Podcasts about optech

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by rkrux, Roland Bewick, and Steven Roose to discuss ⁠Newsletter #410⁠.News● Discussion of removing RBF signaling from wallet transactions (0:57) Changes to services and client software● Sparrow Wallet 2.5.0 adds silent payments receiving (59:55) ● Bark live on Bitcoin mainnet (29:46) ● Arké Ark wallet announced (32:18) ● Noah Ark wallet announced (31:52) ● Alby Hub v1.23.0 released (15:00) ● JoinMarket NG 0.32.0 released (1:01:02) Notable code and documentation changes● Bitcoin Core #35221 (1:02:13) ● Bitcoin Core #35254 (1:06:59) ● Bitcoin Core #35498 (1:09:26) ● Eclair #3318 (1:11:06) ● LND #10789 (1:13:05) ● Rust Bitcoin #6321 (1:14:09) ● LDK #4685 (1:16:14)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Vasil Dimov to discuss Newsletter #409.News● Draft BIP for testnet5 (0:31) Releases and release candidates● LND 0.21.0-beta (17:25) ● Core Lightning 26.06.1 (20:19) Notable code and documentation changes● Bitcoin Core #35410 (21:28) ● Bitcoin Core #34779 (38:00) ● Bitcoin Core #32150 (41:36) ● LDK #4647 (45:14) ● BTCPay Server #7218 (51:34) ● BIPs #2186 (53:07)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Pyth and Ademan to discuss Newsletter #408.News● A post-quantum path for BIP324 (37:15) ● Discussion of QR signing payloads for miniscript wallets (1:27) Changing consensus● CTV-only vault proof of concept (13:08) ● Post-quantum Lightning discussion (43:41) ● Quantum attack game theory (47:24) ● BIP54 64-byte transactions and potential legitimate uses (49:15) Releases and release candidates● Core Lightning 26.06 (1:11:15) Notable code and documentation changes● Bitcoin Core #35269 (1:15:42) ● Bitcoin Core #34644 (1:20:45) ● Bitcoin Core #34198 (1:22:21) ● LND #10813 (1:26:32) ● Rust Bitcoin #6250 (1:28:05) ● BOLTs #1338 (1:36:06) ● BOLTs #1326 (1:37:23)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Chandra Pratap to discuss Newsletter #407.News● Core Lightning assertion DoS disclosure (0:47) ● Bitcoin Core developer meeting transcripts (14:34) Releases and release candidates● Eclair v0.14.0 (20:30) ● Core Lightning 26.06rc2 (23:01) Notable code and documentation changes● Bitcoin Core #33966 (24:14) ● Bitcoin Core #34917 (28:04) ● Bitcoin Core #35017 (30:52) ● BIPs #1944 (35:25) ● BIPs #2108 (36:14) ● Eclair #3192 (39:28) ● LDK #4584 (40:28) ● LDK #4628 (41:27) ● LND #10552 (43:35) ● LND #10820 (48:52)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Oliver Gugger and 0xB10C to discuss Newsletter #406.News● Significant updates to BIP322 Generic Signed Message Format (1:17) ● TCP hole punching for Bitcoin nodes behind NATs (17:39) Changes to services and client software● Ibis Wallet announced (40:15) ● LDK Server announced (41:10) ● Mempool.space v3.3.0 released (42:06) ● peer-observer P2P monitoring tooling (32:28) Notable code and documentation changes● Bitcoin Core #29136 (43:27) ● Bitcoin Core #34893 (47:24) ● Bitcoin Core #34860 (48:20) ● Bitcoin Core #31298 (53:52) ● Bitcoin Core #28802 (57:04) ● Eclair #3298 (58:52) ● LDK #4575 (1:02:08) ● LND #10814 (1:03:13) ● Rust Bitcoin #6191 (1:04:35) ● BLIPs #42 (1:06:20)

Mark “Murch” Erhardt and Mike Schmidt are joined by Fabian Jahr to discuss ⁠Newsletter #405⁠.News● Bitcoin Core script interpreter remote crash disclosure (22:00) ● BIP proposal for UTXO set sharing over P2P network (0:42) Releases and release candidates● Core Lightning 26.06rc1 (34:58) Notable code and documentation changes● Bitcoin Core #35209 (36:44) ● BIPs #2116 (38:20) ● BIPs #2141 (44:13) ● Core Lightning #9116 (48:35) ● Core Lightning #9110 (50:27) ● LDK #4598 (52:10) ● LDK #4528 (53:30) ● LND #10612 (54:37) ● BTCPay Server #7354 (57:12) ● BDK #2195 (58:10) ● Bitcoin Inquisition #100 (1:00:00) ● BINANAs #20 (1:02:42)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Daniela Brozzoni, Naiyoma, and Thomas Voegtlin to discuss Newsletter #404.News● Possible solutions to node fingerprinting (1:14) ● Public fraud proof for just-in-time channels (19:21) Notable code and documentation changes● Bitcoin Core #33796 (37:11) ● Bitcoin Core #21283 (39:30)● BIPs #2150 (45:30) ● Eclair #3144 (52:30) ● Eclair #2887 (54:00) ● LDK #4592 (55:27) ● LND #9153 (56:52) ● Rust Bitcoin #5835 (58:02) ● BOLTs #995 (58:56) ● BOLTs #1228 (1:01:40) ● BOLTs #1327 (1:03:28)

Gustavo Flores Echaiz and Brandon Black are joined by Olaoluwa Osuntokun to discuss Newsletter #403.News● Binary fuse filters as an alternative to BIP158's GCS (19:05) Changing consensus● Post-quantum HD wallets with fallback SPHINCS keys (31:07) ● Discussion of a post-quantum output type (34:42) ● Proposal to embed post-quantum keys in tapscript without consensus changes (38:03) ● BIP54 demonstration of slow blocks on signet (43:28) ● Post-quantum BIP86 recovery using zk-STARK proofs of BIP32 seeds (1:05) Releases and release candidates● Core Lightning 26.04.1 (48:16) ● BTCPay Server 2.3.8 (50:15) ● BTCPay Server 2.3.9 (51:52) Notable code and documentation changes● Bitcoin Core #33671 (52:39) ● Bitcoin Core #34885 (58:01) ● Bitcoin Core #33920 (59:57) ● Bitcoin Core #34911 (1:02:00) ● BIPs #1548 (1:04:47) ● HWI #831 (1:08:17) ● BDK #2188 (1:09:11) ● BDK #2115 (1:10:14)

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Toby Sharp to discuss Newsletter #402.News● Hornet Node's declarative executable specification of Bitcoin consensus rules (1:02) ● Onion message jamming in the Lightning Network (23:22) Selected Q&A from Bitcoin Stack Exchange● Why did BIP342 replace CHECKMULTISIG with a new opcode, instead of just removing FindAndDelete from it? (40:58) ● Does SIGHASH_ANYPREVOUT commit to the tapleaf hash or the full taproot merkle path? (43:28) ● What does the BIP86 tweak guarantee in a MuSig2 Lightning channel, beyond address format? (45:23) Releases and release candidates● Bitcoin Core 31.0 (47:10) ● Core Lightning 26.04 (54:26) ● LND 0.21.0-beta.rc1 (56:35) Notable code and documentation changes● Bitcoin Core #33477 (57:55) ● Bitcoin Core #35006 (1:02:21) ● BIPs #1895 (1:04:31) ● BIPs #2142 (1:12:47) ● LDK #4555 (1:14:28) ● LND #10713 (1:16:23) ● LND #10754 (1:18:14)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Remix7531 and Luis Schwab to discuss Newsletter #401.News● Discussion of using nested MuSig2 in the Lightning Network (34:05) ● Formal verification of secp256k1 modular scalar multiplication (01:10) Changes to services and client software● Coldcard 6.5.0 adds MuSig2 and miniscript (40:56) ● Frigate 1.4.0 released (41:46) ● Bitcoin Backbone updates (47:10) ● Utreexod 0.5 released (16:18) ● Floresta 0.9.0 released (19:41) Releases and release candidates● Bitcoin Core 31.0rc4 (48:01) ● Core Lightning 26.04rc3 (49:00) Notable code and documentation changes● Bitcoin Core #34401 (50:01) ● Bitcoin Core #35032 (51:51) ● Core Lightning #9021 (55:33) ● Core Lightning #9046 (56:53) ● LDK #4515 (58:25) ● LDK #4558 (59:51) ● LND #9985 (1:01:53) ● BTCPay Server #7250 (1:04:07) ● BIPs #2089 (1:07:28)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Julian Moik to discuss ⁠Newsletter #400⁠.Bitcoin Core PR Review Club● Testing Bitcoin Core 31.0 Release Candidates (29:00) Notable code and documentation changes● Bitcoin Core #33908 (31:56) ● Eclair #3283 (37:06) ● LDK #4529 (38:12) ● LDK #4494 (39:55) ● LND #10666 (45:31) ● BIPs #2099 (46:40) ● BIPs #2118 (1:15) ● BIPs #2134 (51:08)

April 7, 2026 ~ Ronia Kruse, President and CEO of OpTech joins Ryan Goldberg at the Detroit Economic Club. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Armin Sabouri, Pyth, Conduition, and Jonas Nick to discuss Newsletter #399.News● Wallet fingerprinting risks for payjoin privacy (44:15) ● Draft BIP for a wallet backup metadata format (1:04:26) Changing consensus● Compact Isogeny PQC can replace HD wallets, key-tweaking, silent payments (24:23) ● Varops budget and tapscript leaf 0xc2 (aka Script Restoration) are BIPs 440 and 441 (1:13:24) ● SHRIMPS: 2.5 KB post-quantum signatures across multiple stateful devices (02:02) Releases and release candidates● Bitcoin Core 31.0rc2 (1:22:07) ● Core Lightning 26.04rc2 (1:23:32) ● BTCPay Server 2.3.7 (1:24:04) Notable code and documentation changes● Bitcoin Core #32297 (1:26:29) ● Bitcoin Core #34379 (1:28:54) ● Eclair #3269 (1:30:37) ● LDK #4486 (1:32:59) ● LDK #4428 (1:35:00) ● LND #9982 (1:37:13) ● LND #10063 (1:39:00)

Mike Schmidt and Gustavo Flores Echaiz are joined by Dusty Daemon to discuss ⁠Newsletter #398⁠.Selected Q&A from Bitcoin Stack Exchange● What is meant by Bitcoin doesn't use encryption? (28:44) ● When and why did Bitcoin Script shift to a commit–reveal structure? (30:26) ● Does P2TR-MS (Taproot M-of-N multisig) leak public keys? (31:50) ● Does OP_CHECKSIGFROMSTACK intentionally allow cross-UTXO signature reuse? (33:24) Releases and release candidates● Bitcoin Core 28.4 (35:05) ● Core Lightning 26.04rc1 (36:19) Notable code and documentation changes● Bitcoin Core #33259 (37:51) ● Bitcoin Core #33414 (39:49) ● Bitcoin Core #34846 (41:38) ● Core Lightning #8450 (13:39) ● Core Lightning #8856 (22:08) ● Eclair #3247 (44:21) ● LDK #4472 (25:00) ● LND #10602 (47:25) ● LND #10481 (49:38) ● BOLTs #1160 (0:51)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Matt Corallo, Gregory Sanders, and Sebastian van Staa to discuss ⁠Newsletter #397⁠.Changes to services and client software● Cake Wallet adds Lightning support (1:06:09) ● Sparrow 2.4.0 and 2.4.2 released (1:13:15) ● Blockstream Jade adds Lightning via Liquid (1:15:33) ● Lightning Labs releases agent tools (14:49) ● Tether launches MiningOS (1:17:38) ● FIBRE network relaunched (1:35) ● TUI for Bitcoin Core released (1:19:34) Releases and release candidates● Bitcoin Core 31.0rc1 (28:24) ● BTCPay Server 2.3.6 (1:20:55) Notable code and documentation changes● Bitcoin Core #31560 (1:21:55) ● Bitcoin Core #31774 (1:23:35) ● Core Lightning #8817 (1:25:12) ● Eclair #3265 (1:27:41) ● LDK #4427 (22:36) ● LDK #4484 (23:45) ● BIPs #1974 (49:52)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Jonathan Harvey-Buschel to discuss ⁠Newsletter #396⁠.News● Collision-resistant hash function for Bitcoin Script (0:30) ● Continued discussion of Gossip Observer traffic analysis tool (8:58) Releases and release candidates● BDK wallet 3.0.0-rc.1 (28:04) Notable code and documentation changes● Bitcoin Core #26988 (30:39) ● Bitcoin Core #34692 (32:22) ● LDK #4304 (33:21) ● LDK #4416 (35:41) ● LND #10089 (38:01) ● Libsecp256k1 #1777 (39:46) ● BIPs #2047 (42:39) ● BOLTs #1316 (46:42) ● BOLTs #1312 (47:26)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Jon McAlpine, Antoine Poinsot, Mike Casey, and Ethan Heilman to discuss Newsletter #395.News● A standard for stateless VTXO verification (1:31) ● Draft BIP for expanded `nVersion` nonce space for miners (1:23:45) Changing consensus● Extensions to standard tooling for TEMPLATEHASH-CSFS-IK support (13:52) ● Hourglass V2 update (25:40) ● Algorithm agility for Bitcoin (51:15) ● The limitations of cryptographic agility in Bitcoin (1:05:15) Releases and release candidates● Bitcoin Core 28.4rc1 (1:36:53) Notable code and documentation changes● Bitcoin Core #33616 (1:38:30) ● Bitcoin Core #34616 (1:42:23) ● Eclair #3256 (1:46:20) ● Eclair #3258 (1:48:34) ● Eclair #3255 (1:50:14) ● LDK #4402 (1:52:27) ● LND #10604 (1:53:56) ● BIPs #1699 (1:55:34) ● BIPs #2106 (1:57:30) ● BIPs #2068 (2:01:28) ● BOLTs #1301 (2:04:54)

Mark “Murch” Erhardt and Mike Schmidt are joined by Craig Raw and Fabian Jahr to discuss Newsletter #393.News● Draft BIP for output script descriptor annotations (1:25) Selected Q&A from Bitcoin Stack Exchange● Is Bitcoin BIP324 v2 P2P transport distinguishable from random traffic? (35:16) ● What if a miner just broadcasts the header and never gives the block? (39:53) Releases and release candidates● Bitcoin Core 28.4rc1 (47:27) ● Rust Bitcoin 0.33.0-beta (47:46) Notable code and documentation changes● Bitcoin Core #34568 (48:48) ● Bitcoin Core #34184 (50:37) ● Bitcoin Core #24539 (51:57) ● Bitcoin Core #34329 (54:56) ● Bitcoin Core #28792 (15:35) ● Bitcoin Core #32138 (54:56) ● Bitcoin Core #34512 (56:44) ● Core Lightning #8490 (58:16) ● Eclair #3250 (59:07) ● LDK #4373 (59:55) ● BDK #2081 (1:02:13)

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Sebastian Falbesoner and Oleksandr Kurbatov to discuss ⁠Newsletter #392⁠.News● Proposal to limit the number of per-group silent payment recipients (1:13) ● BLISK, Boolean circuit Logic Integrated into the Single Key (26:43) Releases and release candidates● Bitcoin Core 29.3 (49:18) ● LDK 0.2.2 (51:16) ● HWI 3.2.0 (52:20) ● Bitcoin Inquisition 29.2 (53:54) Notable code and documentation changes● Bitcoin Core #32420 (56:05) ● Core Lightning #8772 (1:02:29) ● LND #10507 (1:03:56) ● LDK #4387 (1:05:48) ● LDK #4355 (1:08:14) ● LDK #4354 (1:09:21) ● LDK #4303 (1:10:52) ● HWI #784 (1:13:10) ● BIPs #2092 (1:15:02) ● BIPs #2004 (1:16:33) ● BIPs #2017 (1:19:44) ● Bitcoin Inquisition #99 (1:26:53)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Misha Komarov, Erik De Smedt, and arbedout to discuss ⁠Newsletter #393⁠.News● Recent OP_RETURN output statistics (45:54) ● Bitcoin PIPEs v2 (1:33) Changes to services and client software● Second releases hArk-based Ark software (20:21) ● Amboss announces RailsX (55:35) ● Nunchuk adds silent payment support (56:11) ● Electrum adds submarine swap features (58:08) ● Sigbash v2 announced (33:56) Releases and release candidates● BTCPay Server 2.3.5 (1:00:11) ● LND 0.20.1-beta (1:01:43) Notable code and documentation changes● Bitcoin Core #33965 (1:02:55) ● Eclair #3248 (1:05:55) ● Eclair #3246 (1:07:08) ● LDK #4335 (1:08:52) ● LDK #4318 (1:14:32) ● LND #10542 (1:15:55) ● BIPs #1670 (1:17:02) ● BOLTs #1236 (1:27:50) ● BOLTs #1289 (1:29:10)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Toby Sharp, Chris Hyunhum Cho, Jonas Nick, and Antoine Poinsot to discuss ⁠Newsletter #391⁠.News● A constant-time parallelized UTXO database (25:40) ● Bithoven: A formally verified, imperative language for Bitcoin Script (44:48) ● Discussion of dust attack mitigations (1:43:33) Changing consensus● SHRINCS: 324-byte stateful post-quantum signatures with static backups (1:30) ● Addressing remaining points on BIP54 (1:10:08) ● Falcon post-quantum signature scheme proposal (20:05) ● SLH-DSA verification can compete with ECC (23:28) Releases and release candidates● LDK 0.1.9 (1:50:27) Notable code and documentation changes● Bitcoin Core #33604 (1:53:10) ● Bitcoin Core #34358 (1:54:58) ● Core Lightning #8824 (1:56:20) ● Eclair #3244 (1:58:17) ● LDK #4263 (2:00:07) ● LDK #4300 (2:01:54) ● LND #10473 (2:03:57) ● Rust Bitcoin #5493 (2:07:36)

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Liam Eagen to discuss Newsletter #390.News● Argo: a garbled-circuits scheme with more efficient off-chain computation (0:48) ● LN-Symmetry update (26:05) Selected Q&A from Bitcoin Stack Exchange● What is stored in dbcache and with what priority? (34:21) ● Can one do a coinjoin in Shielded CSV? (24:02) ● In Bitcoin Core, how to use Tor for broadcasting new transactions only? (36:47) ● Brassard-Høyer-Tapp (BHT) algorithm and Bitcoin (BIP360) (38:31) ● Why does BitHash alternate sha256 and ripmed160? (39:24) Releases and release candidates● Libsecp256k1 0.7.1 (41:09) Notable code and documentation changes● Bitcoin Core #33822 (42:59) ● Bitcoin Core #34269 (44:50) ● Core Lightning #8850 (47:38) ● LDK #4349 (49:16) ● Rust Bitcoin #5470 (50:54) ● Rust Bitcoin #5443 (51:26) ● BDK #2037 (52:51) ● BIPs #2076 (55:49) ● BIPs #1500 (59:39)

Mark “Murch” Erhardt and Mike Schmidt are joined by René Pickhardt to discuss ⁠Newsletter #389⁠.News● A mathematical theory of payment channel networks (0:31) Changes to services and client software● Electrum server for testing silent payments (30:04) ● BDK WASM library (33:28) Releases and release candidates● Core Lightning 25.12.1 (35:14) ● LND 0.20.1-beta.rc1 (39:14) Notable code and documentation changes● Bitcoin Core #32471 (40:57) ● Bitcoin Core #34146 (42:02) ● Core Lightning #8831 (45:00) ● LDK #4261 (45:35) ● LDK #4152 (46:24) ● LND #10488 (47:42) ● LND #10331 (48:43) ● Rust Bitcoin #5402 (49:06) ● BIPs #1820 (50:39) ● BOLTs #1306 (51:41) ● BLIPs #59 (53:05)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bruno Garcia to discuss ⁠Newsletter #388⁠.News● An overview of incremental mutation testing in Bitcoin Core (0:43) ● BIP process updated (18:53) Releases and release candidates● Bitcoin Core 30.2 (26:31) ● BTCPay Server 2.3.3 (27:23) Notable code and documentation changes● Bitcoin Core #33819 (28:42) ● Bitcoin Core #29415 (31:44) ● Core Lightning #8830 (42:16) ● Eclair #3233 (44:19) ● Eclair #3237 (47:59) ● LDK #4232 (50:00) ● LND #10296 (52:24) ● BTCPay Server #7068 (53:43) ● BIPs #1982 (55:37)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by René Pickhardt and Craig Raw to discuss ⁠Newsletter #387⁠.News● Bitcoin Core wallet migration bug (0:55) ● Using Ark as a channel factory (7:47) ● Draft BIP for silent payment descriptors (29:02) Releases and release candidates● Bitcoin Core 30.2rc1 (58:34) Notable code and documentation changes● Bitcoin Core #34156 (59:32) ● Bitcoin Core #34085 (1:03:54) ● Bitcoin Core #34197 (1:07:43) ● Bitcoin Core #33135 (1:09:10) ● LDK #4213 (1:11:02) ● Eclair #3217 (1:15:39) ● LND #10367 (1:18:49) ● Rust Bitcoin #5450 (1:22:51) ● Rust Bitcoin #5434 (1:23:40)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Anthony Towns and Mikhail Kudinov to discuss ⁠Newsletter #386⁠.News● Building a vault using blinded co-signers (1:04:09) ● Peer feature negotiation (1:40) Changing consensus● Year 2106 timestamp overflow uint64 migration (1:07:47) ● Relax BIP54 timestamp restriction for 2106 soft fork (1:11:36) ● Understanding and mitigating a CTV footgun (1:16:30) ● CTV activation meeting (1:21:00) ● `OP_CHECKCONSOLIDATION` to enable cheaper consolidations (1:23:11) ● Hash-based signatures for Bitcoin's post-quantum future (20:47) Releases and release candidates● BTCPay Server 2.3.0 (1:28:29) Notable code and documentation changes● Bitcoin Core #33657 (1:30:25) ● Bitcoin Core #32414 (1:33:23) ● Bitcoin Core #32545 (1:39:18) ● Bitcoin Core #33892 (1:42:13) ● Core Lightning #8784 (1:44:35) ● LND #9489 (1:45:54) ● BIPs #2051 (1:50:09) ● BOLTs #1299 (1:56:39) ● BOLTs #1305 (1:59:46)

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)

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)

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)

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)

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)

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)

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)

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)

October 30, 2025 ~ Ronia Kruse, President and CEO of OpTech and Digital Lakes joins Paul W Smith live from the Detroit Economic Club meeting at Motor City Casino. Hosted by Simplecast, an AdsWizz company. See https://pcm.adswizz.com for information about our collection and use of personal data for advertising.

Gustavo Flores Echaiz and Mike Schmidt are joined by Abubakar Sadiq Ismail and Carla Kirk-Cohen to discuss ⁠Newsletter #377⁠.News● Detecting block template feerate increases using cluster mempool (1:06) ● Channel jamming mitigation simulation results and updates (9:28) Changes to services and client software● BULL wallet launches (37:22) ● Sparrow 2.3.0 released (39:40) Releases and release candidates● Core Lightning 25.09.1 (40:47) ● Bitcoin Core 28.3 (41:18) Notable code and documentation changes● Bitcoin Core #33157 (43:00) ● Bitcoin Core #29675 (45:56) ● Bitcoin Core #33517 (46:59) ● Eclair #2792 (49:01) ● LDK #4122 (51:01) ● LND #9868 (52:37) ● LND #10273 (53:48)

Gustavo Flores Echaiz and Mike Schmidt are joined by Francesco Madonna and supertestnet to discuss Newsletter #376.News● Continued discussion of block template sharing (17:30) ● B-SSL a Secure Bitcoin Signing Layer (2:54) Releases and release candidates● Bitcoin Core 30.0 (22:32) ● Bitcoin Core 29.2 (28:44) ● LDK 0.1.6 (29:37) Notable code and documentation changes● Eclair #3184 (30:59) ● Core Lightning #8597 (32:25) ● LDK #4117 (34:05) ● LDK #4077 (35:03) ● LDK #4154 (36:47)

Gustavo Flores Echaiz and Mike Schmidt are joined by Sindura Saraswathi, ZmnSCPxj, and Eugene Siegel to discuss ⁠Newsletter #375⁠.News● Optimal Threshold Signatures (1:56) ● Flattening certain nested threshold signatures (14:33) ● Theoretical limitations on embedding data in the UTXO set (38:14) Bitcoin Core PR Review Club● Compact block harness (27:12) Releases and release candidates● Bitcoin Inquisition 29.1 (45:01) Notable code and documentation changes● Bitcoin Core #33453 (47:16) ● Bitcoin Core #33504 (51:52) ● Core Lightning #8563 (53:55) ● Core Lightning #8523 (56:55) ● Core Lightning #8398 (58:22) ● LDK #4120 (59:47) ● LND #10254 (1:01:35)

Mark “Murch” Erhardt and Mike Schmidt are joined by Gustavo Flores Echaiz to discuss Newsletter #374.Changing consensus● Draft BIPs for Script Restoration (0:40) Releases and release candidates● Bitcoin Core 30.0rc2 (19:19) ● bdk-wallet 2.2.0 (23:39) ● LND v0.20.0-beta.rc1 (24:15) Notable code and documentation changes● Bitcoin Core #33229 (25:03) ● Bitcoin Core #33446 (26:55) ● LDK #3838 (28:11) ● LDK #4098 (30:40) ● LDK #4106 (33:40) ● LDK #4096 (35:43) ● LND #10133 (37:24) ● BDK #2029 (39:08) ● BIPs #1911 (42:15)

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Daniela Brozzoni, and Gustavo Flores Echaiz to discuss Newsletter #373.News● Eclair vulnerability (18:50) ● Research into feerate settings (0:35) Selected Q&A from Bitcoin Stack Exchange● Implications of OP_RETURN changes in upcoming Bitcoin Core version 30.0? (28:27) ● If OP_RETURN relay limits are ineffective, why remove the safeguard instead of keeping it as a default discouragement? (42:12) ● What are the worst-case stress scenarios from uncapped OP_RETURNs in Bitcoin Core v30? (43:25) ● If OP_RETURN needed more room, why was the 80-byte cap removed instead of being raised to 160? (50:39) ● If arbitrary data is inevitable, does removing OP_RETURN limits shift demand toward more harmful storage methods (like UTXO-inflating addresses)? (59:48) ● If OP_RETURN uncapping doesn't increase the UTXO set, how does it still contribute to blockchain bloat and centralization pressure? (1:00:17) ● How does uncapping OP_RETURN impact long-term fee-market quality and security budget? (1:02:11) ● Assurance blockchain will not suffer from illegal content with 100KB OP_RETURN? (1:04:34) ● What analysis shows OP_RETURN uncapping won't harm block propagation or orphan risk? (1:05:25) ● Where does Bitcoin Core keep the XOR obfuscation keys for both block data files and level DB indexes? (1:06:10) ● How robust is 1p1c transaction relay in bitcoin core 28.0? (1:06:34) ● How can I allow getblocktemplate to include sub 1 sat/vbyte transactions? (1:10:37) Releases and release candidates● Bitcoin Core 30.0rc1 (1:13:00) Notable code and documentation changes● Bitcoin Core #33333 (1:15:26) ● Bitcoin Core #28592 (1:18:36) ● Eclair #3171 (1:22:33) ● Eclair #3175 (1:26:41) ● LDK #4064 (1:29:36) ● LDK #4067 (1:31:04) ● LDK #4046 (1:32:43) ● LDK #4083 (1:35:27) ● LND #10189 (1:38:23) ● BIPs #1963 (1:41:17)

Mark “Murch” Erhardt and Mike Schmidt are joined by ZmnSCPxj and Constantine Doumanidis to discuss Newsletter #372.News● LSP-funded redundant overpayments (16:24) ● Partitioning and eclipse attacks using BGP interception (1:02) Changes to services and client software● Zero-knowledge proof of reserve tool (13:49) ● Alternative submarine swap protocol proof of concept (15:12) Releases and release candidates● Bitcoin Core 30.0rc1 (39:14) ● BDK Chain 0.23.2 (1:16:28) Notable code and documentation changes● Bitcoin Core #33268 (1:17:19) ● Eclair #3157 (1:18:56) ● LND #9975 (1:19:52) ● LND #9677 (1:20:21) ● LDK #4045 (1:20:41) ● LDK #4049 (1:20:32) ● BDK #1582 (1:22:18) ● BDK #2000 (1:23:13) ● BDK #2028 (1:24:17)

Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick and Bastien Teinturier to discuss Newsletter #370.News● Provable Cryptography Workbook (0:48) Releases and release candidates● Bitcoin Core 29.1 (10:48) ● Eclair v0.13.0 (11:17) ● Bitcoin Core 30.0rc1 (25:27) Notable code and documentation changes● Bitcoin Core #30469 (33:18) ● Eclair #3163 (33:18) ● Eclair #2308 (40:27) ● Eclair #3021 (45:18) ● Eclair #3142 (48:08) ● LDK #4053 (50:30) ● LDK #3886 (58:12)

Mark “Murch” Erhardt and Mike Schmidt are joined by Russell O'Connor, Olaoluwa Osuntokun, and Jeremy Rubin to discuss Newsletter #370.Changing consensus● Details about the design of Simplicity (37:56) ● Draft BIP for adding elliptic curve operations to tapscript (1:52) ● Draft BIP for OP_TWEAKADD (19:23) Releases and release candidates● Core Lightning v25.09 (59:40) ● Bitcoin Core 29.1rc2 (1:00:24) Notable code and documentation changes● LDK #3726 (1:00:55) ● LDK #4019 (1:02:24) ● LND #9455 (1:03:09) ● LND #10103 (1:04:00) ● HWI #795 (1:05:20)

Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #368.News● Draft BIP for block template sharing (0:30) ● Trusted delegation of script evaluation (28:07) Changes to services and client software● ZEUS v0.11.3 released (33:07) ● Rust Utreexo resources (33:25) ● Peer-observer tooling and call to action (34:11) ● Bitcoin Core Kernel-based node announced (37:22) ● SimplicityHL released (38:23) ● LSP plugin for BTCPay Server (39:17) ● Proto mining hardware and software announced (39:42) ● Oracle resolution demo using CSFS (40:46) ● Relai adds taproot support (41:11) Releases and release candidates● LND v0.19.3-beta (43:09) ● Bitcoin Core 29.1rc1 (43:29) ● Core Lightning v25.09rc2 (43:55) Notable code and documentation changes● Bitcoin Core #32896 (44:33) ● Bitcoin Core #33106 (46:57) ● Core Lightning #8467 (1:02:49) ● Core Lightning #8354 (1:03:26) ● Eclair #3103 (1:04:07) ● Eclair #3134 (1:04:43) ● LDK #3897 (1:05:56)

Mark “Murch” Erhardt and Mike Schmidt are joined by Bruno Garcia and Liam Eagen to discuss Newsletter #369.News● Update on differential fuzzing of Bitcoin and LN implementations (24:56) ● Garbled locks for accountable computing contracts (0:58) Selected Q&A from Bitcoin Stack Exchange● Is it possible to recover a private key from an aggregate public key under strong assumptions? (39:45) ● Are all taproot addresses vulnerable to quantum computing? (41:24) ● Why cant we set the chainstate obfuscation key? (45:20) ● Is it possible to revoke a spending branch after a block height? (52:09) ● Configure Bitcoin Core to use onion nodes in addition to IPv4 and IPv6 nodes? (53:45) Releases and release candidates● Bitcoin Core 29.1rc2 (54:22) ● Core Lightning v25.09rc4 (56:45) Notable code and documentation changes● Bitcoin Core #31802 (57:37) ● LDK #3979 (1:04:46) ● LND #10102 (1:06:19) ● Rust Bitcoin #4907 (1:07:04)

Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #367⁠.Releases and release candidates● LND v0.19.3-beta.rc1 (0:19) ● Bitcoin Core 29.1rc1 (0:46) Notable code and documentation changes● Bitcoin Core #33050 (2:38) ● Bitcoin Core #32473 (11:04)● Bitcoin Core #33077 (17:57) ● Core Lightning #8389 (22:03)

Gloria Zhao and Mike Schmidt are joined by Tadge Dryja and Anthony Towns to discuss ⁠Newsletter #366⁠.News● Draft BIPs proposed for Utreexo (1:03) ● Continued discussion about lowering the minimum relay feerate (23:43) ● Peer block template sharing to mitigate problems with divergent mempool policies (52:27) Bitcoin Core PR Review Club● Add exportwatchonlywallet RPC to export a watchonly version of a wallet (1:11:41)Optech recommends (1:15:50) Releases and release candidates● LND v0.19.3-beta.rc1 (1:17:04) ● BTCPay Server 2.2.0 (1:17:44) ● Bitcoin Core 29.1rc1 (1:18:13) Notable code and documentation changes● Bitcoin Core #32941 (1:21:11) ● Bitcoin Core #31385 (1:24:06) ● Bitcoin Core #31244 (1:26:38) ● Bitcoin Core #30635 (1:29:54) ● Bitcoin Core #28944 (1:32:29) ● Eclair #3133 (1:35:08) ● LND #10097 (1:36:23) ● LND #9625 (1:38:12) ● Rust Bitcoin #4730 (1:38:43) ● BLIPs #55 (1:40:57) Correction (1:42:03)