers and exploring innovative approaches like a proof-of-work signet to improve network functionality ([source](https://gnusha.org/pi/bitcoindev/C899E966-6444-41EC-B977-96CFFCBF936A@sprovoost.nl/T/#m3c7b2c859613fc8c66511c5012274855f2b92f7c)). Martin Habovลกtiak discussed the security of hashed keys against quantum computing threats, proposing a Quantum Resistant (QR) signing mechanism that allows for secure transactions even after quantum computers become viable. This approach, which includes a method to secure bitcoin through QR scripts, highlights the ongoing efforts to enhance Bitcoin's security in anticipation of future quantum computing advancements ([source](https://gnusha.org/pi/bitcoindev/CALkkCJY=dv6cZ_HoUNQybF4-byGOjME3Jt2DRr20yZqMmdJUnQ@mail.gmail.com/T/#u#m5c0e99289f1ada916372eb653f7c769864aca3a9)). The Lightning Network Daemon (LND) version 0.18.0 introduced a revised sweeper subsystem that improves transaction batching and fee bumping by incorporating HTLC deadlines and budget considerations. This advancement supports more dynamic and efficient fee adjustments, enhancing security and reducing risks associated with missed deadlines or inadequate fee payments, marking a significant step forward in managing on-chain transactions for the Lightning Network ([source](https://delvingbitcoin.org/t/lnds-deadline-aware-budget-sweeper/1512)). Josh proposed a cross-input scripting capability for Bitcoin, enhancing transaction functionality by allowing additional spending criteria commitments at the time of signing. This proposal, seeking feedback for a potential soft fork, could significantly expand Bitcoin's programmability and transaction capabilities, underscoring the community's role in guiding the future of Bitcoin's scripting capabilities ([source](https://delvingbitcoin.org/t/post-signature-cross-input-scripting-using-the-taproot-annex/1520)).

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