Bitcoin Optech Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Pyth and Ademan to discuss Newsletter #408.

News

● A post-quantum path for BIP324 (37:15)

● Discussion of QR signing payloads for miniscript wallets (1:27)

Changing consensus

● CTV-only vault proof of concept (13:08)

● Post-quantum Lightning discussion (43:41)

● Quantum attack game theory (47:24)

● BIP54 64-byte transactions and potential legitimate uses (49:15)

Releases and release candidates

● Core Lightning 26.06 (1:11:15)

Notable code and documentation changes

● Bitcoin Core #35269 (1:15:42)

● Bitcoin Core #34644 (1:20:45)

● Bitcoin Core #34198 (1:22:21)

● LND #10813 (1:26:32)

● Rust Bitcoin #6250 (1:28:05)

● BOLTs #1338 (1:36:06)

● BOLTs #1326 (1:37:23)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Chandra Pratap to discuss Newsletter #407.

News

● Core Lightning assertion DoS disclosure (0:47)

● Bitcoin Core developer meeting transcripts (14:34)

Releases and release candidates

● Eclair v0.14.0 (20:30)

● Core Lightning 26.06rc2 (23:01)

Notable code and documentation changes

● Bitcoin Core #33966 (24:14)

● Bitcoin Core #34917 (28:04)

● Bitcoin Core #35017 (30:52)

● BIPs #1944 (35:25)

● BIPs #2108 (36:14)

● Eclair #3192 (39:28)

● LDK #4584 (40:28)

● LDK #4628 (41:27)

● LND #10552 (43:35)

● LND #10820 (48:52)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Oliver Gugger and 0xB10C to discuss Newsletter #406.

News

● Significant updates to BIP322 Generic Signed Message Format (1:17)

● TCP hole punching for Bitcoin nodes behind NATs (17:39)

Changes to services and client software

● Ibis Wallet announced (40:15)

● LDK Server announced (41:10)

● Mempool.space v3.3.0 released (42:06)

● peer-observer P2P monitoring tooling (32:28)

Notable code and documentation changes

● Bitcoin Core #29136 (43:27)

● Bitcoin Core #34893 (47:24)

● Bitcoin Core #34860 (48:20)

● Bitcoin Core #31298 (53:52)

● Bitcoin Core #28802 (57:04)

● Eclair #3298 (58:52)

● LDK #4575 (1:02:08)

● LND #10814 (1:03:13)

● Rust Bitcoin #6191 (1:04:35)

● BLIPs #42 (1:06:20)

Mark “Murch” Erhardt and Mike Schmidt are joined by Fabian Jahr to discuss ⁠Newsletter #405⁠.

News

● Bitcoin Core script interpreter remote crash disclosure (22:00)

● BIP proposal for UTXO set sharing over P2P network (0:42)

Releases and release candidates

● Core Lightning 26.06rc1 (34:58)

Notable code and documentation changes

● Bitcoin Core #35209 (36:44)

● BIPs #2116 (38:20)

● BIPs #2141 (44:13)

● Core Lightning #9116 (48:35)

● Core Lightning #9110 (50:27)

● LDK #4598 (52:10)

● LDK #4528 (53:30)

● LND #10612 (54:37)

● BTCPay Server #7354 (57:12)

● BDK #2195 (58:10)

● Bitcoin Inquisition #100 (1:00:00)

● BINANAs #20 (1:02:42)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Daniela Brozzoni, Naiyoma, and Thomas Voegtlin to discuss Newsletter #404.

News

● Possible solutions to node fingerprinting (1:14)

● Public fraud proof for just-in-time channels (19:21)

Notable code and documentation changes

● Bitcoin Core #33796 (37:11)

● Bitcoin Core #21283 (39:30)

● BIPs #2150 (45:30)

● Eclair #3144 (52:30)

● Eclair #2887 (54:00)

● LDK #4592 (55:27)

● LND #9153 (56:52)

● Rust Bitcoin #5835 (58:02)

● BOLTs #995 (58:56)

● BOLTs #1228 (1:01:40)

● BOLTs #1327 (1:03:28)

Gustavo Flores Echaiz and Brandon Black are joined by Olaoluwa Osuntokun to discuss Newsletter #403.

News

● Binary fuse filters as an alternative to BIP158's GCS (19:05)

Changing consensus

● Post-quantum HD wallets with fallback SPHINCS keys (31:07)

● Discussion of a post-quantum output type (34:42)

● Proposal to embed post-quantum keys in tapscript without consensus changes (38:03)

● BIP54 demonstration of slow blocks on signet (43:28)

● Post-quantum BIP86 recovery using zk-STARK proofs of BIP32 seeds (1:05)

Releases and release candidates

● Core Lightning 26.04.1 (48:16)

● BTCPay Server 2.3.8 (50:15)

● BTCPay Server 2.3.9 (51:52)

Notable code and documentation changes

● Bitcoin Core #33671 (52:39)

● Bitcoin Core #34885 (58:01)

● Bitcoin Core #33920 (59:57)

● Bitcoin Core #34911 (1:02:00)

● BIPs #1548 (1:04:47)

● HWI #831 (1:08:17)

● BDK #2188 (1:09:11)

● BDK #2115 (1:10:14)

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Toby Sharp to discuss Newsletter #402.

News

● Hornet Node's declarative executable specification of Bitcoin consensus rules (1:02)

● Onion message jamming in the Lightning Network (23:22)

Selected Q&A from Bitcoin Stack Exchange

● Why did BIP342 replace CHECKMULTISIG with a new opcode, instead of just removing FindAndDelete from it? (40:58)

● Does SIGHASH_ANYPREVOUT commit to the tapleaf hash or the full taproot merkle path? (43:28)

● What does the BIP86 tweak guarantee in a MuSig2 Lightning channel, beyond address format? (45:23)

Releases and release candidates

● Bitcoin Core 31.0 (47:10)

● Core Lightning 26.04 (54:26)

● LND 0.21.0-beta.rc1 (56:35)

Notable code and documentation changes

● Bitcoin Core #33477 (57:55)

● Bitcoin Core #35006 (1:02:21)

● BIPs #1895 (1:04:31)

● BIPs #2142 (1:12:47)

● LDK #4555 (1:14:28)

● LND #10713 (1:16:23)

● LND #10754 (1:18:14)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Remix7531 and Luis Schwab to discuss Newsletter #401.

News

● Discussion of using nested MuSig2 in the Lightning Network (34:05)

● Formal verification of secp256k1 modular scalar multiplication (01:10)

Changes to services and client software

● Coldcard 6.5.0 adds MuSig2 and miniscript (40:56)

● Frigate 1.4.0 released (41:46)

● Bitcoin Backbone updates (47:10)

● Utreexod 0.5 released (16:18)

● Floresta 0.9.0 released (19:41)

Releases and release candidates

● Bitcoin Core 31.0rc4 (48:01)

● Core Lightning 26.04rc3 (49:00)

Notable code and documentation changes

● Bitcoin Core #34401 (50:01)

● Bitcoin Core #35032 (51:51)

● Core Lightning #9021 (55:33)

● Core Lightning #9046 (56:53)

● LDK #4515 (58:25)

● LDK #4558 (59:51)

● LND #9985 (1:01:53)

● BTCPay Server #7250 (1:04:07)

● BIPs #2089 (1:07:28)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Julian Moik to discuss ⁠Newsletter #400⁠.

Bitcoin Core PR Review Club

● Testing Bitcoin Core 31.0 Release Candidates (29:00)

Notable code and documentation changes

● Bitcoin Core #33908 (31:56)

● Eclair #3283 (37:06)

● LDK #4529 (38:12)

● LDK #4494 (39:55)

● LND #10666 (45:31)

● BIPs #2099 (46:40)

● BIPs #2118 (1:15)

● BIPs #2134 (51:08)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Armin Sabouri, Pyth, Conduition, and Jonas Nick to discuss Newsletter #399.

News

● Wallet fingerprinting risks for payjoin privacy (44:15)

● Draft BIP for a wallet backup metadata format (1:04:26)

Changing consensus

● Compact Isogeny PQC can replace HD wallets, key-tweaking, silent payments (24:23)

● Varops budget and tapscript leaf 0xc2 (aka Script Restoration) are BIPs 440 and 441 (1:13:24)

● SHRIMPS: 2.5 KB post-quantum signatures across multiple stateful devices (02:02)

Releases and release candidates

● Bitcoin Core 31.0rc2 (1:22:07)

● Core Lightning 26.04rc2 (1:23:32)

● BTCPay Server 2.3.7 (1:24:04)

Notable code and documentation changes

● Bitcoin Core #32297 (1:26:29)

● Bitcoin Core #34379 (1:28:54)

● Eclair #3269 (1:30:37)

● LDK #4486 (1:32:59)

● LDK #4428 (1:35:00)

● LND #9982 (1:37:13)

● LND #10063 (1:39:00)