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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)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bastien Teinturier, Salvatore Ingala, and spacebear to discuss Newsletter #419. News ● Reorg vulnerability in LND channel closes (1:13) ● Draft BIP for `rawtr()` output script descriptor (1:14:36) Changes to services and client software ● Payjoin Dev Kit (rust-payjoin) 1.0.0 released (55:33) ● Silent Payments sender plugin for Electrum (1:21:41) ● Superscalar implementation announced (1:22:34) ● Cofund multisig wallet announced (1:24:57) ● Lexe adds human-readable addresses and LNURL-withdraw (1:25:55) ● Ledger Bitcoin app 2.5.0 adds human-readable policy descriptions (37:17) ● Bark 0.5.0 released (1:27:34) ● Bitcoin-PIR for private UTXO queries (1:28:16) ● OP_TEMPLATEHASH Ark demonstration (1:29:44) ● libshrincs formally verified hash-based signatures (1:34:00) Notable code and documentation changes ● Bitcoin Core #32784 (1:38:08) ● Bitcoin Core #35797 (1:40:45) ● Bitcoin Core #35531 (1:44:14) ● Bitcoin Core #35889 (1:48:44) ● Bitcoin Core #35605 (1:51:06) ● Eclair #3352 (12:15) ● Eclair #3351 (20:31) ● Eclair #3345 (23:16) ● LND #8754 (1:54:23) ● LND #11065 (1:55:47) ● HWI #842 (1:57:04)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Michael Ford (fanquake) and Martin Zumsande to discuss ⁠Newsletter #418⁠. News ● Message transfer failure (33:07) ● Static Bitcoin Core binaries available for testing (1:19) ● Replacing per-peer transaction rate-limiting with global rate limits (18:44) Releases and release candidates ● BTCPay Server 2.4.2 (43:16) ● LND v0.21.2-beta (45:45) ● LND v0.20.3-beta (45:45) Notable code and documentation changes ● Bitcoin Core #35493 (48:10) ● Core Lightning #9150 (50:57) ● BIPs #2248 (54:13) ● BIPs #2225 (56:07) ● Eclair #3346 (58:50) ● Eclair #3341 (1:02:22) ● LND #11019 (1:05:18) ● LND #11023 (1:09:03) ● Libsecp256k1 #1904 (1:11:49) ● HWI #839 (1:13:58)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Conduition, Ram, and Fabian Jahr to discuss Newsletter #417. News ● Draft BIP for stale tip relay (29:26) Changing consensus ● CISA for taproot keypath spends (BIP460) (40:38) ● Segwit commitment to post-quantum witness data (57:51) ● PQC output type discussion (1:45) ● Input-triggered transaction expiry (1:03:36) ● Layered quantum recovery of hashed addresses (21:53) ● Segregated Data (SegData) BIP draft (1:08:33) Releases and release candidates ● Libsecp256k1 0.8.0 (1:15:24) Notable code and documentation changes ● Bitcoin Core #35501 (1:18:10) ● Core Lightning #9298 (1:22:47) ● Core Lightning #9353 (1:25:02) ● Eclair #3336 (1:26:15) ● LND #10942 (1:27:53) ● LND #10992 (1:29:35) ● Rust Bitcoin #6364 (1:31:55) ● Rust Bitcoin #6642 (1:33:22) ● BTCPay Server #7491 (1:36:52) ● BTCPay Server #7488 (1:38:35)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Rob Hamilton, PortlandHODL, Chandra Pratap, and fabohax to discuss Newsletter #416. Action items ● Move funds secured by COLDCARD-generated keys (1:07) News ● Wallets generated by COLDCARD at risk of theft (2:18) ● Disclosure of two DoS vulnerabilities in Core Lightning (36:26) ● Proof of concept for a zero-knowledge proof of reserves (49:54) Selected Q&A from Bitcoin Stack Exchange ● What is Bitcoin's objective definition of transaction neutrality? (1:03:07) ● Why does BIP110's decentralization benefit not outweigh its impact on transaction neutrality? (1:05:17) ● Why does BIP110 require a 55% signaling threshold if its nodes reject non-signaling blocks? (1:09:46) ● Why use ElligatorSwift encoding in BIP324? (1:17:12) ● Was the OP_SUCCESSx reservation in BIP342 designed with specific opcode families in mind? (1:25:36) ● What is the difference between the long-term feerate and the discard feerate? (1:29:14) ● What is the quickest method for migrating a legacy wallet to a descriptor wallet on a pruned node? (1:32:40) ● Is there historical data on orphan/stale block rates during high-fee periods? (1:36:09) Releases and release candidates ● BTCPay Server 2.4.1 (1:41:25) ● Eclair 0.14.1 (1:42:14) Notable code and documentation changes ● Bitcoin Core #34628 (1:44:26) ● Bitcoin Core #28463 (1:49:49) ● Bitcoin Core #32800 (1:54:18) ● Bitcoin Core #34683 (1:56:54) ● Bitcoin Core #33014 (1:58:09) ● Eclair #3325 (1:59:31) ● BOLTs #1346 (2:00:57) ● BOLTs #1344 (2:01:01) ● BOLTs #1343 (2:04:14)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Fabian Jahr, Kruw, and Mojo to discuss ⁠Newsletter #415⁠. News ● Draft BIP for full aggregation of BIP340 signatures (1:32) Changes to services and client software ● Wasabi Wallet 2.8.0 released (33:11) ● Coinswap v0.2.2 released (46:08) ● Go secp256k1 library announced (1:08:38) ● ASMap dashboard announced (21:06) ● Wavelength alpha released (1:10:01) Releases and release candidates ● Core Lightning v26.06.6 (1:13:06) ● Bitcoin Inquisition 29.4 (1:16:03) Notable code and documentation changes ● Bitcoin Core #35215 (1:17:11) ● Bitcoin Core #35766 (1:21:16) ● BIPs #2075 (1:22:44) ● BIPs #2204 (1:25:46) ● Core Lightning #8935 (1:28:43) ● Core Lightning #9324 (1:33:14) ● libsecp256k1 #1765 (1:35:16) ● Rust Bitcoin #6317 (1:41:46) ● BTCPay Server #7457 (1:44:10) ● BLIPs #71 (1:46:24)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Keagan McClelland and Andrew Toth to discuss Newsletter #414. News ● Formal verification of the Bitcoin protocol (1:11) Releases and release candidates ● Bitcoin Core 30.3 (39:42) ● Bitcoin Core 29.4 (39:43) Notable code and documentation changes ● Bitcoin Core #35295 (52:43) ● Bitcoin Core #34897 (1:13:54) ● Bitcoin Core #35406 (1:16:13) ● Bitcoin Core #35380 (1:21:36) ● Bitcoin Core #35568 (1:07:36) ● Bitcoin Core #34538 (1:23:43) ● BIPs #2208 (1:25:52) ● LND #10962 (1:27:27) ● LND #10897 (1:30:12) ● BINANAs #21 (1:31:34)

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sjors Provoost to discuss Newsletter #413. News ● Using fountain codes for IBD (13:53) Releases and release candidates ● Bitcoin Core 31.1 (22:52) ● LND v0.20.2-beta (28:49) Notable code and documentation changes ● Bitcoin Core #32489 (31:11) ● Bitcoin Core #32606 (33:59) ● Bitcoin Core #34020 (0:48) ● Core Lightning #9104 (42:55) ● Eclair #3323 (45:11) ● LND #10832 (46:24)