Bitcoin Optech Podcast

Bitcoin Optech
  • 5.0 (3)
  • TECH NEWS
  • UPDATED WEEKLY

Join Bitcoin Optech as we discuss Bitcoin and Lightning technology each week and review our newsletters. https://bitcoinops.org/

  1. 12/24/2025

    Bitcoin Optech: Newsletter #385: 2025 Year-in-Review Special Recap

    Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier, Rearden Code, and Pieter Wuille to discuss Newsletter #385: 2025 Year-in-Review Special. January ● Updated ChillDKG draft (43:08) ● Offchain DLCs (45:53) ● Compact block reconstructions (2:29:27) February ● Erlay update (1:53:55) ● LN ephemeral anchor scripts (0:50) ● Probabilistic payments (54:45) March ● Bitcoin Forking Guide (3:29:35) ● Private block template marketplace to prevent centralizing MEV (3:05:28) ● LN upfront and hold fees using burnable outputs (13:12) April ● SwiftSync speedup for initial block download (2:09:35) ● DahLIAS interactive aggregate signatures (3:26:02) Summary 2025: Quantum (58:07) May ● Cluster mempool (1:22:11) ● Increasing or removing Bitcoin Core’s OP_RETURN policy limit (2:45:43) June ● Calculating the selfish mining danger threshold (2:20:39) ● Fingerprinting nodes using addr messages (3:11:38) ● Garbled locks (3:19:01) Summary 2025: Soft fork proposals (26:57) July ● Chain code delegation (49:07) August ● Utreexo draft BIPs (2:15:57) ● Lowering the minimum relay feerate (2:39:52) ● Peer block template sharing (2:56:01) ● Differential fuzzing of Bitcoin and LN implementations (3:16:08) Summary 2025: Stratum v2 (2:04:49) September ● Details about the design of Simplicity (3:23:01) ● Partitioning and eclipse attacks using BGP interception (3:13:47) October ● Discussions about arbitrary data (3:01:15) ● Channel jamming mitigation simulation results and updates (11:05) November ● Comparing performance of ECDSA signature validation in OpenSSL vs. libsecp256k1 (2:01:47) ● Modeling stale rates by propagation delay and mining centralization (2:22:32) ● BIP3 and the BIP process (3:31:37) ● Bitcoin Kernel C API introduced (3:35:35) December ● Splicing (7:33)

    3h 43m

  2. 12/16/2025

    Bitcoin Optech: Newsletter #384 Recap

    Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Matt Morehouse and Salvatore Ingala to discuss ⁠Newsletter #384⁠. News ● Critical vulnerabilities fixed in LND 0.19.0 (0:59) ● A virtualized secure enclave for hardware signing devices (21:11) Changes to services and client software ● Interactive transaction visualization tool (37:16) ● BlueWallet v7.2.2 released (38:20) ● Stratum v2 updates (38:42) ● Auradine announces Stratum v2 support (40:18) ● LDK Node 0.7.0 released (41:58) ● BIP-329 Python Library 1.0.0 release (43:30) ● Bitcoin Safe 1.6.0 released (44:34) Selected Q&A from Bitcoin Stack Exchange ● Does a clearnet connection to my Lightning node require a TLS certificate? (45:12) ● Why do different implementations produce different DER signatures for the same private key and hash? (45:58) ● Why is the miniscript `after` value limited at 0x80000000? (49:27) Notable code and documentation changes ● Bitcoin Core #33528 (53:12) ● Bitcoin Core #33723 (54:17) ● Bitcoin Core #33993 (56:35) ● Bitcoin Core #33553 (59:54) ● Eclair #3220 (1:01:52) ● LDK #4231 (1:02:48) ● LND #10396 (1:05:40) ● BTCPay Server #7022 (1:08:26) ● Rust Bitcoin #5379 (1:09:32) ● BIPs #2050 (1:10:06)

    1h 13m

  3. 12/09/2025

    Bitcoin Optech: Newsletter #383 Recap

    Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Moonsettler and Julian to discuss Newsletter #383. News ● Consensus bug in NBitcoin library (1:04) Changing consensus ● LNHANCE soft fork (24:00) ● Benchmarking the varops budget (5:09) ● SLH-DSA (SPHINCS) post-quantum signature optimizations (45:29) Releases and release candidates ● Core Lightning v25.12 (1:02:24) ● LDK 0.2 (1:03:43) Notable code and documentation changes ● Core Lightning #8728 (1:05:14) ● Core Lightning #8702 (1:06:55) ● Core Lightning #8735 (1:07:24) ● LDK #4226 (1:11:41) ● LND #10341 (1:12:49) ● BTCPay Server #6986 (1:14:00) ● BIPs #2015 (1:16:18)

    1h 21m

  4. 12/03/2025

    Bitcoin Optech: Newsletter #382 Recap

    Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt discuss ⁠Newsletter #382⁠. News ● Stats on compact block reconstructions updates (0:34) ● Motion to activate BIP3 (7:26) Selected Q&A from Bitcoin Stack Exchange ● Do pruned nodes store witness inscriptions? (24:27) ● Increasing probability of block hash collisions when difficulty is too high (29:33) ● What is the purpose of the initial 0x04 byte in all extended public and private keys? (33:25) Releases and release candidates ● LND v0.20.0-beta (34:57) ● Core Lightning v25.12rc1 (35:57) Notable code and documentation changes ● Bitcoin Core #33872 (37:55) ● Bitcoin Core #33629 (42:05) ● Core Lightning #8677 (49:49) ● Core Lightning #8546 (51:28) ● Core Lightning #8682 (53:19) ● LDK #4197 (55:39) ● LDK #4234 (1:00:56) ● LDK #4148 (1:02:17) ● BDK #2027 (1:03:04)

    1h 6m

  5. 11/25/2025

    Bitcoin Optech: Newsletter #381 Recap

    Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Antoine Poinsot and ZmnSCPxj to discuss Newsletter #381. News ● Modeling stale rates by propagation delay and mining centralization (1:03) ● Private key handover for collaborative closure (30:55) Changes to services and client software ● Arkade launches (52:32) ● Mempool monitoring mobile application (55:25) ● Web-based policy and miniscript IDE (56:25) ● Phoenix Wallet adds taproot channels (57:45) ● Nunchuk 2.0 launches (59:19) ● LN gossip traffic analysis tool announced (1:01:49) Notable code and documentation changes ● Bitcoin Core #33745 (1:04:23) ● Core Lightning #8537 (1:09:28) ● Core Lightning #8608 (1:11:26) ● Core Lightning #8646 (1:13:34) ● Core Lightning #8569 (1:17:44) ● Core Lightning #8558 (1:22:46) ● LDK #4126 (1:24:11) ● LDK #4208 (1:26:37) ● LND #9432 (1:27:58) ● BOLTs #1284 (1:31:38) ● BOLTs #1044 (1:33:33)

    1h 36m

  6. 11/18/2025

    Bitcoin Optech: Newsletter #380 Recap

    Mark “Murch” Erhardt and Mike Schmidt are joined by TheCharlatan to discuss Newsletter #380. Releases and release candidates ● LND 0.20.0-beta.rc4 (1:30) Notable code and documentation changes ● Bitcoin Core #30595 (2:56) ● Bitcoin Core #33443 (28:03) ● Core Lightning #8656 (29:42) ● Core Lightning #8671 (30:22) ● LDK #4204 (33:09) ● BIPs #2022 (34:45)

    44 min

  7. 11/12/2025

    Bitcoin Optech: Newsletter #379 Recap

    Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot to discuss Newsletter #379. News ● Comparing performance of ECDSA signature validation in OpenSSL vs. libsecp256k1 (1:47) Changing consensus ● Multiple discussions about restricting data (14:05) ● Post-quantum signature aggregation (1:00:05) ● Native STARK proof verification in Bitcoin Script (1:18:47) ● BIP54 implementation and test vectors (35:47) Releases and release candidates ● Core Lightning 25.09.2 (1:30:54) ● LND 0.20.0-beta.rc3 (1:31:44) Notable code and documentation changes ● Bitcoin Core #31645 (1:32:34) ● Core Lightning #8636 (1:40:08) ● Core Lightning #8639 (1:43:18) ● Core Lightning #8635 (1:44:31) ● Eclair #3209 (1:46:25) ● Eclair #3206 (1:46:59) ● Eclair #3210 (1:49:31) ● LDK #4140 (1:54:13) ● LDK #4168 (1:59:12) ● Rust Bitcoin #5116 (2:01:06) ● BTCPay Server #6922 (2:05:05)

    2h 7m

  8. 11/04/2025

    Bitcoin Optech: Newsletter #378 Recap

    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)

    1h 3m
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Ratings & Reviews

5
out of 5
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About

Join Bitcoin Optech as we discuss Bitcoin and Lightning technology each week and review our newsletters. https://bitcoinops.org/

Information

  • Creator
    Bitcoin Optech
  • Years Active
    2023 - 2025
  • Episodes
    179
  • Rating
    Clean
  • Copyright
    © Bitcoin Optech
  • Show Website
    Bitcoin Optech Podcast

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