{
  "founder": "achow101",
  "channel": "#bitcoin-core-dev",
  "network": "libera",
  "id": "bc16bfb6c6024d998753c92c1b2342f0",
  "name": "#bitcoin-core-dev",
  "chair": "achow101",
  "chairs": [
    "achow101"
  ],
  "nicks": {
    "achow101": 30,
    "core-meetingbot": 6,
    "vasild": 2,
    "stickies-v": 2,
    "pinheadmz": 5,
    "glozow": 2,
    "instagibbs": 6,
    "josie": 1,
    "sdaftuar": 1,
    "theStack": 5,
    "dergoegge": 2,
    "furszy": 2,
    "hebasto": 1,
    "_aj_": 7,
    "gleb": 1,
    "fjahr": 22,
    "darosior": 1,
    "TheCharlatan": 2,
    "abubakarsadiq": 1,
    "kanzure": 1,
    "fanquake": 1,
    "b10c": 1,
    "sipa": 23,
    "ryanofsky": 2,
    "gribble": 7,
    "MacroFake": 4,
    "bitcoin-git": 4
  },
  "start_time": "2023-10-19T14:00:25+00:00",
  "end_time": "2023-10-19T14:52:30+00:00",
  "active": false,
  "original_topic": "Bitcoin Core development discussion and commit log | Feel free to watch, but please take commentary and usage questions to #bitcoin | Channel logs: http://www.erisian.com.au/bitcoin-core-dev/, http://gnusha.org/bitcoin-core-dev/ | Weekly Meeting Thursday @ 14:00 UTC | Meeting topics http://gnusha.org/bitcoin-core-dev/proposedmeetingtopics.txt",
  "current_topic": "Fix for hash_serialized2 calculation and implications (for context see #28675 and #28685) (fjahr)",
  "messages": [
    {
      "id": "e0fb8fa3e06747e1b252ff04b2de4569",
      "sender": "achow101",
      "payload": "#startmeeting",
      "action": false,
      "timestamp": "2023-10-19T14:00:25+00:00"
    },
    {
      "id": "512ce453c8724b07a77d6cac28979482",
      "sender": "core-meetingbot",
      "payload": "Meeting started Thu Oct 19 14:00:25 2023 UTC.  The chair is achow101. Information about MeetBot at https://bitcoin.jonasschnelli.ch/ircmeetings.",
      "action": false,
      "timestamp": "2023-10-19T14:00:25+00:00"
    },
    {
      "id": "8a83aa4aaa6444819af14c849162b426",
      "sender": "core-meetingbot",
      "payload": "Available commands: action commands idea info link nick",
      "action": false,
      "timestamp": "2023-10-19T14:00:25+00:00"
    },
    {
      "id": "7a14cb2b978545848589e871f7abd3ec",
      "sender": "achow101",
      "payload": "#bitcoin-core-dev Meeting: achow101 _aj_ amiti ariard aureleoules b10c BlueMatt brunoerg cfields darosior dergoegge dongcarl fanquake fjahr furszy gleb glozow hebasto instagibbs jamesob jarolrod jonatack josibake kallewoof kanzure kouloumos kvaciral laanwj LarryRuane lightlike luke-jr MacroFake Murch phantomcircuit pinheadmz promag provoostenator ryanofsky sdaftuar S3RK stickies-v sipa theStack TheCharlatan vasild",
      "action": false,
      "timestamp": "2023-10-19T14:00:30+00:00"
    },
    {
      "id": "e9a99b582fac406f8e00fa901f971e3a",
      "sender": "vasild",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:41+00:00"
    },
    {
      "id": "bd77125a34e34313b6836d107754fce7",
      "sender": "stickies-v",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:43+00:00"
    },
    {
      "id": "13a930addd8443aea799bb2b53aa3435",
      "sender": "pinheadmz",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:45+00:00"
    },
    {
      "id": "907e1d3b74e74e8abc38560f64a267b5",
      "sender": "glozow",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:47+00:00"
    },
    {
      "id": "34b8f6fefac145abaaa27bc629559977",
      "sender": "instagibbs",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:47+00:00"
    },
    {
      "id": "99c7af95bcac4ea782b3a7303aaed476",
      "sender": "josie",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:51+00:00"
    },
    {
      "id": "7c7a94c25e914b58a4912370f160a8d1",
      "sender": "sdaftuar",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:55+00:00"
    },
    {
      "id": "f498b37653e8459b8332df7a6fa02904",
      "sender": "theStack",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:56+00:00"
    },
    {
      "id": "32ac7849e8374a2888be8d28c9d94854",
      "sender": "dergoegge",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:58+00:00"
    },
    {
      "id": "ae465f3f8df74b27b053a78f955375ee",
      "sender": "furszy",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:00:58+00:00"
    },
    {
      "id": "b0c85b8899f24d83ba8148c396b3ea3b",
      "sender": "hebasto",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:01:04+00:00"
    },
    {
      "id": "9d39e7431245421b8483e1a0948c0f5a",
      "sender": "_aj_",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:01:04+00:00"
    },
    {
      "id": "10e36f14d2f94565ba2895bfbdafb63f",
      "sender": "achow101",
      "payload": "There is 1 pre-proposed meeting topic this week. any last minute ones to add to the list?",
      "action": false,
      "timestamp": "2023-10-19T14:01:05+00:00"
    },
    {
      "id": "1cbd0a5fe9f4432b8225cbe449dde93a",
      "sender": "gleb",
      "payload": "Hi. Poor internet here",
      "action": false,
      "timestamp": "2023-10-19T14:01:07+00:00"
    },
    {
      "id": "9ab988f913344289a35b940e1fd74c9f",
      "sender": "fjahr",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:01:18+00:00"
    },
    {
      "id": "4db92a628fb44235a648859d8d9c0656",
      "sender": "darosior",
      "payload": "Good day",
      "action": false,
      "timestamp": "2023-10-19T14:01:26+00:00"
    },
    {
      "id": "86a84914db53416ea53476fe1b2ee559",
      "sender": "achow101",
      "payload": "#topic priority projects",
      "action": false,
      "timestamp": "2023-10-19T14:01:51+00:00"
    },
    {
      "id": "f9bffa295db84dc6a5c15403cef0eabf",
      "sender": "core-meetingbot",
      "payload": "topic: priority projects",
      "action": false,
      "timestamp": "2023-10-19T14:01:51+00:00"
    },
    {
      "id": "f4b839453e0f443583fcf733c13026ec",
      "sender": "TheCharlatan",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:02:19+00:00"
    },
    {
      "id": "e06f71fc45694b0a9f8d724e461e1efa",
      "sender": "abubakarsadiq",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:02:27+00:00"
    },
    {
      "id": "33eeb891c4fc44e390e02b52375c2947",
      "sender": "achow101",
      "payload": "The final count for the voting is Package relay - 19, Silent payments - 11, Multiprocess - 9, Legacy wallet removal - 9, cmake - 8, erlay - 7 stratum v2 - 4",
      "action": false,
      "timestamp": "2023-10-19T14:03:20+00:00"
    },
    {
      "id": "2a4fec0ea1984999b30cdd4cf6b8cd0d",
      "sender": "kanzure",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:03:52+00:00"
    },
    {
      "id": "2233347825c9408dbe6c1cc7a440f365",
      "sender": "achow101",
      "payload": "We decided at CoreDev to go with the top 3 projects instead of 4, so that would be package relay, silent payments, and one of multiprocess or legacy wallet removal.",
      "action": false,
      "timestamp": "2023-10-19T14:04:25+00:00"
    },
    {
      "id": "e903575bab1644c1b070f00eefe22f93",
      "sender": "pinheadmz",
      "payload": "ooh a runoff",
      "action": false,
      "timestamp": "2023-10-19T14:04:41+00:00"
    },
    {
      "id": "1a969eacedfe4907918671f386a05bdb",
      "sender": "achow101",
      "payload": "i would be happy to have multiprocess as the priority project since legacy wallet removal has a plan to move forward this release anyways",
      "action": false,
      "timestamp": "2023-10-19T14:05:13+00:00"
    },
    {
      "id": "d10d723961534f91ba6f73e268c68fcd",
      "sender": "_aj_",
      "payload": "i count 9 for cmake?",
      "action": false,
      "timestamp": "2023-10-19T14:05:40+00:00"
    },
    {
      "id": "e5199997bbb04f2ab7a95b35b3990e3a",
      "sender": "instagibbs",
      "payload": "cmake is happening when it's happening regardless iiuc",
      "action": false,
      "timestamp": "2023-10-19T14:05:54+00:00"
    },
    {
      "id": "8e23207b4b0741e3bf6c0ebc8060be77",
      "sender": "_aj_",
      "payload": "true :)",
      "action": false,
      "timestamp": "2023-10-19T14:06:01+00:00"
    },
    {
      "id": "b8474cc513ab40ea8739b784c3986f92",
      "sender": "instagibbs",
      "payload": "Two Weeks(TM) whenever ready",
      "action": false,
      "timestamp": "2023-10-19T14:06:03+00:00"
    },
    {
      "id": "35a27e7bb2fc43c7b8648d7343da225c",
      "sender": "fanquake",
      "payload": "Sometime after c++20",
      "action": false,
      "timestamp": "2023-10-19T14:06:04+00:00"
    },
    {
      "id": "d95c07a104b248cd8ef2075d208aeed5",
      "sender": "TheCharlatan",
      "payload": "^^",
      "action": false,
      "timestamp": "2023-10-19T14:06:19+00:00"
    },
    {
      "id": "ee294d9490bd4bf18e25a84ceed9d920",
      "sender": "_aj_",
      "payload": "fanquake: woah</keanu>",
      "action": false,
      "timestamp": "2023-10-19T14:06:26+00:00"
    },
    {
      "id": "487a026942854c6ea9a06d858af2c6e8",
      "sender": "achow101",
      "payload": "_aj_: i've not included w0xlt as they aren't in the org, and haven't seemed to be active recently?",
      "action": false,
      "timestamp": "2023-10-19T14:06:27+00:00"
    },
    {
      "id": "c6652a399fe64a2e9087d1fcaee8c8c0",
      "sender": "_aj_",
      "payload": "achow101: ok",
      "action": false,
      "timestamp": "2023-10-19T14:06:42+00:00"
    },
    {
      "id": "3d06c20a913e4b488f63f179ae203a0d",
      "sender": "achow101",
      "payload": "any other thoughts on multiprocess vs. legacy wallet removal?",
      "action": false,
      "timestamp": "2023-10-19T14:09:07+00:00"
    },
    {
      "id": "c6678edfa2c64852868d1c69abc15738",
      "sender": "vasild",
      "payload": "which one of mine did you count?",
      "action": false,
      "timestamp": "2023-10-19T14:10:17+00:00"
    },
    {
      "id": "77486e550da7452282a216dc6862b7ca",
      "sender": "achow101",
      "payload": "vasild: the signaling one",
      "action": false,
      "timestamp": "2023-10-19T14:10:34+00:00"
    },
    {
      "id": "855f75df96454645a5c6028d1dec577e",
      "sender": "instagibbs",
      "payload": "legacy wallet removal is your baby, if you think it's fine not being priority it's probably fine?",
      "action": false,
      "timestamp": "2023-10-19T14:11:05+00:00"
    },
    {
      "id": "b968f6c4085f4ce69f712b533011cd59",
      "sender": "fjahr",
      "payload": "achow101: if you are fine with multiprocessing taking the 3rd spot sounds good to me, I think multiprocess certainly needs more attention to make progress",
      "action": false,
      "timestamp": "2023-10-19T14:11:33+00:00"
    },
    {
      "id": "5b43b963969e42e1bdfc4f8c538df821",
      "sender": "_aj_",
      "payload": "removing code seems easier to rebase than adding code, maybe?",
      "action": false,
      "timestamp": "2023-10-19T14:11:39+00:00"
    },
    {
      "id": "a51377f51f30496196edc10eba9bd009",
      "sender": "b10c",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:12:34+00:00"
    },
    {
      "id": "5cd6659549964c08933248154171d25c",
      "sender": "sipa",
      "payload": "hi",
      "action": false,
      "timestamp": "2023-10-19T14:12:40+00:00"
    },
    {
      "id": "c7cde017ae764224a6c2f6cc2cdef141",
      "sender": "achow101",
      "payload": "_aj_: you'd think so. but I started rebasing my 2 year old removal branch and it's not a fun time",
      "action": false,
      "timestamp": "2023-10-19T14:12:42+00:00"
    },
    {
      "id": "f11d0bad3fa0496fab30da65eb1391f2",
      "sender": "fjahr",
      "payload": "_aj_ I think it's the same, it just depends on how intermingled the change is with the rest of the code.",
      "action": false,
      "timestamp": "2023-10-19T14:14:46+00:00"
    },
    {
      "id": "71d64f246d034faab636df5c6d83243e",
      "sender": "achow101",
      "payload": "is there a tracking issue for multiprocess?",
      "action": false,
      "timestamp": "2023-10-19T14:14:52+00:00"
    },
    {
      "id": "a0f4543b332042d2926f919427bfe048",
      "sender": "glozow",
      "payload": "is ryan here?",
      "action": false,
      "timestamp": "2023-10-19T14:15:11+00:00"
    },
    {
      "id": "763c975ac7f940d39ab113f7739879e9",
      "sender": "instagibbs",
      "payload": "ryanofsky ping",
      "action": false,
      "timestamp": "2023-10-19T14:15:16+00:00"
    },
    {
      "id": "18efb2f0a14b486e8ef947a91038ca60",
      "sender": "sipa",
      "payload": "just pinged him IRL",
      "action": false,
      "timestamp": "2023-10-19T14:15:24+00:00"
    },
    {
      "id": "645779abd3f14b27ad8368bd377ea206",
      "sender": "ryanofsky",
      "payload": "no, can easily create one",
      "action": false,
      "timestamp": "2023-10-19T14:15:33+00:00"
    },
    {
      "id": "937b85356522462d97640438880cf0e7",
      "sender": "instagibbs",
      "payload": "In RimworLd",
      "action": false,
      "timestamp": "2023-10-19T14:15:37+00:00"
    },
    {
      "id": "3dadb39dd6dd4c359e5ca478a0b2ceb9",
      "sender": "furszy",
      "payload": "I think that people working on the wallet will continue reviewing PRs (or at least I will) vs multiprocess that needs some momentum",
      "action": false,
      "timestamp": "2023-10-19T14:15:38+00:00"
    },
    {
      "id": "d753da6d119041728d30487afacf7133",
      "sender": "fjahr",
      "payload": "There are #10102 and https://github.com/bitcoin/bitcoin/projects/10",
      "action": false,
      "timestamp": "2023-10-19T14:15:43+00:00"
    },
    {
      "id": "d978fc477a0b41269db682e506afb45e",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/10102 | Multiprocess bitcoin by ryanofsky \u00c3\u0082\u00c2\u00b7 Pull Request #10102 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:15:46+00:00"
    },
    {
      "id": "2e7c3f2ba8594efdb8cbc3f77874632a",
      "sender": "achow101",
      "payload": "https://github.com/orgs/bitcoin/projects/1/views/2 is updated",
      "action": false,
      "timestamp": "2023-10-19T14:16:10+00:00"
    },
    {
      "id": "681d52587dad4059baf4e957d383f999",
      "sender": "_aj_",
      "payload": "projects/10 is closed/read-only though",
      "action": false,
      "timestamp": "2023-10-19T14:16:11+00:00"
    },
    {
      "id": "2fbb050165d7452e9fcd66e9df6fa5f3",
      "sender": "stickies-v",
      "payload": "there's also https://github.com/bitcoin-core/bitcoin-devwiki/wiki/Process-Separation",
      "action": false,
      "timestamp": "2023-10-19T14:16:22+00:00"
    },
    {
      "id": "972d378c21964976961042a7fdef2af1",
      "sender": "ryanofsky",
      "payload": "right now all the code is just in 10102, there are many commits that could be split up",
      "action": false,
      "timestamp": "2023-10-19T14:16:43+00:00"
    },
    {
      "id": "03430a3da3974943a4a7dc08e4fdcad8",
      "sender": "achow101",
      "payload": "#topic Ad-hoc high priority for review",
      "action": false,
      "timestamp": "2023-10-19T14:19:11+00:00"
    },
    {
      "id": "d2a422e4abee45aba8b74b196ea08299",
      "sender": "core-meetingbot",
      "payload": "topic: Ad-hoc high priority for review",
      "action": false,
      "timestamp": "2023-10-19T14:19:11+00:00"
    },
    {
      "id": "864f127667ec4e0682ad908c1f9f95e4",
      "sender": "achow101",
      "payload": "Anything to add or remove from https://github.com/orgs/bitcoin/projects/1/views/4",
      "action": false,
      "timestamp": "2023-10-19T14:19:18+00:00"
    },
    {
      "id": "5dc6ddfaec0541338def159bba49f579",
      "sender": "pinheadmz",
      "payload": "I wanna shill #27375 again",
      "action": false,
      "timestamp": "2023-10-19T14:19:31+00:00"
    },
    {
      "id": "93e7e517818a42f2a339e8047f2dc92d",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/27375 | net: support unix domain sockets for -proxy and -onion by pinheadmz \u00c3\u0082\u00c2\u00b7 Pull Request #27375 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:19:34+00:00"
    },
    {
      "id": "72dfdc6f3bac43b79bb47f676d6d8b52",
      "sender": "pinheadmz",
      "payload": "has 2 ACKs, follwoups will offer unix sockets for rpc and zmq as well",
      "action": false,
      "timestamp": "2023-10-19T14:19:44+00:00"
    },
    {
      "id": "0a2fac01d8a14d8683220be6951fc9ec",
      "sender": "pinheadmz",
      "payload": "imagine no more http://localhost!",
      "action": false,
      "timestamp": "2023-10-19T14:19:49+00:00"
    },
    {
      "id": "3b51b012874940bc9bedf2fcb3193825",
      "sender": "achow101",
      "payload": "cool, will look when we start merging for 27.0",
      "action": false,
      "timestamp": "2023-10-19T14:21:12+00:00"
    },
    {
      "id": "818c19b4cd6f44409209423fe3bdf285",
      "sender": "achow101",
      "payload": "#topic 26.0 milestone",
      "action": false,
      "timestamp": "2023-10-19T14:22:16+00:00"
    },
    {
      "id": "8fda475d86ac406e8bf82b9ea50a4896",
      "sender": "core-meetingbot",
      "payload": "topic: 26.0 milestone",
      "action": false,
      "timestamp": "2023-10-19T14:22:17+00:00"
    },
    {
      "id": "b7fde4794cfa4a5ea80d88a319a49414",
      "sender": "achow101",
      "payload": "branching is scheduled for sunday. there's still a bunch of things in the milestone",
      "action": false,
      "timestamp": "2023-10-19T14:22:36+00:00"
    },
    {
      "id": "573a307037eb45dd8a9e7963fe16a453",
      "sender": "achow101",
      "payload": "https://github.com/bitcoin/bitcoin/milestone/60",
      "action": false,
      "timestamp": "2023-10-19T14:22:40+00:00"
    },
    {
      "id": "84e3174f0fce4cb88fb11ee6b5387e31",
      "sender": "achow101",
      "payload": "please review them",
      "action": false,
      "timestamp": "2023-10-19T14:23:00+00:00"
    },
    {
      "id": "d5fdbc1f11de41f98292219b4236df6f",
      "sender": "achow101",
      "payload": "#topic Fix for hash_serialized2 calculation and implications (for context see #28675 and #28685) (fjahr)",
      "action": false,
      "timestamp": "2023-10-19T14:23:43+00:00"
    },
    {
      "id": "3040a529cb524be3a1f59554e0a07e2c",
      "sender": "core-meetingbot",
      "payload": "topic: Fix for hash_serialized2 calculation and implications (for context see #28675 and #28685) (fjahr)",
      "action": false,
      "timestamp": "2023-10-19T14:23:43+00:00"
    },
    {
      "id": "7a01eb6afde348f484e0b037d4af430d",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/28675 | Assumeutxo: Altered txoutset dump is still valid \u00c3\u0082\u00c2\u00b7 Issue #28675 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:23:44+00:00"
    },
    {
      "id": "37a018ceeeae4148bd25e3a0f388bbfa",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/28685 | coinstats, assumeutxo: fix hash_serialized2 calculation by fjahr \u00c3\u0082\u00c2\u00b7 Pull Request #28685 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:23:45+00:00"
    },
    {
      "id": "98c5e258fbd24ca4ab1718ad39d9e75a",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/28675 | Assumeutxo: Altered txoutset dump is still valid \u00c3\u0082\u00c2\u00b7 Issue #28675 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:23:46+00:00"
    },
    {
      "id": "6da57e7f2bb644b58f73eda6b532d533",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/28685 | coinstats, assumeutxo: fix hash_serialized2 calculation by fjahr \u00c3\u0082\u00c2\u00b7 Pull Request #28685 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:23:47+00:00"
    },
    {
      "id": "61ddba5e9c9f4421b8e4e01f92872b4a",
      "sender": "fjahr",
      "payload": "tldr; the hash_serialized_2 calculation had a bug as described here by theStack: https://github.com/bitcoin/bitcoin/issues/28675#issuecomment-1770389468 The fix is in #28685 and it will be renamed to hash_serialized_3.",
      "action": false,
      "timestamp": "2023-10-19T14:23:56+00:00"
    },
    {
      "id": "64fdc4d2896143d1a290b8b1cd1701e4",
      "sender": "gribble",
      "payload": "https://github.com/bitcoin/bitcoin/issues/28685 | coinstats, assumeutxo: fix hash_serialized2 calculation by fjahr \u00c3\u0082\u00c2\u00b7 Pull Request #28685 \u00c3\u0082\u00c2\u00b7 bitcoin/bitcoin \u00c3\u0082\u00c2\u00b7 GitHub",
      "action": false,
      "timestamp": "2023-10-19T14:23:57+00:00"
    },
    {
      "id": "1f5490f745f74fa5a4518aa220ea2f66",
      "sender": "fjahr",
      "payload": "This has implications particularly for assumeutxo, the hashes in the chainparams will need to change. But we are also discussing a bunch of additional changes to improve further while we change the resulting hash already.",
      "action": false,
      "timestamp": "2023-10-19T14:24:05+00:00"
    },
    {
      "id": "0eb73026ecdf418c810878b4c6950188",
      "sender": "fjahr",
      "payload": "Particularly dergoegge found another issue with his fuzzer on negative values and proposed to get rid of VARINT completely. I would really like to hear if people would like do that or if we should keep the change more minimal. I have started preparing the change with the VARINTs removed but it would be good to know which one we want now so we only have to change the chainparams once since that causes some significant review",
      "action": false,
      "timestamp": "2023-10-19T14:24:37+00:00"
    },
    {
      "id": "870127acf8f4436cb1b6d7e944e05a70",
      "sender": "fjahr",
      "payload": "effort.",
      "action": false,
      "timestamp": "2023-10-19T14:24:37+00:00"
    },
    {
      "id": "dff51605ea5946aaa599a08bd1b76a97",
      "sender": "fjahr",
      "payload": "To be precise I think we have the choice between getting rid of all VARINTs in kernel/coinstats, getting rid of it just where dergoegge found the issue and leaving it and checking for negative value in deserialization (I guess we will add this check either way).",
      "action": false,
      "timestamp": "2023-10-19T14:25:01+00:00"
    },
    {
      "id": "b8fa219489164127ad8c486920656e85",
      "sender": "fjahr",
      "payload": "So generally would be good to have a few more eyes on this but particularly looking for feedback on the VARINT question.",
      "action": false,
      "timestamp": "2023-10-19T14:25:37+00:00"
    },
    {
      "id": "12058f3b6ebe45abb42867833b2bba22",
      "sender": "sipa",
      "payload": "For performance reasons, my guess would be that removing all VARINTs from UTXO hashes is better.",
      "action": false,
      "timestamp": "2023-10-19T14:26:01+00:00"
    },
    {
      "id": "6dd92e53b19041d7876344f4eaf14b6c",
      "sender": "theStack",
      "payload": "as commented in the PR, I think removing VARINTs in `ApplyHash` would make sense, but is only an option if that doesn't come with noticable loss in performance",
      "action": false,
      "timestamp": "2023-10-19T14:26:03+00:00"
    },
    {
      "id": "ac312b7a03004de2ad5a2ba6e0c513bb",
      "sender": "sipa",
      "payload": "I suspect that VARINT coding costs per-byte more than SHA256 per-byte.",
      "action": false,
      "timestamp": "2023-10-19T14:26:26+00:00"
    },
    {
      "id": "b8693b40f5434e38a4910ee9528857ff",
      "sender": "sipa",
      "payload": "But I haven't benchmarked it.",
      "action": false,
      "timestamp": "2023-10-19T14:26:37+00:00"
    },
    {
      "id": "42e25d75babf435dad8686621c5ac21b",
      "sender": "dergoegge",
      "payload": "something that also seems weird to me is that the serialization format is different for hashing with muhash",
      "action": false,
      "timestamp": "2023-10-19T14:26:41+00:00"
    },
    {
      "id": "7a2d0b4da05e4f2a9a5a0d73db02d613",
      "sender": "theStack",
      "payload": "sipa: oh, interesting, i would have expected it's the other way round. but i don't know too much about sha256 internals TBH",
      "action": false,
      "timestamp": "2023-10-19T14:27:07+00:00"
    },
    {
      "id": "76d26e6f459f4aedb5d50e8cd3f605f3",
      "sender": "fjahr",
      "payload": "I think at the time we already new the muhash one made more sense, just kept the hash_serialized one around for consistency",
      "action": false,
      "timestamp": "2023-10-19T14:27:24+00:00"
    },
    {
      "id": "779ac72c67cd4f5888a083abd119fe4e",
      "sender": "fjahr",
      "payload": "*knew",
      "action": false,
      "timestamp": "2023-10-19T14:27:33+00:00"
    },
    {
      "id": "762722e88f6145ec893df88c46dbb3db",
      "sender": "sipa",
      "payload": "SHA256 (without hardware acceleration) is maybe a dozen CPU cycles per byte; varint coding involves lots of branches that can be mispredicted... less work overall, but probably a lot lower ILP",
      "action": false,
      "timestamp": "2023-10-19T14:27:58+00:00"
    },
    {
      "id": "7129667b824b4f72ae14c2b0a92ebd76",
      "sender": "sipa",
      "payload": "Does the fact that it may impact chainparams really matter? I can imagine it's likely we want to revisit the actual hashing scheme for assumeutxo before mainnet deployment anyway, depending on how P2P serving would happen.",
      "action": false,
      "timestamp": "2023-10-19T14:29:01+00:00"
    },
    {
      "id": "7ceb13ab4dda4664b73914e90f494851",
      "sender": "achow101",
      "payload": "was hash_serialized_2 always incorrect?",
      "action": false,
      "timestamp": "2023-10-19T14:29:22+00:00"
    },
    {
      "id": "275ec23f24f14716bcfe9f7776242fe3",
      "sender": "fjahr",
      "payload": "That would be another option, to apply the MuHash serialization so we are consistent",
      "action": false,
      "timestamp": "2023-10-19T14:29:36+00:00"
    },
    {
      "id": "99a3ae4f37644a08ab2770b1f2a40a60",
      "sender": "fjahr",
      "payload": "achow101: since 2018",
      "action": false,
      "timestamp": "2023-10-19T14:29:43+00:00"
    },
    {
      "id": "1437ac5ea6724833a84d6b7d970caea4",
      "sender": "theStack",
      "payload": "achow101: i think it's incorrect since v0.17 (see linked commit in the issue)",
      "action": false,
      "timestamp": "2023-10-19T14:29:47+00:00"
    },
    {
      "id": "f3eee7f08328461bba55b0a03e961748",
      "sender": "theStack",
      "payload": "at least that's the earliest tag that is shown by `git tag --contains 34ca75032012562d226b06ef9e86a2948d3a8d16`",
      "action": false,
      "timestamp": "2023-10-19T14:30:46+00:00"
    },
    {
      "id": "bba9344d2f37420b8a3d15dfbaf32cf0",
      "sender": "fjahr",
      "payload": "sipa: at least we need to fix the testnet and signet params before the release",
      "action": false,
      "timestamp": "2023-10-19T14:30:59+00:00"
    },
    {
      "id": "9bf909fbf6494ceea0e005f737e15b21",
      "sender": "sipa",
      "payload": "fjahr: that doesn't sound like a big deal",
      "action": false,
      "timestamp": "2023-10-19T14:31:45+00:00"
    },
    {
      "id": "b993e08b4cf845e78c6ac54c5cd25673",
      "sender": "fjahr",
      "payload": "not sure when we will even get into p2p distribution, if that's a focus for jamesob for 27",
      "action": false,
      "timestamp": "2023-10-19T14:31:48+00:00"
    },
    {
      "id": "afe6340389bb43248c368da572bba41c",
      "sender": "fjahr",
      "payload": "sipa: I just would like it if we can come to an agreement now then we don't need another follow-up to 28685",
      "action": false,
      "timestamp": "2023-10-19T14:33:22+00:00"
    },
    {
      "id": "9ee7a355663f468d85d5c1e9a28b2b21",
      "sender": "achow101",
      "payload": "if we change the serialization, will the coinstatsindex need to be reindexed?",
      "action": false,
      "timestamp": "2023-10-19T14:34:20+00:00"
    },
    {
      "id": "2ee2937945eb4da08bcdf10aebde07db",
      "sender": "fjahr",
      "payload": "no, the hash_serialized is not part of it",
      "action": false,
      "timestamp": "2023-10-19T14:34:36+00:00"
    },
    {
      "id": "ebbfb3f0f579431390fe237026b6825a",
      "sender": "sipa",
      "payload": "i'm happy with either just using the muhash serialization for hash_serialized_3, or keeping VARINT",
      "action": false,
      "timestamp": "2023-10-19T14:35:07+00:00"
    },
    {
      "id": "9984bbea4653488c824d5bec6bca986f",
      "sender": "sipa",
      "payload": "but a benchmark would be useful",
      "action": false,
      "timestamp": "2023-10-19T14:35:14+00:00"
    },
    {
      "id": "dc459d91efce4b9abd7fcadcf6282f7f",
      "sender": "achow101",
      "payload": "why are the serialziations different?",
      "action": false,
      "timestamp": "2023-10-19T14:35:45+00:00"
    },
    {
      "id": "0e3b0b645d4d401a961da78b13da5b98",
      "sender": "sipa",
      "payload": "i suppose because they were designed at different times",
      "action": false,
      "timestamp": "2023-10-19T14:36:19+00:00"
    },
    {
      "id": "ae301b7dffce4d5999c4d8fa2a0266cc",
      "sender": "fjahr",
      "payload": "what I wrote above, I think pieter came up with the one for muhash but we kept the old one for consistency of hash_serialized",
      "action": false,
      "timestamp": "2023-10-19T14:37:15+00:00"
    },
    {
      "id": "6b7ff74f3b454bb6b8c211e78a49298c",
      "sender": "sipa",
      "payload": "well i think i also came up with the one for hash_serialized",
      "action": false,
      "timestamp": "2023-10-19T14:37:36+00:00"
    },
    {
      "id": "c5a14c3a147049779d3ba0f910973c66",
      "sender": "fjahr",
      "payload": ":)",
      "action": false,
      "timestamp": "2023-10-19T14:37:57+00:00"
    },
    {
      "id": "2dddba755ec845a6be451450b13bd0c7",
      "sender": "sipa",
      "payload": "the muhash one is simpler, the hash_serialized one is more compact",
      "action": false,
      "timestamp": "2023-10-19T14:38:11+00:00"
    },
    {
      "id": "a183e87ae015479898d45638cc7f2958",
      "sender": "achow101",
      "payload": "it'd be nice if they were consistent",
      "action": false,
      "timestamp": "2023-10-19T14:38:17+00:00"
    },
    {
      "id": "d26cc3532be54d7897bbca09bd857767",
      "sender": "achow101",
      "payload": "but it seems like people don't particularly care?",
      "action": false,
      "timestamp": "2023-10-19T14:38:47+00:00"
    },
    {
      "id": "28a730c57dc549cfb2c23a335e44d939",
      "sender": "sipa",
      "payload": "for muhash i think performance matters less also, because the serialization cost is probably dwarfed by the muhash math overhead",
      "action": false,
      "timestamp": "2023-10-19T14:39:04+00:00"
    },
    {
      "id": "f8af70cbd69d4bc19bbcaf1eff9eb1d0",
      "sender": "sipa",
      "payload": "can someone benchmark if it matters at all, and if the more compact one is not significantly better, pick the muhash serialization for hash_serialized_3 ?",
      "action": false,
      "timestamp": "2023-10-19T14:39:30+00:00"
    },
    {
      "id": "0d2402e29dc14db9b6bc2f92c9066f66",
      "sender": "fjahr",
      "payload": "I can run the benchmarks and post them in the PR",
      "action": false,
      "timestamp": "2023-10-19T14:39:52+00:00"
    },
    {
      "id": "b50e6e1429ed4161a83f0e0e496ae1c3",
      "sender": "sipa",
      "payload": "great",
      "action": false,
      "timestamp": "2023-10-19T14:40:30+00:00"
    },
    {
      "id": "af9917f4b14245e4ac6e36b2efdbb2dc",
      "sender": "achow101",
      "payload": "sounds like a plan",
      "action": false,
      "timestamp": "2023-10-19T14:40:32+00:00"
    },
    {
      "id": "b10883224d5a4393acdf42e6e152a2a3",
      "sender": "achow101",
      "payload": "any other topics to discuss?",
      "action": false,
      "timestamp": "2023-10-19T14:41:01+00:00"
    },
    {
      "id": "df3b8213aeec48d29caab3756a76578f",
      "sender": "MacroFake",
      "payload": "Is the content hash needed, if the full file hash will be checked in the future?",
      "action": false,
      "timestamp": "2023-10-19T14:42:33+00:00"
    },
    {
      "id": "7a7989ab01174c549fd684f00592112e",
      "sender": "MacroFake",
      "payload": "I guess to protect against the file changing while reading it?",
      "action": false,
      "timestamp": "2023-10-19T14:42:55+00:00"
    },
    {
      "id": "954ff06da25f4e33983e51c3d4c4b5bf",
      "sender": "sipa",
      "payload": "i could imagine introducing some kind of merkle-structured content hash in the future, that's used as a full file hash too",
      "action": false,
      "timestamp": "2023-10-19T14:43:55+00:00"
    },
    {
      "id": "78c3b9112e6c406ab6b5784f4770a850",
      "sender": "sipa",
      "payload": "but it sounds like there is a lot of design space for that",
      "action": false,
      "timestamp": "2023-10-19T14:44:12+00:00"
    },
    {
      "id": "beed016bf73e416380d957bf3d82e6cd",
      "sender": "bitcoin-git",
      "payload": "[bitcoin] fanquake pushed 2 commits to master: https://github.com/bitcoin/bitcoin/compare/9e616baec0f2...6e721c923c87",
      "action": false,
      "timestamp": "2023-10-19T14:45:57+00:00"
    },
    {
      "id": "3d1563cf988b496dbf7cea9990e10b30",
      "sender": "bitcoin-git",
      "payload": "bitcoin/master 2338715 fanquake: doc: add historical release notes for 25.1",
      "action": false,
      "timestamp": "2023-10-19T14:45:57+00:00"
    },
    {
      "id": "ab02f6866d9d4d4caf4e4a534d12a619",
      "sender": "bitcoin-git",
      "payload": "bitcoin/master 6e721c9 fanquake: Merge bitcoin/bitcoin#28667: doc: add historical release notes for 25.1",
      "action": false,
      "timestamp": "2023-10-19T14:45:58+00:00"
    },
    {
      "id": "e1971109b42f492598b26e805e3cb2ce",
      "sender": "bitcoin-git",
      "payload": "[bitcoin] fanquake merged pull request #28667: doc: add historical release notes for 25.1 (master...add_25_1_rel_notes) https://github.com/bitcoin/bitcoin/pull/28667",
      "action": false,
      "timestamp": "2023-10-19T14:46:03+00:00"
    },
    {
      "id": "88e3eec9876d4bdf81ddf1c747d6719e",
      "sender": "MacroFake",
      "payload": "Are you saying with your proposal the full file hash would be equal to the content hash?",
      "action": false,
      "timestamp": "2023-10-19T14:46:04+00:00"
    },
    {
      "id": "a226e19b8bfa47fb9d25e44fc4a0627c",
      "sender": "MacroFake",
      "payload": "(With full file hash I mean the dumb hash of the byte file, without parsing the content or looking at it)",
      "action": false,
      "timestamp": "2023-10-19T14:46:53+00:00"
    },
    {
      "id": "8229bcced7d546b5babf2a5c51a4a781",
      "sender": "fjahr",
      "payload": "I think flat file hash might be limiting as a hard requirement when we think about p2p distribution, not sure if it makes sense as temporary belt and suspenders",
      "action": false,
      "timestamp": "2023-10-19T14:47:01+00:00"
    },
    {
      "id": "570c089e619043db9e3b160e7595f5ad",
      "sender": "sipa",
      "payload": "no; i'm saying you'd verify the full file by computing its contents hash... which is designed in such a way that it's easy to validate the serialized file (and chunks of it) against",
      "action": false,
      "timestamp": "2023-10-19T14:47:26+00:00"
    },
    {
      "id": "5496c23991444d228459e8d466721994",
      "sender": "sipa",
      "payload": "and not having a dumb hash of the file at all",
      "action": false,
      "timestamp": "2023-10-19T14:47:42+00:00"
    },
    {
      "id": "4eb95fe714c64ef6a7df861a6d868646",
      "sender": "sipa",
      "payload": "i guess there could also be a dumb hash of the whole file as a final last-resort check, but for P2P distribution you really need a way to check for incorrect chunks very early anyway",
      "action": false,
      "timestamp": "2023-10-19T14:49:00+00:00"
    },
    {
      "id": "775ef6f4c0b04c9f90a1f22b67e6c38f",
      "sender": "sipa",
      "payload": "i guess it could be a tree-structured hash over the serialized file (and not over individual utxo entries in it)?",
      "action": false,
      "timestamp": "2023-10-19T14:51:10+00:00"
    },
    {
      "id": "bd65a419ed7e453a9ec55f819184524a",
      "sender": "achow101",
      "payload": "seems like something that requires more thought than we can do for a fix for this release",
      "action": false,
      "timestamp": "2023-10-19T14:52:12+00:00"
    },
    {
      "id": "5bfdce63bf7a481585f45f662ad1fcc0",
      "sender": "sipa",
      "payload": "but this doesn't need to be part of this meeting, i think",
      "action": false,
      "timestamp": "2023-10-19T14:52:13+00:00"
    },
    {
      "id": "f60538a5382540f38f16c29810aecd49",
      "sender": "achow101",
      "payload": "#endmeeting",
      "action": false,
      "timestamp": "2023-10-19T14:52:30+00:00"
    }
  ],
  "events": [
    {
      "event_type": "START_MEETING",
      "message": {
        "id": "e0fb8fa3e06747e1b252ff04b2de4569",
        "sender": "achow101",
        "payload": "#startmeeting",
        "action": false,
        "timestamp": "2023-10-19T14:00:25+00:00"
      },
      "operand": null,
      "id": "e0fb8fa3e06747e1b252ff04b2de4569",
      "timestamp": "2023-10-19T14:00:25+00:00"
    },
    {
      "event_type": "TOPIC",
      "message": {
        "id": "86a84914db53416ea53476fe1b2ee559",
        "sender": "achow101",
        "payload": "#topic priority projects",
        "action": false,
        "timestamp": "2023-10-19T14:01:51+00:00"
      },
      "operand": "priority projects",
      "id": "86a84914db53416ea53476fe1b2ee559",
      "timestamp": "2023-10-19T14:01:51+00:00"
    },
    {
      "event_type": "LINK",
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