Tuesday July 6 2021 Meeting (#169)

* Added july 6 meeting doc

* Added Ivan to sync list

* Added longer-term meeting items

* Added a few topics

* Added meeting notes

meeting/meeting_july_6_2021.md

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+# July 6th (7 PM CST)/6th (9 AM JST) Meeting 2021
+
+## Individual Updates (Sync)
+
+* **#Query(Nadav)**
+  * Optimization
+  * non-equal num-digits
+* **#Query(Tibo)**
+  * Implementation stuff
+  * Ordering of outcomes
+* **#Query(Lloyd)**
+  * Implementation of oracle stuff
+  * Testing bitcoin-s implementation
+* **#Query(Chris)**
+  * Executing DLCs on bitcoin-s with lots of people
+* **#Query(Antoine)**
+  * Review on ...63
+* **#Query(Jesse)**
+  * Working on FROST
+    * Python done!
+    * Distributed key generation nearly done
+* **#Query(Matt)**
+  * Small improvements to JS impl
+  * Debugging atomic finance product
+  * DLC close soon
+* **#Query(Ben)**
+  * bitcoin-s wallet & GUI implementation
+  * Executing and testing DLCs on bitcoin-s
+* **#Query(Ivan!)**
+  * Learning about DLCs
+  * Bitcoin-s GUI work
+* **#Query(Dillion!)**
+  * Read DLC specs
+  * DLC validation in node-dlc
+* **#Query(all)**
+
+## Implementation Updates (Sync)
+
+* bitcoin-s
+  * All DLC logic in specs except
+    * Missing Signed outcomes
+    * Off-by-one support not yet there
+    * Open PRs for Disjoint Union and Hyperbola/general payout curves
+  * Optimized
+  * JS stuff nearly there
+* rust-dlc
+  * All DLC logic in specs
+  * Optimizations not finished
+  * Needs to update secp256k1-zkp version
+  * Serialization still up in air
+  * Integration tests with bitcoind
+  * Still needs a persistence layer and network layer
+  * **Development and Reviewers wanted!**
+  * Most development is in PRs
+* atomic finance
+  * node-dlc
+    * Logic for message serialization and structure
+    * Chain monitoring
+  * chainabstractionlayer-finance
+    * For building a wallet
+    * single-oralce support
+    * disjoint union support coming
+  * cfd-dlc is still currently the backend
+    * Added serial id support recently as it was needed
+* others?
+  * Binary outcome DLC implementation from Lloyd
+    * oracle: olivia
+    * wallet: bweet
+      * Binary tweet
+
+## Specification Writing
+
+**#Status_Update_Interrupt**
+
+* Multi-oracle support merged!
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/128
+* Hyperbola curve piece support merged!
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/144
+* If anyone is interested it would be nice to document loss-of-fund vectors
+  * https://github.com/discreetlogcontracts/dlcspecs/issues/132
+  * Being robust against random failures?
+    * **#Discussion**
+    * Nothing in specification about what should be backed up when before sending messages
+    * In LN they also have the channel-reestablish message
+* ECDSA Adaptor Signature Specification merged!
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/114
+* Draft Updating P2P message serialization to include sub-types, optional fields, tlv streams
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/163
+  * **#Discussion**
+    * Every tiny thing had a big type associated with it and this will simplify things and make them more clear and extensible, current LN is too restrictive
+    * Open call for review!
+  * Also adds protocol versioning to offer message
+    * Anyone have new thoughts on this?
+    * **#Discussion**
+* Mutual Close Message
+  * https://github.com/discreetlogcontracts/dlcspecs/issues/161
+  * Current protocol has no cooperative close
+    * Could send PSBT, but this isn't ideal
+  * This is for after a funding tx is confirmed
+    * CET locktime hasn't been reached
+  * Extra input to mutual close to avoid free option, and in the future we will introduce revocation mechanism
+* Multi-oracle support for oracles with different num_digits algorithm proposed
+  * https://github.com/discreetlogcontracts/dlcspecs/issues/168
+  * Feedback welcome
+  * Implementation coming soon
+* [bLIPs](https://lists.linuxfoundation.org/pipermail/lightning-dev/2021-June/003086.html)
+  * E.g. `premium_fee` for fee-bumping, TLV extensions, etc.
+  * **#Discussion**
+* P2P discussion (TOR?)
+  * **#Discussion**
+* Time to start thinking about Taproot!
+  * **#Discussion**
+* Path to Lightning
+  * **#Discussion**
+
+## Oracle Specifications
+
+**#Status_Update**
+
+* Oracle JSON format
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/150
+  * Thoughts on merging?
+    * Let's leave it a PR for now, its ongoing
+* Client-side oracle validation specification merged!
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/120
+* Breaking Oracle Changes for v0
+  * https://github.com/discreetlogcontracts/dlcspecs/pull/167
+  * Splits up oracle key into announcement and attestation key
+  * Adds `oracle_keys` message which is static and separate from announcements
+  * Adds nonce proof-of-knowledge signatures to announcements
+  * Adds option for ranged timestamps on oracle events
+
+## Oracle Attestation Research
+
+**#Status_Update**
+
+* **#Query(Lloyd)**
+  * paper: https://eprint.iacr.org/2021/350.pdf
+    * Compress s values in signatures with R values present
+    * This would fix our aggregation woes
+    * May be very inefficient (needs a multiplication for every CET)
+    * But actually, we already do at least two multiplications for every CET so maybe this is theoretically viable?
+      * Yes, this is actually viable (same asymptotic behavior)
+      * TODO: Get feature branch from Jonas to tinker with
+  * Any other stuff?
+