Bitcoin Optech Podcast

By Bitcoin OptechNews Tech News

Bitcoin Optech Podcast episodes

July 27, 2023Bitcoin Optech: Newsletter #261 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Greg Sanders and Bastien Teinturier to discuss Newsletter #261.

News
Simplified LN closing protocol (1:03)

LN Summit notes (10:48)
Selected Q&A from Bitcoin Stack Exchange
How can I manually (on paper) calculate a Bitcoin public key from a private key? (57:18)

Why are there 17 native segwit versions? (59:43)

Does `0 OP_CSV` force the spending transaction to signal BIP125 replaceability? (1:03:04)

How do route hints affect pathfinding? (1:08:23)

What does it mean that the security of 256-bit ECDSA, and therefore Bitcoin keys, is 128 bits? (1:12:26)
Releases and release candidates
HWI 2.3.0 (1:15:09)

LDK 0.0.116 (1:16:37)
Notable code and documentation changes
Bitcoin Core GUI #740 (1:17:18)
1 hr 20 min
July 20, 2023Bitcoin Optech: Newsletter #260 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Rearden Code, Ken Sedgwick, and Jack Ronaldi to discuss Newsletter #260.

Waiting for confirmation #10: Get Involved (2:01)
Changes to services and client software
Wallet 10101 beta testing pooling funds between LN and DLCs (14:56)

LDK Node announced (17:14)

Payjoin SDK announced (20:09)

Validating Lightning Signer (VLS) beta announced (25:27)

BitGo adds MuSig2 support (37:42)

Peach adds RBF support (44:34)

Phoenix wallet adds splicing support (46:34)

Mining Development Kit call for feedback (49:27)

Binance adds Lightning support (51:33)

Nunchuk adds CPFP support (53:35)
Notable code and documentation changes
Bitcoin Core #27411 (54:57)

Core Lightning #6347 (58:07)

Core Lightning #6035 (1:00:47)

LND #7768 (1:02:28)

Libsecp256k1 #1313 (1:05:33)
1 hr 9 min
July 13, 2023Bitcoin Optech: Newsletter #259 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Bastien Teinturier, and Martin Zumsande to discuss Newsletter #259.

News
LN specification clean up proposed (0:58)
Waiting for confirmation #9: Policy Proposals (18:59)
Bitcoin Core PR Review Club
Stop relaying non-mempool txs (41:42)
Releases and release candidates
LND v0.16.4-beta (50:43)
Notable code and documentation changes
Bitcoin Core #27869 (51:48)
59 min
July 06, 2023Bitcoin Optech: Newsletter #258 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao to discuss Newsletter #258.

Waiting for confirmation #8: Policy as an Interface (0:30)
Releases and release candidates
Core Lightning 23.05.2 (10:27)
Notable code and documentation changes
Bitcoin Core #24914 (22:03)

Bitcoin Core #27896 (24:47)

Core Lightning #6334 (27:51)

BIPs #1452 (31:08)

BIPs #1354 (33:55)
38 min
June 29, 2023Bitcoin Optech: Newsletter #257 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Robin Linus, Dave Harding, and Pavlenex to discuss Newsletter #257.

News
Preventing coinjoin pinning with v3 transaction relay (16:08)

Speculatively using hoped-for consensus changes (1:33)
Waiting for confirmation #7: Network Resources (24:46)
Selected Q&A from Bitcoin Stack Exchange
Why do Bitcoin nodes accept blocks that have so many excluded transactions? (57:38)

Why does everyone say that soft forks restrict the existing ruleset? (1:05:28)

Why is the default LN channel limit set to 16777215 sats? (1:07:47)

Why does Bitcoin Core use ancestor score instead of just ancestor fee rate to select transactions? (1:10:28)

How does Lightning multipart payments (MPP) protocol define the amounts per part? (1:14:15)
Releases and release candidates
BTCPay Server 1.10.3 (1:16:08)
Notable code and documentation changes
Core Lightning #6303 (1:21:14)

Eclair #2701 (1:22:21)

Eclair #2696 (1:25:03)

LND #7710 (1:26:51)

LDK #2368 (1:27:43)

LDK #2367 (1:33:34)

LDK #2319 (1:34:40)

LDK #2120 (1:37:09)

LDK #2089 (1:38:12)

LDK #2077 (1:39:08)

Libsecp256k1 #1129 (1:40:37)
1 hr 48 min
June 22, 2023Bitcoin Optech: Newsletter #256 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Thomas Voegtlin to discuss Newsletter #256.

News
Proposal to extend BOLT11 invoices to request two payments (1:00)
Waiting for confirmation #6: Policy Consistency (19:25)
Changes to services and client software
Greenlight libraries open sourced (32:01)

Tapscript debugger Tapsim (33:25)

Bitcoin Keeper 1.0.4 announced (35:09)

Lightning wallet EttaWallet announced (35:47)

zkSNARK-based block header sync PoC announced (37:09)

lnprototest v0.0.4 released (39:45)
Releases and release candidates
Eclair v0.9.0 (41:24)
Notable code and documentation changes
LDK #2294 (44:33)

LDK #2156 (46:57)
50 min
June 15, 2023Bitcoin Optech: Newsletter #255 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Ruben Somsen, Josie Baker, Matthew Zipkin, and Joost Jager to discuss Newsletter #255.

News
Discussion about the taproot annex (1:32)

Draft BIP for silent payments (22:17)
Waiting for confirmation #5: Policy for Protection of Node Resources (41:48)
Bitcoin Core PR Review Club
Allow inbound whitebind connections to more aggressively evict peers when slots are full (53:38)
Releases and release candidates
Core Lightning 23.05.1 (1:07:01)
Notable code and documentation changes
Bitcoin Core #27501 (1:07:41)

Core Lightning #6243 (1:11:40)

Eclair #2677 (1:12:46)

Rust bitcoin #1890 (1:15:56)
1 hr 19 min
June 08, 2023Bitcoin Optech: Newsletter #254 Recap
Dave Harding and Mike Schmidt are joined by Gloria Zhao, Johan Torås Halseth, and Salvatore Ingala to discuss Newsletter #254.

News
Using MATT to replicate CTV and manage joinpools (1:23)
Waiting for confirmation #4: Feerate estimation (24:23)
Releases and release candidates
LND 0.16.3-beta (40:37)
Notable code and documentation changes
Bitcoin Core #26485 (42:34)

Eclair #2642 (44:40)

LND #7645 (46:11)

LND #7726 (48:25)

LDK #2293 (51:04)
56 min
June 01, 2023Bitcoin Optech: Newsletter #253 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Burak Keceli, Dave Harding, and Joost Jager to discuss Newsletter #253.

News
Proposal for a managed joinpool protocol (1:46)

Transaction relay over Nostr (40:38)
Waiting for confirmation #3: Bidding for block space (1:00:02)
Selected Q&A from Bitcoin Stack Exchange
Testing pruning logic with bitcoind (1:12:38)

What's the governing motivation for the descendent size limit? (1:13:19)

How does it contribute to the Bitcoin network when I run a node with a bigger than default mempool? (1:16:48)

What is the maximum number of inputs/outputs a transaction can have? (1:21:18)

Can 2-of-3 multisig funds be recovered without one of the xpubs? (1:23:50)
Releases and release candidates
Bitcoin Core 25.0 (1:27:05)
Notable code and documentation changes
Bitcoin Core #27469 (1:30:27)

Bitcoin Core #27626 (1:32:40)

Bitcoin Core #25796 (1:35:24)

Eclair #2668 (1:37:17)

Eclair #2666 (1:39:20)

BTCPay Server 97e7e (1:41:56)

BIPs #1446 (1:43:15)
1 hr 47 min
May 25, 2023Bitcoin Optech: Newsletter #252 Recap
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Robin Linus, and Lukas George to discuss Newsletter #252.

News
State compression with zero-knowledge validity proofs (1:05)
Waiting for confirmation #2: Incentives (19:00)
Changes to services and client software
Passport firmware 2.1.1 released (37:19)

MuSig wallet Munstr released (37:40)

CLN plugin manager Coffee released (38:49)

Electrum 4.4.3 released (40:01)

Trezor Suite adds coinjoin support (40:32)

Lightning Loop defaults to MuSig2 (41:18)

Mutinynet announces new signet for testing (42:40)

Nunchuk adds coin control, BIP329 support (44:55)

MyCitadel Wallet adds enhanced miniscript support (45:22)

Edge Firmware for Coldcard announced (47:08)
Releases and release candidates
Core Lightning 23.05 (49:54)

Bitcoin Core 23.2 (52:20)

Bitcoin Core 24.1 (52:20)

Bitcoin Core 25.0rc2 (54:06)
Notable code and documentation changes
Bitcoin Core #27021 (56:48)

LND #7668 (59:37)

LDK #2204 (1:00:50)

LDK #1841 (1:02:12)

BIPs #1412 (1:03:35)
1 hr 6 min