by Bitcoin Optech
Join Bitcoin Optech as we discuss Bitcoin and Lightning technology each week and review our newsletters. https://bitcoinops.org/
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Publishing Since
7/27/2022
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April 21, 2025
<p>Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick, Jameson Lopp, Steven Roose, Gregory Sanders, and Salvatore Ingala to discuss <a href="https://bitcoinops.org/en/newsletters/2025/04/04/" target="_blank" rel="ugc noopener noreferrer">Newsletter #348</a>.</p><p><br></p><p><strong>News</strong></p><p>● Educational and experimental-based secp256k1 implementation (1:09) </p><p><br></p><p><strong>Changing consensus</strong></p><p>● Should vulnerable bitcoins be destroyed? (9:17) </p><p>● Securely proving UTXO ownership by revealing a SHA256 preimage (34:52) </p><p>● Draft BIP for destroying quantum-insecure bitcoins (44:01) </p><p>● Criticism of CTV motivation (51:16) </p><p>● CTV+CSFS benefits (1:06:02) </p><p>● Benefit of CTV to Ark users (1:24:37) </p><p>● OP_CHECKCONTRACTVERIFY semantics (1:31:49) </p><p>● Draft BIP published for consensus cleanup (1:58:29) </p><p><br></p><p><strong>Releases and release candidates</strong></p><p>● BDK wallet 1.2.0 (2:06:03) </p><p>● LDK v0.1.2 (2:06:48) </p><p>● Bitcoin Core 29.0rc3 (2:07:13) </p><p>● LND 0.19.0-beta.rc1 (2:08:36) </p><p><br></p><p><strong>Notable code and documentation changes</strong></p><p>● Bitcoin Core #31363 (2:09:03) </p><p>● Bitcoin Core #31278 (2:09:44) </p><p>● Eclair #3050 (2:12:41) </p><p>● Eclair #2963 (2:13:54) </p><p>● Eclair #3045 (2:14:44) </p><p>● LDK #3670 (2:15:47) </p><p>● LND #9620 (2:16:24) </p>
April 1, 2025
<p>Mark “Murch” Erhardt and Mike Schmidt are joined by Sjors Provoost and Antoine Poinsot to discuss <a href="https://bitcoinops.org/en/newsletters/2025/03/28/" target="_blank" rel="ugc noopener noreferrer">Newsletter #347</a>.</p><p><br></p><p><strong>News</strong></p><p>● LN upfront and hold fees using burnable outputs (0:54) </p><p>● Discussion of testnets 3 and 4 (5:11) </p><p>● Plan to relay certain taproot annexes (19:01) </p><p><br></p><p><strong>Selected Q&A from Bitcoin Stack Exchange</strong></p><p>● Why is the witness commitment optional? (24:58) </p><p>● Can all consensus valid 64 byte transactions be (third party) malleated to change their size? (36:39) </p><p>● How long does it take for a transaction to propagate through the network? (47:37) </p><p>● Utility of longterm fee estimation (49:31) </p><p>● Why are two anchor outputs are used in the LN? (54:34) </p><p>● Why are there no BIPs in the 2xx range? (57:19) </p><p>● Why doesn't Bech32 use the character b? (59:55) </p><p>● Bech32 error detection and correction reference implementation (1:00:23) </p><p>● How to safely spend/burn dust? (1:02:48) </p><p>● How is the refund transaction in Asymmetric Revocable Commitments constructed? (1:07:34) </p><p>● Which applications use ZMQ with Bitcoin Core? (42:15) </p><p><br></p><p><strong>Releases and release candidates</strong></p><p>● Bitcoin Core 29.0rc2 (1:08:21) </p><p>● LND 0.19.0-beta.rc1 (1:08:55) </p><p><br></p><p><strong>Notable code and documentation changes</strong></p><p>● Bitcoin Core #31603 (45:12) </p><p>● Eclair #3044 (1:09:45) </p><p>● Eclair #3026 (1:10:38) </p><p>● LDK #3649 (1:11:02) </p><p>● LDK #3665 (1:11:59) </p><p>● LND #8453 (1:14:28) </p><p>● BIPs #1792 (1:16:00) </p><p>● BIPs #1782 (1:16:40) </p><p><br></p>
March 26, 2025
<p>Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Yong Yu, Alejandro De La Torre, Jan B, and Marco De Leon to discuss <a href="https://bitcoinops.org/en/newsletters/2025/03/21/" target="_blank" rel="ugc noopener noreferrer">Newsletter #346</a>.</p><p><br></p><p><strong>News</strong></p><p>● Discussion of LND's dynamic feerate adjustment system (1:24) </p><p><br></p><p><strong>Changes to services and client software</strong></p><p>● Wally 1.4.0 released (17:17) </p><p>● Bitcoin Core Config Generator announced (18:05) </p><p>● A regtest development environment container (18:55) </p><p>● Explora transaction visualization tool (20:17) </p><p>● Hashpool v0.1 tagged (21:35) </p><p>● DMND launching pooled mining (24:36) </p><p>● Krux adds taproot and miniscript (22:21) </p><p>● Source-available secure element announced (23:01) </p><p>● Nunchuk launches Group Wallet (45:04) </p><p>● FROSTR protocol announced (46:03) </p><p>● Bark launches on signet (46:57) </p><p>● Cove Bitcoin wallet announced (48:43) </p><p><br></p><p><strong>Releases and release candidates</strong></p><p>● Bitcoin Core 29.0rc2 (50:38) </p><p><br></p><p><strong>Notable code and documentation changes</strong></p><p>● Bitcoin Core #31649 (1:03:19) </p><p>● Bitcoin Core #31283 (37:27) </p><p>● Eclair #3037 (1:15:29) </p><p>● LND #9546 (1:16:33) </p><p>● LND #9458 (1:17:17) </p><p>● BTCPay Server #6581 (1:18:10) </p><p>● BDK #1839 (1:20:59) </p><p>● BOLTs #1233 (15:39) </p>
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