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Bitcoin Optech: Newsletter #378 Recap

Bitcoin Optech: Newsletter #378 Recap

Update: 2025-11-04
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Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #378.


News

● CPU DoS from unconfirmed transaction processing (1:00 )


Selected Q&A from Bitcoin Stack Exchange

● Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged? (17:53 )

● What is the smallest valid transaction that can be included in a block? (22:59 )

● Why does Bitcoin Core continue to give witness data a discount even when it is used for inscriptions? (25:38 )

● The ever-growing Bitcoin blockchain size? (39:17 )

● I read that OP_TEMPLATEHASH is a variant of OP_CTV. How do they differ? (44:59 )


Releases and release candidates

● LND 0.20.0-beta.rc1 (49:59 )

● Eclair 0.13.1 (50:43 )


Notable code and documentation changes

● Bitcoin Core #29640 (51:21 )

● Core Lightning #8400 (54:15 )

● Eclair #3173 (54:53 )

● LND #10280 (56:56 )

● BIPs #2006 (57:27 )

● BIPs #1975 (1:00:58 )

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Bitcoin Optech: Newsletter #378 Recap

Bitcoin Optech: Newsletter #378 Recap

Bitcoin Optech