Bitcoin Optech Podcast

By Bitcoin OptechNews Tech News

Bitcoin Optech Podcast episodes

September 18, 2024Bitcoin Optech: Newsletter #320 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Bruno Garcia, Shehzan Maredia, Gloria Zhao, Fabian Jahr, and Gregory Sanders to discuss ⁠Newsletter #320⁠.
News
Mutation testing for Bitcoin Core (1:39)

DLC-based loan contract execution (9:15)
Bitcoin Core PR Review Club
Testing Bitcoin Core 28.0 Release Candidates (21:08)
Releases and release candidates
LND v0.18.3-beta (51:33)

BDK 1.0.0-beta.2 (53:05)

Bitcoin Core 28.0rc1 (53:14)
Notable code and documentation changes
Bitcoin Core #30509 (53:38)

Bitcoin Core #29605 (1:00:52)
1 hr 4 min
September 10, 2024Bitcoin Optech: Newsletter #319 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Filippo Merli, Lorenzo Bonazzi, Matt Corallo, Eric Voskuil, and rkrux to discuss ⁠Newsletter #319⁠.
News
Stratum v2 extension for fee revenue sharing (1:49)

OP_CAT research fund (17:53)

Mitigating merkle tree vulnerabilities (22:43)
Releases and release candidates
Core Lightning 24.08 (55:21)

LDK 0.0.124 (57:59)

LND v0.18.3-beta.rc2 (1:06:19)

BDK 1.0.0-beta.2 (1:06:43)

Bitcoin Core 28.0rc1 (1:07:27)
Notable code and documentation changes
Bitcoin Core #30454 (1:15:05)

Bitcoin Core #22838 (1:17:41)

Eclair #2865 (1:19:56)

LND #9009 (1:21:49)

LDK #3268 (1:23:33)

BIPs #1657 (1:26:55)
1 hr 30 min
September 03, 2024Bitcoin Optech: Newsletter #318 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Jay Beddict to discuss ⁠Newsletter #318⁠.
News
New Bitcoin Mining Development mailing list (0:48)
Selected Q&A from Bitcoin Stack Exchange
Can a BIP152 compact block be sent before validation by a node that doesn't know all transactions? (15:03)

Did Segwit (BIP141) eliminate all txid malleability issues listed in BIP62? (18:13)

Why are the checkpoints still in the codebase in 2024? (22:35)

Bulletproof++ as generic ZKP ala SNARKs? (26:28)

How can OP_CAT be used to implement additional covenants? (28:13)

Why do some bech32 bitcoin addresses contain a large number of 'q's? (32:25)

How does a 0-conf signature bond work? (37:29)
Releases and release candidates
Core Lightning 24.08rc2 (42:45)

LND v0.18.3-beta.rc1 (43:13)

BDK 1.0.0-beta.2 (43:43)

Bitcoin Core 28.0rc1 (45:10)
Notable code and documentation changes
LDK #3263 (48:15)

LDK #3247 (49:10)

BDK #1569 (50:13)
53 min
August 27, 2024Bitcoin Optech: Newsletter #317 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Bob McElrath and moonsettler to discuss ⁠Newsletter #317⁠.
News
Simple (but imperfect) anti-exfiltration protocol (0:53)
Changes to services and client software
Proton Wallet announced (23:33)

CPUNet testnet announced (25:38)

Lightning.Pub launches (38:52)

Taproot Assets v0.4.0-alpha released (39:45)

Stratum v2 benchmarking tool released (41:31)

STARK verification PoC on signet (42:52)

SeedSigner 0.8.0 released (48:48)

Floresta 0.6.0 released (50:25)
Releases and release candidates
Core Lightning 24.08rc2 (51:52)

LND v0.18.3-beta.rc1 (52:33)
Notable code and documentation changes
Bitcoin Core #28553 (53:18)

Bitcoin Core #30246 (56:39)

Bitcoin Core GUI #824 (1:02:10)

Core Lightning #7540 (1:04:20)

Core Lightning #7403 (1:05:20)

LND #8943 (1:06:13)

BDK #1478 (1:07:26)

BDK #1533 (1:08:12)

BOLTs #1182 (1:11:49)

BLIPs #39 (1:12:55)
1 hr 15 min
August 20, 2024Bitcoin Optech: Newsletter #316 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier and Hennadii Stepanov to discuss Newsletter #316.

News
New time warp vulnerability in testnet4 (1:05)

Onion message DoS risk discussion (14:20)

Optional identification and authentication of LN payers (28:04)

Bitcoin Core switch to CMake build system (36:15)
Releases and release candidates
BDK 1.0.0-beta.1 (53:55)

Core Lightning 24.08rc2 (54:10)

LND v0.18.3-beta.rc1 (54:29)
Notable code and documentation changes
Bitcoin Core #29519 (55:01)

Bitcoin Core #30598 (59:29)

Bitcoin Core #28280 (1:02:18)

Bitcoin Core #28052 (1:04:47)

Core Lightning #7528 (1:08:01)

Core Lightning #7533 (1:10:11)

Core Lightning #7517 (1:11:19)

LND #8955 (1:13:08)

LND #8886 (1:14:39)

LND #8967 (1:19:45)

LDK #3215 (1:22:13)

BLIPs #27 (1:26:27)
1 hr 33 min
August 13, 2024Bitcoin Optech: Newsletter #315 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Corallo, Greg Sanders, Sivaram Dhakshinamoorthy to discuss ⁠Newsletter #315⁠.
News
Faster seed exfiltration attack (1:24)

Block withholding attacks and potential solutions (17:21)

Statistics on compact block reconstruction (21:47)

Replacement cycle attack against pay-to-anchor (36:23)

Proposed BIP for scriptless threshold signatures (42:24)

Optimistic verification of zero-knowledge proofs using CAT, MATT, and Elftrace (50:40)
Bitcoin Core PR Review Club (33:15)
Releases and release candidates
Libsecp256k1 0.5.1 (53:11)

BDK 1.0.0-beta.1 (53:43)
Notable code and documentation changes
Bitcoin Core #30493 (54:38)

Bitcoin Core #30285 (57:33)

Bitcoin Core #30352 (1:02:26)

Bitcoin Core #29775 (1:02:39)

Core Lightning #7476 (1:08:21)

Eclair #2884 (1:08:55)

LND #8952 (1:12:10)

LND #8735 (1:13:40)

BIPs #1601 (1:14:44)
1 hr 21 min
August 06, 2024Bitcoin Optech: Newsletter #314 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Sergi Delgado to discuss ⁠Newsletter #314⁠.

News
Disclosure of vulnerabilities affecting Bitcoin Core versions before 22.0 (0:56)

Optimizing block building with cluster mempool (11:23)

Hyperion network event simulator for the Bitcoin P2P network (14:30)
Releases and release candidates
BDK 1.0.0-beta.1 (41:01)
Notable code and documentation changes
Bitcoin Core #30515 (41:36)

Bitcoin Core #30126 (43:00)

Bitcoin Core #30482 (44:18)

Bitcoin Core #30275 (45:18)

Bitcoin Core #30408 (47:29)

Core Lightning #7474 (49:27)

LND #8891 (51:21)

LDK #3139 (51:57)

Rust Bitcoin #3010 (52:48)
57 min
July 30, 2024Bitcoin Optech: Newsletter #313 Recap
Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #313⁠.
News
Varied discussion of free relay and fee bumping upgrades (0:31)
Selected Q&A from Bitcoin Stack Exchange
Why is restructure of mempool required with cluster mempool? (29:54)

DEFAULT_MAX_PEER_CONNECTIONS for Bitcoin Core is 125 or 130? (36:32)

Why do protocol developers work on maximizing miner revenue? (38:34)

Is there an economic incentive to use P2WSH over P2TR? (42:26)

How many blocks per second can sustainably be created using a time warp attack? (45:30)

pkh() nested in tr() is allowed? (49:01)

Can a block more than a week old be considered a valid chain tip? (51:25)

SIGHASH_ANYONECANPAY mediated tx modification (57:35)

Why does RBF rule #3 exist? (1:00:35)
Releases and release candidates
BDK 1.0.0-beta.1 (1:02:05)
Notable code and documentation changes
Bitcoin Core #30320 (1:02:58)

Bitcoin Core #29523 (1:07:42)

Core Lightning #7461 (1:10:03)

Eclair #2881 (1:11:06)
1 hr 14 min
July 23, 2024Bitcoin Optech: Newsletter #312 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick and Pieter Wuille to discuss ⁠Newsletter #312⁠.
News
Distributed key generation protocol for FROST (1:37)

Introduction to cluster linearization (28:45)
Changes to services and client software
ZEUS adds BOLT12 offers and BIP353 support (56:15)

Phoenix adds BOLT12 offers and BIP353 support (57:02)

Stack Wallet adds RBF and CPFP support (57:42)

BlueWallet adds silent payment send support (57:59)

BOLT12 Playground announced (59:10)

Moosig testing repository announced (59:56)

Real-time Stratum visualization tool released (1:01:01)

BMM 100 Mini Miner announced (1:01:57)

Coldcard publishes URL-based transaction broadcast specification (1:02:32)

Notable code and documentation changes
Bitcoin Core #26596 (1:09:38)

Core Lightning #7455 (1:11:27)

Eclair #2878 (1:11:58)

Rust Bitcoin #2646 (1:13:03)

BDK #1489 (1:13:55)

BIPs #1599 (1:15:22)

BOLTs #1173 (1:17:50)

BLIPs #25 (1:18:50)
1 hr 21 min
July 16, 2024Bitcoin Optech: Newsletter #311 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Vojtěch Strnad and Fabian Jahr to discuss Newsletter #311.

News (1:00)
Bitcoin Core PR Review Club
Testnet4 including PoW difficulty adjustment fix (15:14)
Releases and release candidates
Bitcoin Core 26.2 (37:23)

LND v0.18.2-beta (37:42)
Notable code and documentation changes
Rust Bitcoin #2949 (40:04)

BDK #1487 (41:20)
46 min