We provide weekly newsletters, workshops, case studies, and research for the #Bitcoin community.

Joined June 2018
Erick Cestari (@iamflops) and Adam Gibson joined Optech 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)
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Bitcoin Optech newsletter #427 is here: - summarizes the disclosure of two denial-of-service vulnerabilities in older versions of Eclair - describes a proposed scheme for running complex multi-round contracts inside Lightning channels - Optech Newsletter #427 Podcast bitcoinops.org/en/newsletter…
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Adam Gibson posted to the Bitcoin-Dev mailing list about a proposal for protocol, called LN-GAP, to run complex, multi-round, two-party contracts inside a Lightning channel while settling disputes onchain in a constant number of transactions... bitcoinops.org/en/newsletter…
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Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.
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Clara Shikhelman (@ClaraShik) and Elias Rohrer (@_tnull) joined Optech 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)
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Bitcoin Optech newsletter #426 is here: - links to a draft BIP for letting peers choose their own one-byte message type IDs over the version 2 P2P transport - summarizes a discussion about whether BIPs should include their number in tagged hash tags - describes a proposed metaprotocol for private onchain transfers that requires no consensus changes - Optech Newsletter #426 Podcast
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Misha Komarov (@nemothenoone) posted to Delving Bitcoin about a proposal for a new metaprotocol built on top of Bitcoin, called Shielded Bitcoin, that would enable private transfers while requiring no changes in consensus... bitcoinops.org/en/newsletter…
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Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.
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Matt Morehouse joined Optech 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)
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Bitcoin Optech retweeted
Ahmet Kurt (@startimeahmet) and Jan B (@_jan__b) joined Optech 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)
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Bitcoin Optech newsletter #425 is here: - summarizes the responsible disclosure of two denial-of-service vulnerabilities affecting older versions of Eclair - describes a proposal for synchronizing wallet labels between devices through an untrusted store - recaps continued discussion of PQC output types - describes an approach to block-wide signature aggregation via SNARKs - summarizes bounds on chain length with BIP54 time warp fixes - links to research comparing covenant proposals for vaults - discusses the depots idea for probabilistic Lightning channels - Optech Newsletter #425 Podcast
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Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.
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