Bitcoin Optech Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Elias Rohrer, Greg Sanders, Antoine Poinsot, Oleksandr Kurbatov, and Nishant Bansal to discuss ⁠Newsletter #429⁠.News● Silent payments for multiparty wallets (41:18) ● CLN self-referential channel announcement DoS disclosure (52:57) ● Bitcoin Core security policy update (24:53) Selected Q&A from Bitcoin Stack Exchange● Why does Bitcoin use both a transaction ID and a witness transaction ID? (1:02:58) ● How to sign a MuSig with Bitcoin Core (1:07:54) ● What changed in Bitcoin P2P protocol version 70017 compared to 70016? (1:09:11) Releases and release candidates● Bitcoin Core 32.1 (35:56) ● Bitcoin Core 31.2 (39:18) ● Bitcoin Core 30.4 (40:42) ● Bitcoin Core 29.5 (40:53) ● Eclair 0.14.6 (1:12:37) ● LND v0.21.5-beta (1:13:36) Notable code and documentation changes● Bitcoin Core #36665 (3:43) ● Bitcoin Core #36667 (14:37) ● Bitcoin Core #36669 (19:02) ● BIPs #2130 (1:15:55) ● Core Lightning #9627 (1:17:33) ● Eclair #3417 (1:19:13) ● Eclair #3416 (1:26:02) ● LDK #5314 (1:28:48) ● LDK #5412 (1:31:27) ● LND #11164 (1:33:28) ● LND #11373 (1:36:17) ● BTCPay Server #7744 (1:38:59)

Gustavo Flores Echaiz and Brandon Black are joined by Adam Gibson, Vincenzo Palazzo, and João Dias to discuss Newsletter #428.News● Trust-minimized exits from a single-issuer layer 2 (1:32) ● Descriptor syntax for hash preimages (18:03) Changes to services and client software● Ibis Wallet v5.0-beta released (26:31) ● Landfall wallet for Lightning mining payouts (28:57) ● rbitcoin 0.8.0 released (38:44) Releases and release candidates● Eclair 0.14.4 (43:18) ● BDK chain 0.23.4 (45:37) ● LND v0.21.5-beta.rc1 (47:09) Notable code and documentation changes● Eclair #3409 (50:16) ● Eclair #3411 (52:20) ● LDK #5126 (55:03) ● LND #10919 (56:19) ● BTCPay Server #7679 (1:01:06) ● BTCPay Server #7684 (1:02:39) ● BDK #2325 (1:04:18) ● BOLTs #1357 (1:07:13) ● BOLTs #1352 (1:10:03)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Erick Cestari and Adam Gibson to discuss Newsletter #427.News● Disclosure of two DoS vulnerabilities fixed in Eclair v0.14.1 (0:53) ● Offchain contracts in Lightning channels (12:57) Releases and release candidates● Bitcoin Core 32.0rc4 (43:15) Notable code and documentation changes● Eclair #3396 (49:25) ● Eclair #3399 (53:23) ● Eclair #3395 (57:23) ● Eclair #3401 (59:09) ● LDK #5080 (1:01:03) ● LDK #5087 (1:02:46) ● LND #11068 (1:05:04) ● Rust Bitcoin #6956 (1:07:44) ● BDK #2319 (1:10:22)

Gustavo Flores Echaiz is joined by Clara Shikhelman and Elias Rohrer to discuss ⁠Newsletter #426⁠.News● Dynamic one-byte message type IDs for BIP324 (45:02) ● Discussion of conventions for tagged hash tags in BIPs (49:04) ● Proposal for onchain, private bitcoin transfers with no consensus changes (1:15) Releases and release candidates● Bitcoin Core 32.0rc3 (53:34) ● Core Lightning 26.06.9 (54:38) ● LDK v0.3-rc3 (23:38) ● LDK v0.2.7 (24:33) ● BTCPay Server 2.4.5 (56:55) Notable code and documentation changes● Bitcoin Core #36277 (59:51) ● Bitcoin Core #36365 (1:05:09) ● Bitcoin Core #36338 (1:07:53) ● Bitcoin Core #32895 (1:10:38) ● Core Lightning #9582 (1:12:38) ● Eclair #3390 (1:18:03) ● LDK #5057 (33:00) ● LDK #5042 (35:55) ● LDK #5046 (38:25) ● LDK #5028 (41:43) ● LND #11290 (1:20:41)

Gustavo Flores Echaiz and Brandon Black are joined by Matt Morehouse to discuss ⁠Newsletter #425⁠.News● Disclosure of two DoS vulnerabilities in Eclair (1:01) ● Proposal for wallet label synchronization (15:25) Changing consensus● Continued discussion of PQC output types (21:36) ● Block-wide signature aggregation via SNARKs (27:17) ● Bounds on chain length with BIP54 time warp fixes (35:19) ● Comparing covenant proposals for vaults (39:23) ● Depots for probabilistic Lightning channels (43:18) Releases and release candidates● LND v0.21.4-beta.rc1 (48:40) ● LND v0.20.5-beta.rc1 (50:29) Notable code and documentation changes● Bitcoin Core #29278 (51:55) ● Bitcoin Core #35984 (53:43) ● Bitcoin Core #35301 (56:45) ● Bitcoin Core #36312 (58:51) ● Bitcoin Core #36284 (1:01:59) ● Bitcoin Core #35752 (1:07:47) ● Bitcoin Core #35813 (1:11:46) ● BIPs #2276 (1:13:07) ● LDK #4993 (1:16:39) ● LND #11173 (1:19:40) ● LND #11190 (1:22:12) ● LND #11212 (1:27:37) ● LND #11258 (1:29:58)

Gustavo Flores Echaiz and Mike Schmidt are joined by Ahmet Kurt and Jan B to discuss Newsletter #424.News● Proposal for a post-quantum Lightning Network (1:10) Selected Q&A from Bitcoin Stack Exchange● What would be a drawback if sum instead of SHA256 of amounts was used in the taproot signature message? (36:18) ● Post-BIP110 fork is it necessary to resync from block 0? (39:32) ● Can a Bitcoin node build a partial UTXO set from only the most recent blocks and use it to validate new transactions? (42:16) Releases and release candidates● Bitcoin Core 32.0rc2 (21:13) ● Core Lightning 26.06.8 (45:36) ● LDK v0.3-rc2 (47:15) Notable code and documentation changes● Bitcoin Core #34566 (51:31) ● BIPs #1951 (54:14) ● BIPs #2224 (57:45) ● Core Lightning #9507 (1:02:00) ● Core Lightning #9508 (1:07:35) ● Core Lightning #9509 (1:12:02) ● Core Lightning #9510 (1:16:03) ● Core Lightning #9513 (1:20:01) ● LND #11198 (1:21:47) ● LND #11146 (1:24:15) ● LND #11132 (1:27:20)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Davidson Souza, Eric Price, and PortlandHODL to discuss ⁠Newsletter #423⁠.News● Vardiff controllers that strand slowing miners (23:06) ● Improvements in Utreexo initial block download (1:18) ● New BIP draft for unspendable internal keys (1:17:51) Changes to services and client software● BitBoxApp adds Spark-based Lightning payments (1:24:09) ● Covenants.diy script editor (1:28:40) ● EntropyLab offline key calculator (59:46) Releases and release candidates● Eclair 0.14.3 (1:31:10) Notable code and documentation changes● Bitcoin Core #35445 (1:33:34) ● Bitcoin Core #36076 (1:38:51) ● Bitcoin Core #36150 (1:42:18) ● Bitcoin Core #36174 (1:44:37) ● Bitcoin Core #34743 (1:46:13) ● Bitcoin Core #36081 (1:48:07) ● Bitcoin Core #35975 (1:48:59) ● BIPs #2241 (1:50:04) ● BIPs #2258 (1:53:09) ● Eclair #3380 (1:56:33) ● Eclair #3376 (1:57:37) ● Eclair #3372 (2:04:34) ● LND #11163 (2:05:57) ● BDK #2246 (2:07:44)

Mark “Murch” Erhardt and Mike Schmidt are joined by Adam Gibson and Rob Segers to discuss Newsletter #422.News● A protocol for probabilistic coinjoin and covert betting (1:14) ● Update on silent payments light clients (43:26) Releases and release candidates● LDK v0.3-rc1 (1:04:06) ● LDK v0.2.6 (1:05:58) ● BTCPay Server 2.4.4 (1:07:44) Notable code and documentation changes● Bitcoin Core #35949 (1:13:04) ● Bitcoin Core #34931 (1:15:11) ● Bitcoin Core #36048 (1:18:14) ● Bitcoin Core #36123 (1:21:12) ● Bitcoin Core #36176 (1:22:32) ● Core Lightning #9434 (1:24:49) ● LND #11061 (1:26:29) ● LND #11125 (1:27:23) ● LND #11064 (1:28:33) ● BTCPay Server #7561 (1:29:31) ● BTCPay Server #7559 (1:31:03)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by average_gary, Erick Cestari, Conduition, and Greg Sanders to discuss Newsletter #421.News● Using silent payments for miner payouts in coinbase transaction (2:19) ● Responsible disclosure of a denial-of-service vulnerability in CLN (27:42) Changing consensus● Continued discussion of PQC output types (54:03) ● DropKick commit/reveal PQC rescue (1:14:08) ● SHRINCS draft BIP (1:35:48) ● BIP448 and CSFS/CTV demos and applications (37:55) Releases and release candidates● Core Lightning 26.06.7 (1:51:35) ● LND v0.21.3-beta (1:55:32) ● LND v0.20.4-beta (1:55:37) Notable code and documentation changes● Bitcoin Core #36111 (1:58:21) ● Bitcoin Core #36032 (2:01:17) ● Core Lightning #9435 (2:04:52) ● Eclair #3368 (2:08:10) ● Eclair #3366 (2:10:54) ● LND #11090 (2:14:55) ● LND #11140 (2:20:33) ● HWI #792 (2:23:55) ● BDK #2262 (2:25:48)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Níckolas Goline, Optout, Abubakar Sadiq Ismail, and Moonsettler to discuss Newsletter #420.Action items● Prepare for an upcoming Core Lightning security release (1:46) News● Discussion on universal opt-in replay protection (53:54) ● HWI repository to enter maintenance mode (1:24:05) ● Request for comments on using block-range filters (19:06) Releases and release candidates● BTCPay Server 2.4.3 (1:28:31) ● Eclair 0.14.2 (1:29:09) Notable code and documentation changes● Bitcoin Core #34075 (31:21) ● Bitcoin Core #35730 (1:32:02) ● Bitcoin Core #35580 (1:34:03) ● Bitcoin Core #35665 (1:38:36) ● Bitcoin Core #35933 (1:43:02) ● Core Lightning #9374 (1:45:58) ● Eclair #3342 (1:47:15) ● Eclair #3321 (1:48:55) ● LND #11008 (1:50:44) ● HWI #841 (1:52:09) ● HWI #849 (1:53:48) ● Rust Bitcoin #6755 (1:55:12)