Podcasts about optech

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)

Mark “Murch” Erhardt and Mike Schmidt are joined by David Gumberg, Lauren Shareshian, Jameson Lopp, Steven Roose, and Tim Ruffing to discuss Newsletter #365.News● Testing compact block prefilling (1:13:00) ● Mempool-based fee estimation library (1:33:53) Changing consensus● Migration from quantum-vulnerable outputs (49:17) ● Taproot-native `OP_TEMPLATEHASH` proposal (1:13) ● Proposal to allow longer relative timelocks (12:57) ● Security against quantum computers with taproot as a commitment scheme (23:48) Releases and release candidates● Bitcoin Core 29.1rc1 (1:46:55) Notable code and documentation changes● Bitcoin Core #29954 (1:48:12) ● Bitcoin Core #33004 (1:49:13) ● LDK #3246 (1:52:37) ● LDK #3892 (1:53:35) ● LDK #3662 (1:54:31)

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse and Jesse Posner to discuss ⁠Newsletter #364⁠.News● LND gossip filter DoS vulnerability (0:53) ● Chain code withholding for multisig scripts (15:16) ● Research indicates common Bitcoin primitives are compatible with quantum-resistant signature algorithms (38:46) Selected Q&A from Bitcoin Stack Exchange● How does Bitcoin Core handle reorgs larger than 10 blocks? (57:36) ● Advantages of a signing device over an encrypted drive? (1:01:29) ● Spending a taproot output through the keypath and scriptpath? (1:03:21) Releases and release candidates● Libsecp256k1 v0.7.0 (1:04:26) Notable code and documentation changes● Bitcoin Core #32521 (1:05:16) ● Bitcoin Core #31829 (1:15:00) ● LDK #3801 (1:19:51) ● LDK #3842 (1:21:11) ● BIPs #1890 (1:21:57) ● BOLTs #1232 (1:23:53)

Mark “Murch” Erhardt and Mike Schmidt are joined by Davidson Souza to discuss ⁠Newsletter #363⁠.Changes to services and client software● Floresta v0.8.0 released (0:45) ● RGB v0.12 announced (20:38) ● FROST signing device available (25:34) ● Gemini adds taproot support (29:44) ● Electrum 4.6.0 released (38:14) Releases and release candidates● LND v0.19.2-beta (38:51) Notable code and documentation changes● Bitcoin Core #32604 (39:38) ● Bitcoin Core #32618 (40:55) ● Bitcoin Core #31553 (43:03) ● Core Lightning #7725 (46:53) ● Eclair #2716 (47:23) ● LDK #3628 (52:19) ● LDK #3890 (53:22) ● LND #10001 (54:30)

Mark “Murch” Erhardt and Mike Schmidt are joined by Josh Doman and Gloria Zhao to discuss ⁠Newsletter #362⁠.News● Compressed descriptors (0:34) Bitcoin Core PR Review Club● Improve TxOrphanage denial of service bounds (9:14) Releases and release candidates● LND v0.19.2-beta.rc2 (46:22) Notable code and documentation changes● Core Lightning #8377 (47:17) ● BDK #1957 (50:41) ● BIPs #1888 (51:18)

Sanket Kanjalkar, Jonas Nick, Tadge Dryja, Steven Roose, and Brandon Black join Mark “Murch” Erhardt and Mike Schmidt to discuss Newsletter #361.News● Separating onion message relay from HTLC relay (2:06) Changing consensus● CTV+CSFS advantages for PTLCs (5:45) ● Vault output script descriptor (15:21) ● Continued discussion about CTV+CSFS advantages for BitVM (22:57) ● Open letter about CTV and CSFS (27:59) ● OP_CAT enables Winternitz signatures (1:12:27) ● Commit/reveal function for post-quantum recovery (1:22:46) ● OP_TXHASH variant with support for transaction sponsorship (1:53:31) Notable code and documentation changes● Bitcoin Core #32540 (2:13:29) ● Bitcoin Core #32638 (2:14:47) ● Bitcoin Core #32819 (2:15:25) ● LDK #3618 (2:17:41)

Mark “Murch” Erhardt and Mike Schmidt are joined by Daniela Brozzoni and Naiyoma to discuss ⁠Newsletter #360⁠.News● Fingerprinting nodes using `addr` messages (1:00) ● Does any software use `H` in descriptors? (29:36) Selected Q&A from Bitcoin Stack Exchange● Is there any way to block Bitcoin Knots nodes as my peers? (33:42) ● What does OP_CAT do with integers? (42:00) ● Async Block Relaying With Compact Block Relay (BIP152) (43:03) ● Why is attacker revenue in selfish mining disproportional to its hash-power? (52:47) Releases and release candidates● Bitcoin Core 28.2 (57:51) Notable code and documentation changes● Bitcoin Core #31981 (59:21) ● Eclair #3109 (1:00:48) ● LND #9950 (1:01:31) ● LDK #3868 (1:01:56) ● LDK #3873 (1:03:10) ● Libsecp256k1 #1678 (1:04:11) ● BIPs #1803 (1:06:21)

Mark “Murch” Erhardt and Mike Schmidt are joined by Bryan Bishop, Robin Linus, and Rene Pickhardt to discuss ⁠Newsletter #359⁠.News● Proposal to restrict access to Bitcoin Core Project discussion (1:11) ● Improvements to BitVM-style contracts (21:17) ● Channel rebalancing research (41:57) Changes to services and client software● Cove v1.0.0 released (1:03:58) ● Liana v11.0 released (1:04:59) ● Stratum v2 STARK proof demo (1:06:48) ● Breez SDK adds BOLT12 and BIP353 (1:08:41) Releases and release candidates● Core Lightning 25.05 (1:09:51) Notable code and documentation changes● Eclair #3110 (1:11:32) ● Eclair #3101 (1:12:41) ● LDK #3817 (1:13:35) ● LDK #3623 (1:14:04) ● BTCPay Server #6755 (1:15:11) ● Rust libsecp256k1 #798 (1:15:54)

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Poinsot, Peter Todd, Josh Doman, and TheCharlatan to discuss ⁠Newsletter #358⁠.News● Calculating the selfish mining danger threshold (0:52) ● Relay censorship resistance through top mempool set reconciliation (59:26) ● Updating BIP390 to allow duplicate participant keys in `musig()` expressions (55:50) ● Descriptor encryption library (31:35) Bitcoin Core PR Review Club● Separate UTXO set access from validation functions (43:05) Releases and release candidates● Core Lightning 25.05rc1 (58:25) ● LND 0.19.1-beta (58:38) Notable code and documentation changes● Bitcoin Core #32406 (19:54) ● LDK #3793 (1:14:21) ● LDK #3792 (1:14:59) ● LND #9127 (1:18:38) ● LND #9858 (1:20:04) ● BOLTs #1243 (1:21:49)

Mark “Murch” Erhardt and Mike Schmidt are joined by Jose SK, Clara Shikhelman, Vojtěch Strnad, Robin Linus, and Dan Gould to discuss ⁠Newsletter #357⁠.News● Syncing full nodes without witnesses (1:30) Changing consensus● Quantum computing report (17:38) ● Transaction weight limit with exception to prevent confiscation (41:49) ● Removing outputs from the UTXO set based on value and time (53:47) Releases and release candidates● Core Lightning 25.05rc1 (1:07:45) ● LND 0.19.1-beta.rc1 (1:08:02) Notable code and documentation changes● Bitcoin Core #32582 (1:09:08) ● Bitcoin Core #31375 (1:07:45) ● BIPs #1483 (1:14:16)

Mark “Murch” Erhardt and Mike Schmidt are joined by Carla Kirk-Cohen, Joost Jager, and Elias Rohrer to discuss Newsletter #356.News● Do attributable failures reduce LN privacy? (0:57) Selected Q&A from Bitcoin Stack Exchange● Which transactions get into blockreconstructionextratxn? (40:40) ● Why would anyone use OP_RETURN over inscriptions, aside from fees? (46:47) ● Why is my Bitcoin node not receiving incoming connections? (48:25) ● How do I configure my node to filter out transactions larger than 400 bytes? (49:44) ● What does not publicly routable node in Bitcoin Core P2P mean? (52:21) ● Why would a node would ever relay a transaction? (52:46) ● Is selfish mining still an option with compact blocks and FIBRE? (55:00) Releases and release candidates● Core Lightning 25.05rc1 (57:25) ● LDK 0.1.3 (57:56) Notable code and documentation changes● Bitcoin Core #31622 (1:00:32) ● Eclair #3065 (37:15) ● LDK #3796 (1:03:04) ● BIPs #1760 (1:03:40) ● BIPs #1850 (1:06:13) ● BIPs #1793 (1:09:05)

Dave Harding is joined by Alex Myers and Rodolfo Novak to discuss Newsletter #355.Changes to services and client software● Cake Wallet added payjoin v2 support (2:38) ● Sparrow adds pay-to-anchor features (6:37) ● Safe Wallet 1.3.0 released (8:00) ● COLDCARD Q v1.3.2 released (9:15) ● Transaction batching using payjoin (19:07) ● JoinMarket Fidelity Bond Simulator (20:46) ● Bitcoin opcodes documented (26:39) ● Bitkey code open sourced (27:59) Releases and release candidates● LND 0.19.0-beta (33:43) ● Core Lightning 25.05rc1 (40:12) Notable code and documentation changes● Bitcoin Core #32423 (46:47) ● Bitcoin Core #31444 (49:51) ● Core Lightning #8140 (52:08) ● Core Lightning #8136 (54:16) ● Core Lightning #8266 (55:52) ● Core Lightning #8021 (58:38) ● Core Lightning #8226 (1:01:29) ● LND #9801 (1:02:54)

Mark “Murch” Erhardt and Mike Schmidt are joined by Eugene Siegel, Chris Stewart, Bram Cohen, and Robin Linus to discuss Newsletter #353.News● Vulnerability disclosure affecting old versions of Bitcoin Core (1:17) Changing consensus● Proposed BIP for 64-bit arithmetic in Script (5:28) ● Proposed opcodes for enabling recursive covenants through quines (23:11) ● Description of benefits to BitVM from `OP_CTV` and `OP_CSFS` (36:39) Releases and release candidates● LND 0.19.0-beta.rc4 (1:07:28) Notable code and documentation changes● Bitcoin Core #32155 (1:08:27) ● Bitcoin Core #28710 (1:09:38) ● Core Lightning #8272 (1:13:28) ● LND #8330 (1:14:09) ● Rust Bitcoin #4458 (1:14:52) ● BIPs #1848 (1:04:33) ● BIPs #1841 (1:16:25) ● BIPs #1821 (1:16:42)

Mark “Murch” Erhardt and Mike Schmidt are joined by Ruben Somsen, Salvatore Ingala, and Stéphan Vuylsteke to discuss Newsletter #353.News● BIP30 consensus failure vulnerability (0:52) ● Avoiding BIP32 path reuse (28:33) Bitcoin Core PR Review Club● Add bitcoin wrapper executable (16:38) Releases and release candidates● LND 0.19.0-beta.rc4 (45:01) Notable code and documentation changes● Core Lightning #8227 (45:18) ● Core Lightning #8162 (46:43) ● Core Lightning #8166 (47:44) ● Core Lightning #8237 (48:49) ● LDK #3700 (49:28) ● Rust Bitcoin #4387 (49:55) ● BIPs #1835 (50:15) ● BIPs #1800 (55:03) ● BOLTs #1245 (56:37)

Mark “Murch” Erhardt and Sjors Provoost discuss Newsletter #352.News● Comparison of cluster linearization techniques (0:41) ● Increasing or removing Bitcoin Core's `OP_RETURN` size limit (6:46) Releases and release candidates● LND 0.19.0-beta.rc3 (1:01:16) Notable code and documentation changes● Bitcoin Core #31250 (1:02:10) ● Eclair #3064 (1:06:02) ● BTCPay Server #6684 (1:07:46) ● BIPs #1555 (1:10:34)

Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick and Salvatore Ingala to discuss Newsletter #351.News● Interactive aggregate signatures compatible with secp256k1 (0:50) ● Standardized backup for wallet descriptors (21:34) Selected Q&A from Bitcoin Stack Exchange● Practicality of half-aggregated schnorr signatures? (17:16) ● What's the largest size OP_RETURN payload ever created? (41:17) ● Non-LN explanation of pay-to-anchor? (43:29) ● Up-to-date statistics about chain reorganizations? (48:08) ● Are Lightning channels always P2WSH? (52:33) ● Child-pays-for-parent as a defense against a double spend? (53:40) ● What values does CHECKTEMPLATEVERIFY hash? (59:06) ● Why can't Lightning nodes opt to reveal channel balances for better routing efficiency? (59:32) ● Does post-quantum require hard fork or soft fork? (1:02:27) Releases and release candidates● LND 0.19.0-beta.rc3 (1:07:39) Notable code and documentation changes● Bitcoin Core #31247 (1:07:58) ● LDK #3601 (1:10:14)

Mark “Murch” Erhardt and Mike Schmidt are joined by Niklas Gögge to discuss ⁠Newsletter #350⁠.Changes to services and client software● Bitcoin Knots version 28.1.knots20250305 released (11:26) ● PSBTv2 explorer announced (13:51) ● LNbits v1.0.0 released (14:38) ● The Mempool Open Source Project® v3.2.0 released (15:22) ● Coinbase MPC library released (17:25) ● Lightning Network liquidity tool released (21:20) ● Versioned Storage Service announced (22:25) ● Fuzz testing tool for Bitcoin nodes (1:17) ● Bitcoin Control Board components open-sourced (23:50) Releases and release candidates● Bitcoin Core 29.0 (25:13) ● LND 0.19.0-beta.rc2 (34:41) Notable code and documentation changes● LDK #3593 (35:04) ● BOLTs #1242 (35:57) Correction (37:38)

Mark “Murch” Erhardt and Dave Harding are joined by Sebastian Falbesoner, Ruben Somsen, and Abubakar Sadiq Ismail to discuss ⁠Newsletter #349⁠.News● SwiftSync speedup for initial block download (0:34) Bitcoin Core PR Review Club● Add Fee rate Forecaster Manager (29:33) Releases and release candidates● Core Lightning 25.02.1 (46:54) ● Core Lightning 24.11.2 (47:03) ● BTCPay Server 2.1.0 (48:14) ● Bitcoin Core 29.0rc3 (49:25) ● LND 0.19.0-beta.rc2 (51:21) Notable code and documentation changes● LDK #2256 (53:52) ● LND #9669 (56:16) ● Rust Bitcoin #4302 (57:24)

Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick, Jameson Lopp, Steven Roose, Gregory Sanders, and Salvatore Ingala to discuss ⁠Newsletter #348⁠.News● Educational and experimental-based secp256k1 implementation (1:09) Changing consensus● Should vulnerable bitcoins be destroyed? (9:17) ● Securely proving UTXO ownership by revealing a SHA256 preimage (34:52) ● Draft BIP for destroying quantum-insecure bitcoins (44:01) ● Criticism of CTV motivation (51:16) ● CTV+CSFS benefits (1:06:02) ● Benefit of CTV to Ark users (1:24:37) ● OP_CHECKCONTRACTVERIFY semantics (1:31:49) ● Draft BIP published for consensus cleanup (1:58:29) Releases and release candidates● BDK wallet 1.2.0 (2:06:03) ● LDK v0.1.2 (2:06:48) ● Bitcoin Core 29.0rc3 (2:07:13) ● LND 0.19.0-beta.rc1 (2:08:36) Notable code and documentation changes● Bitcoin Core #31363 (2:09:03) ● Bitcoin Core #31278 (2:09:44) ● Eclair #3050 (2:12:41) ● Eclair #2963 (2:13:54) ● Eclair #3045 (2:14:44) ● LDK #3670 (2:15:47) ● LND #9620 (2:16:24)

Mark “Murch” Erhardt and Mike Schmidt are joined by Sjors Provoost and Antoine Poinsot to discuss ⁠Newsletter #347⁠.News● LN upfront and hold fees using burnable outputs (0:54) ● Discussion of testnets 3 and 4 (5:11) ● Plan to relay certain taproot annexes (19:01) Selected Q&A from Bitcoin Stack Exchange● Why is the witness commitment optional? (24:58) ● Can all consensus valid 64 byte transactions be (third party) malleated to change their size? (36:39) ● How long does it take for a transaction to propagate through the network? (47:37) ● Utility of longterm fee estimation (49:31) ● Why are two anchor outputs are used in the LN? (54:34) ● Why are there no BIPs in the 2xx range? (57:19) ● Why doesn't Bech32 use the character b? (59:55) ● Bech32 error detection and correction reference implementation (1:00:23) ● How to safely spend/burn dust? (1:02:48) ● How is the refund transaction in Asymmetric Revocable Commitments constructed? (1:07:34) ● Which applications use ZMQ with Bitcoin Core? (42:15) Releases and release candidates● Bitcoin Core 29.0rc2 (1:08:21) ● LND 0.19.0-beta.rc1 (1:08:55) Notable code and documentation changes● Bitcoin Core #31603 (45:12) ● Eclair #3044 (1:09:45) ● Eclair #3026 (1:10:38) ● LDK #3649 (1:11:02) ● LDK #3665 (1:11:59) ● LND #8453 (1:14:28) ● BIPs #1792 (1:16:00) ● BIPs #1782 (1:16:40)

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 ⁠Newsletter #346⁠.News● Discussion of LND's dynamic feerate adjustment system (1:24) Changes to services and client software● Wally 1.4.0 released (17:17) ● Bitcoin Core Config Generator announced (18:05) ● A regtest development environment container (18:55) ● Explora transaction visualization tool (20:17) ● Hashpool v0.1 tagged (21:35) ● DMND launching pooled mining (24:36) ● Krux adds taproot and miniscript (22:21) ● Source-available secure element announced (23:01) ● Nunchuk launches Group Wallet (45:04) ● FROSTR protocol announced (46:03) ● Bark launches on signet (46:57) ● Cove Bitcoin wallet announced (48:43) Releases and release candidates● Bitcoin Core 29.0rc2 (50:38) Notable code and documentation changes● Bitcoin Core #31649 (1:03:19) ● Bitcoin Core #31283 (37:27) ● Eclair #3037 (1:15:29) ● LND #9546 (1:16:33) ● LND #9458 (1:17:17) ● BTCPay Server #6581 (1:18:10) ● BDK #1839 (1:20:59) ● BOLTs #1233 (15:39)

Mark “Murch” Erhardt and Mike Schmidt are joined by Sindura Saraswathi, Christian Kümmerle, and Stéphan Vuylsteke to discuss Newsletter #345.News● P2P traffic analysis (1:35) ● Research into single-path LN pathfinding (6:45) ● Probabilistic payments using different hash functions as an xor function (21:17) Bitcoin Core PR Review Club● Stricter internal handling of invalid blocks (26:12) Releases and release candidates● Eclair v0.12.0 (37:49) Notable code and documentation changes● Bitcoin Core #31407 (38:52) ● Eclair #3027 (43:22) ● Eclair #3007 (44:17) ● Eclair #2976 (44:57) ● LDK #3608 (47:17) ● LDK #3624 (48:12) ● LDK #3016 (50:28) ● LDK #3629 (52:15) ● BDK #1838 (53:06)

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Matt Corallo, and Hunter Beast to discuss Newsletter #344.News● Disclosure of fixed LND vulnerability allowing theft (0:57) ● Discussion about Bitcoin Core's priorities (10:49) Changing consensus● Bitcoin Forking Guide (1:01:11) ● Update on BIP360 pay-to-quantum-resistant-hash (P2QRH) (34:37) ● Private block template marketplace to prevent centralizing MEV (21:06) Releases and release candidates● Core Lightning 25.02 (1:09:57) Notable code and documentation changes● Eclair #3019 (1:11:21) ● Eclair #3016 (1:12:05) ● LDK #3342 (33:13) ● Rust Bitcoin #4114 (1:12:50) ● Rust Bitcoin #4111 (1:14:29) ● BIPs #1758 (1:15:09) ● BIPs #1750 (1:17:07) ● BIPs #1712 (1:18:10)

Dave Harding and Mike Schmidt discuss Newsletter #343.

Dave Harding and Mike Schmidt are joined by Bastien Teinturier and Joost Jager discuss ⁠Newsletter #342⁠.News● Allowing mobile wallets to settle channels without extra UTXOs (0:59) ● Continued discussion about an LN quality of service flag (13:14) Changes to services and client software● Ark Wallet SDK released (40:28) ● Zaprite adds BTCPay Server support (40:57) ● Iris Wallet desktop released (41:21) ● Sparrow 2.1.0 released (41:41) ● Scure-btc-signer 1.6.0 released (42:38) ● Py-bitcoinkernel alpha (43:48) ● Rust-bitcoinkernel library (44:30) ● BIP32 cbip32 library (45:56) ● Lightning Loop moves to MuSig2 (46:22) Notable code and documentation changes● Bitcoin Core #27432 (47:01) ● Bitcoin Core #30529 (48:29) ● Bitcoin Core #31384 (49:42) ● Core Lightning #8059 (50:52) ● Core Lightning #7985 (53:41) ● Core Lightning #7887 (54:32) ● Eclair #2967 (26:06) ● Eclair #2979 (32:24) ● Eclair #3002 (34:32) ● LDK #3575 (57:35) ● LDK #3562 (23:51) ● BOLTs #1205 (26:13)

Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #341.News● Continued discussion about probabilistic payments (0:34) ● Continued discussion about ephemeral anchor scripts for LN (7:26) ● Stats on orphan evictions (14:31) ● Updated proposal for updated BIP process (27:08) Bitcoin Core PR Review Club● Cluster mempool: introduce TxGraph (35:43) Releases and release candidates● LND v0.18.5-beta (43:48) ● Bitcoin Inquisition 28.1 (44:10) Notable code and documentation changes● Bitcoin Core #25832 (51:43) ● Eclair #2989 (55:49) ● LDK #3440 (56:36) ● LND #9470 (57:14) ● BTCPay Server #6580 (58:15)

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Johan Halseth, Pieter Wuille, Sergi Delgado, Bastien Teinturier, Oleksandr Kurbatov, Antoine Poinsot and Bob McElrath to discuss Newsletter #340.News● Channel force closure vulnerability in LDK (2:14) ● Zero-knowledge gossip for LN channel announcements (16:01) ● Discovery of previous research for finding optimal cluster linearization (26:29) ● Erlay update (46:38) ● Tradeoffs in LN ephemeral anchor scripts (1:09:50) ● Emulating OP_RAND (1:30:30) ● Discussion about lowering the minimum transaction relay feerate (1:36:33) Changing consensus● Updates to cleanup soft fork proposal (1:43:46) ● Request for a covenant design supporting Braidpool (2:28:59) ● Deterministic transaction selection from a committed mempool (2:04:52) ● Fast difficulty adjustment algorithm for a DAG blockchain (2:19:24) Releases and release candidates● BDK Wallet 1.1.0 (2:39:15) ● LND v0.18.5-beta.rc1 (2:39:43) Notable code and documentation changes● Bitcoin Core #21590 (38:58) ● Eclair #2983 (1:23:30) ● Eclair #2968 (1:27:53) ● LDK #3556 (2:40:31) ● LND #9456 (2:41:10)

Mark “Murch” Erhardt and Dave Harding are joined by Matt Morehouse and 0xB10C to discuss Newsletter #339.News● Vulnerability in LDK claim processing (0:47)● Replacement cycling attacks with miner exploitation (17:28)● Updated stats on compact block reconstruction (23:56)Selected Q&A from Bitcoin Stack Exchange● Who uses or wants to use PSBTv2 (BIP370)? (32:38)● In the bitcoin's block genesis, which parts can be filled arbitrarily? (34:41)● Lightning force close detection (36:47)● Is a segwit-formatted transaction with all inputs of non-witness program type valid? (40:01)● P2TR Security Question (41:41)● What exactly is being done today to make Bitcoin quantum-safe? (44:27)● What are the harmful effects of a shorter inter-block time? (47:57)● Could proof-of-work be used to replace policy rules? (51:19)● How does MuSig work in real Bitcoin scenarios? (54:54)● How does the -blocksxor switch that obfuscates the blocks.dat files work? (57:18)● How does the related key attack on Schnorr signatures work? (59:42)Releases and release candidates● LDK v0.1.1 (1:01:19)Notable code and documentation changes● Bitcoin Core #31376 (1:03:24)● Bitcoin Core #31583 (1:04:48)● Bitcoin Core #31590 (1:05:40)● Eclair #2982 (1:07:17)● BDK #1614 (1:11:39)● BOLTs #1110 (1:12:08)

Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth and Dave Harding to discuss ⁠Newsletter #338⁠. News - Draft BIP for unspendable keys in descriptors (0:49) - PSBTv2 integration testing (9:55) - Correction about offchain DLCs (15:25) Changes to services and client software - Bull Bitcoin Mobile Wallet adds payjoin (28:10) - Bitcoin Keeper adds miniscript support (28:52) - Nunchuk adds taproot MuSig2 features (29:26) - Jade Plus signing device announced (32:08) - Coinswap v0.1.0 released (32:36) - Bitcoin Safe 1.0.0 released (35:14) - Bitcoin Core 28.0 policy demonstration (35:41) - Rust-payjoin 0.21.0 released (36:21) - PeerSwap v4.0rc1 (37:34) - Joinpool prototype using CTV (38:24) - Rust joinstr library announced (39:58) - Strata bridge announced (40:36) Releases and release candidates - BTCPay Server 2.0.6 (41:41) Notable code and documentation changes - Bitcoin Core #31397 (42:19) - Eclair #2896 (44:21) - LDK #3408 (46:02) - LND #9405 (47:57)

Mark “Murch” Erhardt and Mike Schmidt are joined by vnprc to discuss ⁠⁠Newsletter #337⁠⁠. News - Continued discussion about rewarding pool miners with tradeable ecash shares (0:35) - Offchain DLCs (38:32) Releases and release candidates - LDK v0.1 (39:34) Notable code and documentation changes - Eclair #2936 (41:32) - Rust Bitcoin #3792 (42:46) - BDK #1789 (43:42) - BIPs #1687 (46:39) - BIPs #1396 (50:15)

Mark “Murch” Erhardt and Mike Schmidt are joined by Abubakar Sadiq Ismail, Gregory Sanders, and Daniel Roberts to discuss ⁠Newsletter #336⁠. News Investigating mining pool behavior before fixing a Bitcoin Core bug (1:07) Contract-level relative timelocks (15:04) Multiparty LN-Symmetry variant with penalties for limiting published updates (29:06) Releases and release candidates Bitcoin Core 28.1 (39:54) BDK 0.30.1 (40:45) LDK v0.1.0-beta1 (42:01) Notable code and documentation changes Bitcoin Core #28121 (42:22) BDK #1592 (43:14)

Dave Harding and Mike Schmidt are joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss ⁠Newsletter #335⁠. News Deanonymization attacks against centralized coinjoin (1:39) Updated ChillDKG draft (14:09) Changing consensus CTV enhancement opcodes (18:41) Adjusting difficulty beyond 256 bits (31:52) Transitory soft forks for cleanup soft forks (33:44) Quantum computer upgrade path (48:09) Consensus cleanup timewarp grace period (56:10) Releases and release candidates BDK wallet-1.0.0 (1:06:44) LND 0.18.4-beta (1:17:28) Core Lightning v24.11.1 (1:18:13) Bitcoin Core 28.1rc2 (1:18:47) LDK v0.1.0-beta1 (1:19:37) Notable code and documentation changes Bitcoin Core #31223 (1:20:19) Eclair #2888 (1:21:09) LDK #3495 (1:22:35) LDK #3436 (1:24:31) LDK #3435 (1:25:02) LDK #3365 (1:26:04) LDK #3340 (1:26:41) BDK #1670 (1:28:47) BIPs #1689 (1:31:45) BIPs #1697 (1:33:49) BLIPs #52 (1:34:21) BLIPs #54 (1:35:40)

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, Niklas Gögge, Gloria Zhao, and Rearden to discuss ⁠Newsletter #334: 2024 Year-in-Review Special⁠. January Fee-dependent timelocks (16:18) Optimized contract protocol exits (17:20) LN-Symmetry proof-of-concept implementation (18:22) February Replace by feerate (22:32) Human-readable payment instructions (27:25) Improved ASMap generation (28:09) LN dual funding (32:33) Trustless betting on future feerates (32:56) Summary 2024: Vulnerability disclosures (7:05) March BINANAs and BIPs (33:33) Enhanced feerate estimation (34:41) More efficient transaction sponsorship (46:08) April Consensus cleanup (50:06) Reforming the BIPs process (51:08) Inbound routing fees (53:10) Weak blocks (54:01) Restarting testnet (57:43) Developers arrested (1:00:06) Summary 2024: Cluster mempool (1:01:10) May Silent payments (1:06:51) BitVMX (1:07:37) Anonymous usage tokens (1:09:50) LN channel upgrades (1:12:00) Ecash for pool miners (1:13:33) Miniscript specification (1:14:54) Utreexo beta (1:16:16) June LN payment feasibility and channel depletion (1:18:17) Quantum-resistant transaction signing (1:20:02) Summary 2024: P2P transaction relay (1:20:39) July Blinded paths for BOLT11 invoices (1:31:07) ChillDKG key generation for threshold signatures (1:31:47) BIPs for MuSig and threshold signatures (1:32:18) August Hyperion network simulator (1:33:00) Full RBF (1:33:56) Summary 2024: Covenants and script upgrades (2:08) September Hybrid jamming mitigation tests and tweaks (1:35:10) Shielded CSV (1:38:40) LN offline payments (1:41:22) October BOLT12 offers (1:42:34) Mining interfaces, block withholding, and share validation cost (1:43:13) Summary 2024: Major releases of popular infrastructure projects (1:50:41) November SuperScalar timeout tree channel factories (1:51:19) Fast and cheap low-value offchain payment resolution (1:53:29) Summary 2024: Bitcoin Optech (1:55:17)

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, /dev/fd0, and Gloria Zhao to discuss Newsletter #333. News Vulnerability allowing theft from LN channels with miner assistance (1:11) Deanonymization vulnerability affecting Wasabi and related software (12:00) Insights into channel depletion (18:12) Poll of opinions about covenant proposals (31:14) Incentive-based pseudo-covenants (41:49) Bitcoin Core developer meeting summaries (46:45) Bitcoin Core PR Review Club Track and use all potential peers for orphan resolution (48:18) Changes to services and client software Java-based HWI released (1:00:32) Saving Satoshi Bitcoin development education game announced (1:01:24) Neovim Bitcoin Script plugin (1:02:19) Proton Wallet adds RBF (1:03:36) Selected Q&A from Bitcoin Stack Exchange How long does Bitcoin Core store forked chains? (1:03:51) What is the point of solo mining pools? (1:05:02) Is there a point to using P2TR over P2WSH if I only want to use the script path? (1:11:17) Releases and release candidates Core Lightning 24.11 (1:13:23) BTCPay Server 2.0.4 (1:16:59) LND 0.18.4-beta.rc2 (1:17:23) Bitcoin Core 28.1RC1 (1:17:44) BDK 1.0.0-beta.6 (1:18:36) Notable code and documentation changes Bitcoin Core #31096 (1:18:58) Bitcoin Core #31175 (1:19:51) Bitcoin Core #31112 (1:21:37) LDK #3446 (1:22:56) Rust Bitcoin #3682 (1:26:13) BTCPay Server #5743 (1:27:17) BDK #1756 (1:30:23) BIPs #1535 (1:31:12) BOLTs #1180 (1:32:33)

Dave Harding and Mike Schmidt are joined by René Pickhardt and Christian Decker to discuss Pickhardt's ⁠Lightning Network channel depletion research⁠. Summary of Pickhardt's research (1:01) Why look at wealth distributions? (5:45) What can be learned from depletion? (11:38) Circular rebalancing (13:33) What determines where the spanning tree is? (15:28) Mitigating depletion (20:14) Adjacent channels and their impact (26:39) Multiparty channels, channel factories, and Ark (29:52) Hub-and-spoke topology discussion (41:06) What real world data would inform the theoretical? (54:54)

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Riard and Antoine Poinsot to discuss ⁠Newsletter #332⁠. News Transaction censorship vulnerability (0:55) Continued discussion about consensus cleanup soft fork proposal (19:20) Releases and release candidates Eclair v0.11.0 (46:45) LDK v0.0.125 (47:26) Core Lightning 24.11rc3 (47:59) LND 0.18.4-beta.rc1 (48:21) Bitcoin Core 28.1RC1 (48:34) Notable code and documentation changes Bitcoin Core #30708 (49:15) Core Lightning #7832 (50:32) LND #8270 (51:36) LND #8390 (52:49) BIPs #1534 (55:49)

Mark “Murch” Erhardt and Mike Schmidt are joined by Anthony Towns to discuss ⁠Newsletter #331⁠. News Lisp dialect for Bitcoin scripting (0:48) Selected Q&A from Bitcoin Stack Exchange How does ColliderScript improve Bitcoin and what features does it enable? (43:24) Why do standardness rules limit transaction weight? (48:10) Is the scriptSig spending an PayToAnchor output expected to always be empty? (56:16) What happens to the unused P2A outputs? (57:13) Why doesn't Bitcoin's PoW algorithm use a chain of lower-difficulty hashes? (1:01:47) Clarification on false value in Script (1:04:38) What is this strange microtransaction in my wallet? (1:06:02) Are there any UTXOs that can not be spent? (1:09:04) Why was BIP34 not implemented via the coinbase tx's locktime or nSequence? (1:13:15) Releases and release candidates Core Lightning 24.11rc2 (1:15:19) BDK 0.30.0 (1:15:49) LND 0.18.4-beta.rc1 (1:16:16) Notable code and documentation changes Bitcoin Core #31122 (1:17:17) Core Lightning #7852 (1:20:25) Core Lightning #7740 (1:21:27) Core Lightning #7719 (1:22:48) Eclair #2935 (1:23:47) LDK #3137 (1:24:34) LND #8337 (1:26:22)

Mark “Murch” Erhardt and Mike Schmidt are joined by ZmnSCPxj, Vojtěch Strnad, Moonsettler, Brandon Black, Ethan Heilman, and Dusty Daemon to discuss Newsletter #330.

Mark “Murch” Erhardt and Gregory Sanders discuss Newsletter #328. News Disclosure of a vulnerability affecting Bitcoin Core versions before 25.1 (0:53) Bitcoin Core PR Review Club Ephemeral Dust (6:54) Releases and release candidates Bitcoin Core 27.2 (14:55) Libsecp256k1 0.6.0 (15:40) Notable code and documentation changes LDK #3360 (17:40) LDK #3207 (18:45)

Mark “Murch” Erhardt discusses Newsletter #329. News MAD-based offchain payment resolution (OPR) protocol (0:21) Papers about IP-layer censorship of LN payments (3:10) Releases and release candidates BTCPay Server 2.0.3 (6:21) Notable code and documentation changes Bitcoin Core #30592 (8:29) Bitcoin Core #30930 (9:46) LDK #3283 (11:35) LND #7762 (12:31)

October 15, 2024 ~ Ronia Kruse, Co-Founder and CEO of Optech and Digital Lakes joins Paul W Smith live at the Detroit Economic Club.

Join us for exclusive conversations with top supply chain and technology thought leaders. We are excited to launch our new season of OpTech Insights as we dive deep into proven technologies and emerging trends essential for staying ahead in today's fast-paced supply chain environment.We have an exciting line up of some top industry experts who will be sharing their insights and experiences, covering innovative solutions and strategic approaches that drive your business and people forward. Whether you're looking to optimize operations, enhance your competitive edge, or stay informed about the latest industry developments, OpTech Insights is your go-to resource.Hosted by Todd Greenwald, OpTech Insights offers unparalleled expertise and insights, making it the perfect guide through the complexities of supply chain and industry trends.Tune in and stay ahead of the curve with OpTech Insights – where technology and operational expertise intersect.Audio Engineer & Production: Neo GreenwaldWant to learn more: Heartland Blog & News