Bitcoin Optech Podcast Bitcoin Optech

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)

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)

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)

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)

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)

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)