Bitcoin Optech Podcast

By Bitcoin OptechNews Tech News

Bitcoin Optech Podcast episodes

July 09, 2024Bitcoin Optech: Newsletter #310 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Poinsot and Elle Mouton to discuss ⁠Newsletter #310⁠.
News
Disclosure of vulnerabilities affecting Bitcoin Core versions before 0.21.0 (0:59)

Adding a BOLT11 invoice field for blinded paths (22:17)
Releases and release candidates
Bitcoin Core 26.2rc1 (36:43)
Notable code and documentation changes
Bitcoin Core #28167 (37:48)

Bitcoin Core #30007 (39:07)

Bitcoin Core #30200 (40:37)

Core Lightning #7342 (41:33)

LND #8796 (42:55)

LDK #3125 (45:26)

BIPs #1610 (46:21)

BIPs #1540 (49:07)
54 min
July 02, 2024Bitcoin Optech: Newsletter #309 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by René Pickhardt to discuss ⁠Newsletter #309⁠.
News
Estimating the likelihood that an LN payment is feasible (1:04)
Selected Q&A from Bitcoin Stack Exchange
How is the progress of Initial Block Download (IBD) calculated? (31:25)

What is `progress increase per hour` during synchronization? (33:50)

Should an even Y coordinate be enforced after every key-tweak operation, or only at the end? (34:45)

Signet mobile phone wallets? (37:28)

What block had the most transaction fees? Why? (39:01)

bitcoin-cli listtransactions fee amount is way off, why? (41:48)

Did uncompressed public keys use the `04` prefix before compressed public keys were used? (44:57)

What happens if an HTLC's value is below the dust limit? (46:34)

How does subtractfeefrom work? (47:11)

What's the difference between the 3 index directories blocks/index/, bitcoin/indexes and chainstate? (51:19)
Releases and release candidates
LND v0.18.1-beta (52:18)

Bitcoin Core 26.2rc1 (53:02)
Notable code and documentation changes
Bitcoin Core #29575 (53:29)

Bitcoin Core #28984 (56:38)

Core Lightning #7388 (1:00:28)

LND #8734 (1:03:24)

LDK #3127 (1:03:59)

Rust Bitcoin #2794 (1:05:39)

BDK #1395 (1:07:05)

BIPs #1620 (1:08:55)

BOLTs #869 (1:11:57)
1 hr 19 min
June 25, 2024Bitcoin Optech: Newsletter #308 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Jameson Lopp and Valentine Wallace to discuss ⁠Newsletter #308⁠.
News
Disclosure of vulnerability affecting old versions of LND (0:54)

Continued discussion of PSBTs for silent payments (7:32)
Changes to services and client software
Casa adds descriptor support (10:55)

Specter-DIY v1.9.0 released (40:52)

Constant-time analysis tool cargo-checkct announced (41:26)

Jade adds miniscript support (43:15)

Ark implementation announced (45:32)

Volt Wallet beta announced (46:42)

Joinstr adds electrum support (47:20)

Bitkit v1.0.1 released (47:50)

Civkit alpha announced (48:20)
Releases and release candidates
Bitcoin Core 26.2rc1 (49:01)
Notable code and documentation changes
Bitcoin Core #29325 (50:11)

Eclair #2867 (52:04)

LND #8730 (52:33)

LDK #3098 (28:14)

LDK #3078 (32:35)

LDK #3082 (33:53)

LDK #3103 (35:18)

LDK #3037 (38:07)
55 min
June 19, 2024Bitcoin Optech: Newsletter #307 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Hunter Beast and TheCharlatan to discuss Newsletter #307.
52 min
June 11, 2024Bitcoin Optech: Newsletter #306 Recap
Mark “Murch” Erhardt and Dave Harding are joined by Fabian Jahr, Anthony Towns, and Matt Corallo to discuss Newsletter #306.

News
Upcoming disclosure of vulnerabilities affecting old versions of Bitcoin Core (1:02)

BIP and experimental implementation of testnet4 (10:17)

Functional encryption covenants (24:58)

Updates to proposed soft fork for 64-bit arithmetic (31:27)

`OP_CAT` script to validate proof of work (33:32)

Proposed update to BIP21 (42:12)
Releases and release candidates
Core Lightning 24.05rc2 (54:53)

Bitcoin Core 27.1rc1 (55:51)
Notable code and documentation changes
Core Lightning #7252 (56:50)

LDK #2931 (1:02:19)

Rust Bitcoin #2644 (1:04:11)

BIPs #1541 (1:05:19)

BIPs #1556 (1:07:34)

BLIPs #32 (1:09:28)
1 hr 18 min
June 04, 2024Bitcoin Optech: Newsletter #305 Recap
Mark “Murch” Erhardt and Dave Harding are joined by Setor Blagogee, Oghenovo Usiwoma, Pierre Rochard, and Alex Bosworth to discuss Newsletter #305.
News
Light client protocol for silent payments (1:52)

Raw taproot descriptors (14:56)

Should overlapping soft fork proposals be considered mutually exclusive? (28:02)
Selected Q&A from Bitcoin Stack Exchange
What's the smallest possible coinbase transaction / block size? (1:13:32)

Understanding Script's number encoding, CScriptNum (1:14:18)

Is there a way to make a BTC wallet address public but hide how many BTC it contains? (1:16:04)

Testing increased feerates in regtest (1:18:05)

Why is my P2P_V2 peer connected over a v1 connection? (1:20:41)

Does a P2PKH transaction send to the hash of the uncompressed key or the compressed key? (1:21:58)

What are different ways to broadcast a block to the Bitcoin network? (1:23:20)
Releases and release candidates
LND v0.18.0-beta (43:23)

Core Lightning 24.05rc2 (1:12:21)
Notable code and documentation changes
Bitcoin Core #29612 (1:27:11)

Bitcoin Core #27064 (1:29:59)

Bitcoin Core #29873 (1:30:55)

Bitcoin Core #30062 (1:34:15)

Bitcoin Core #26606 (1:38:17)

BOLTs #1092 (1:41:41)
1 hr 46 min
May 27, 2024Bitcoin Optech: Newsletter #304 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth, Antoine Poinsot, and Tony Klausing to discuss ⁠Newsletter #304⁠.
News
Upgrading existing LN channels (1:27)

Challenges in rewarding pool miners (6:58)

Spending previously received SP outputs (12:40)

Proposed miniscript BIP (21:32)

Channel value pegging (31:42)
Changes to services and client software
Silent payment resources (43:50)

Cake Wallet adds silent payments (46:14)

Coordinator-less coinjoin PoC (46:26)

OCEAN adds BOLT12 support (47:10)

Coinbase adds Lightning support (48:57)

Bitcoin escrow tooling announced (49:20)

Block's call for mining community feedback (49:48)

Sentrum wallet tracker released (50:34)

Stack Wallet adds FROST support (51:19)

Transaction broadcast tool announced (53:41)
Releases and release candidates
Bitcoin Inquisition 27.0 (56:30)

LND v0.18.0-beta.rc2 (1:00:10)
Notable code and documentation changes
Bitcoin Core #27101 (1:00:30)

Bitcoin Core #30000 (1:01:27)

Bitcoin Core #28233 (1:02:42)

Core Lightning #7304 (1:09:41)

Core Lightning #7063 (1:10:18)

Rust Bitcoin #2740 (1:17:54)
1 hr 24 min
May 21, 2024Bitcoin Optech: Newsletter #303 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Adam Gibson to discuss ⁠Newsletter #303⁠.
News
Anonymous usage tokens (1:58)

BIP39 seed phrase splitting (31:48)

Alternative to BitVM (38:05)

Continued discussion about updating BIP2 (40:41)
Releases and release candidates
LND v0.18.0-beta.rc2 (44:25)
Notable code and documentation changes
Core Lightning #7190 (44:51)

LDK #2973 (46:18)

LDK #2907 (48:21)

BDK #1403 (48:59)

BIPs #1458 (50:57)
56 min
May 16, 2024Bitcoin Optech: Newsletter #302 Recap
Mark “Murch” Erhardt and Dave Harding are joined by Calvin Kim to discuss ⁠Newsletter #302⁠.
News
Release of utreexod beta (0:56)

BIP119 extensions for smaller hashes and arbitrary data commitments (20:15)
Releases and release candidates
LDK v0.0.123 (25:16)

LND v0.18.0-beta.rc2 (26:08)
Notable code and documentation changes
Bitcoin Core #29845 (28:16)

Core Lightning #7111 (29:34)

Libsecp256k1 #1518 (32:04)

Rust Bitcoin #2707 (34:30)

BIPs #1389 (37:29)

BIPs #1567 (42:21)

BIPs #1525 (44:08)
48 min
May 09, 2024Bitcoin Optech: Newsletter #301 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Ethan Heilman and Gloria Zhao to discuss ⁠Newsletter #301⁠.
News
Consensus-enforced lamport signatures on top of ECDSA signatures (1:00)
Bitcoin Core PR Review Club
Index TxOrphanage by wtxid, allow entries with same txid (31:04)
Releases and release candidates
Libsecp256k1 v0.5.0 (51:15)

LND v0.18.0-beta.rc1 (52:12)
Notable code and documentation changes
Bitcoin Core #28970 (26:33)

Bitcoin Core #28016 (53:05)

Bitcoin Core #29623 (57:00)
1 hr 1 min