Lead Core Lightning, Standards Wrangler, Bitcoin Script Restoration ponderer, coder. Full time employed on Free and Open Source Software since 1998. Joyous hacking with others for over 25 years.
Public Key
npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s NIP-57 Address
npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s@npub.cash
Profile Code
nprofile1qqs0zuj4s6jq9sr2ajqc69rc53d25rwpd3afcjrfm97r2qek69hcuscpz3mhxue69uhhyetvv9ujuerpd46hxtnfduurfv0s
Author Public Key
npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Show more details
Published at
2024-05-23T14:45:45+02:00 Event JSON
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"tags": [
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"User profile for Rusty Russell"
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"content": "{\"name\":\"Rusty Russell\",\"display_name\":\"Rusty Russell\",\"website\":\"https://rusty.ozlabs.org\",\"about\":\"Lead Core Lightning, Standards Wrangler, Bitcoin Script Restoration ponderer, coder. Full time employed on Free and Open Source Software since 1998. Joyous hacking with others for over 25 years.\",\"lud16\":\"npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s@npub.cash\",\"nip05\":\"[email protected] \",\"picture\":\"https://en.m.wikipedia.org/wiki/Rusty_Russell#/media/File%3ARusty_Russell-lca2011%2Bcrop.jpg\"}" ,
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Last Notes npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Last three weeks I've been working on improving payments. Critical to this are five things: npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell So, askrene (the routing oracle plugin) has support for layers, each containing information about channels (also, can add/remove channels and nodes, but that's mainly for special-effects for particular payments). npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I'm working on a new pay plugin called xpay (working title). It's designed to use the new (very WIP) askrene plugin, which provides routes. Actually, most of the work is there, fixing and enhancing that. Especially diagnosis: *why* did it give a weird/no route? Common issues are: there's a good channel but it's offline, or doesn't have capacity, or you don't have enough capacity at all, or the recipient doesn't. We've had issues where gossip is missing, too: detecting when that happens is an open research question, but we'll start probing more aggressively. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Started working my way though the classic "How to Win Friends and Influence People" with my 10-yo. I should have re-read this years ago! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell 1. I'm always interested in open source things. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Fixed just now, Works For Me! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Always enlightening to hear directly from Gloria! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell ? I don't know anyone involved. But this title is poor judgement, and if nobody says anything maybe that will become a norm. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell "Gauche at best, unhinged at worst" then. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Your title is offensive, the question is, is Jeff ok with it? If he is, perhaps it's edgy and clever. If he isn't, it's gauche at best, unhinged at worst. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yes! I'll ping you. What TZ are you RN? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell They're fixing it: after some testing, apparently this one wasn't our fault (on CLN v24.08rc3) npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I tried (and somewhat succeeded) in taking a week off work. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Audio should be fine. There's one graph, I think. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #gsr npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell And of course, since it's making a tx already it might be a good time to cross-splice funds from once channel to another... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Absolutely. You can theoretically do that already, but I don't want to have to do the math, I want to just say "open a channel to X" and have it figure out where to get the funds. It might be optimal to use onchain funds, or even close down a low-utilization channel entirely into the new one. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Then it depends entirely on who will watch? Neither Schiff's regular audience nor Bitcoiners are going to be persuaded. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Are you going to change anyone's mind? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #cln #dev #someday npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell The fundamental difference is between defined benefit (pension scheme) and defined contribution (super). The latter *is* thought of as an entitlement, but the separate accounting makes that closer to the truth? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yeah I've been reading your parsing code. We have to talk 🤣 npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell If you put it that way: I guess I'm also betting 2M sats it won't work :) npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Australia transitioned away from defined benefit schemes in the eighties and early nineties, and has increased retirement age (not a legal concept here, but when you can access a pension or your benefits) has been increasing too, from 55 when I was young to 67 currently. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell @nprofile…6h5g put his hand up first, hes taking a look. I think the coding might be the easy part though: getting the PR merged is another thing altogether... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Simple rework PR up. I also want to update your BOLT11 parser to the latest (it's buggy). npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Let's see what I can do after lunch then. Fun! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Me! I wrote an Android app years ago, but not my jam. Someone who knows what they're doing can probably do this in 1/100th of the time I can... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Any Android devs out there? I will pay 2 million sats for someone to implement the option to customize Signal notifications for *reactions* separately from new messages. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yeah, it's a well-kept secret unfortunately. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Reviewing. You should have used tdb, of course, but as Tridge said, you don't need an excuse to rewrite something! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell What format/how do I create "queries"? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Otoh, I can't see your replies in gossip. So... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Wow. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Linux desktop nostr apps? I'm using gossip, but it feels clunky. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell It's 50 years since the greatest book on programming was published! Elements of Programming Style. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell In those cases, iterate. Almost everywhere else became non-dups, so will now assert if you try to insert a duplicate... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #cln #dev npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Sorry for the delay, I've been dwelling on this a little. I think that self-custody is easier than many alternatives, unlike with cash: I use Green wallet myself which shows how you can have support while still having ultimate control. I believe Casa have a similar product for larger custody. I hope to see this kind of offering mature, and be attractive beyond the DIY crowd: Bitcoin insurance will be necessarily limited, there are going to be more high profile custody disasters. Also, there's a possibility of generational attitude change: if fiat becomes noticably worse, many people will expend effort looking after their money. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell In that model, you never have full custody. Someone sends money into the mint and they hold it on your behalf. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I've had both, but my Logitech trackball is at least 20 years old and still going strong... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell (Hi, Lyn, long time fan!) npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell So far I've got the RPI3, RPI5, my Intel laptop and my AMD build machine. Neither of the last two are recent, but I'm not really interested in speed records. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Jeremy Rubin asked on Twitter what was happening with #GSR. Good q! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yes, just need a round tuit... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I somewhat agree: "trust somebody" can be quite efficient. But it's prone to bad incentives (undeclared fractional reserve) which can drive out good actors (who are not as profitable) *then* collapse. I know @nprofile…rt7g has thought about this a fair bit, and has a rotating ecash solution which may address it well enough? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Not really, that I can tell. The custodian you are trusting there is the miners. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell It's hard to get exact numbers, but a significant fraction of the world will not have enough money at one time to spend a single UTXO. This is clear from the uneven distribution of wealth and the inevitable rise in Bitcoin fees. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Indeed, that's the current effort, in every direction. But it definitely has limits. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell British vs American English, sorry. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Lazy content-free post. Blocked. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Thanks, AI. Blocked. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yes. If you're going to use a custodian, ecash is a win. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Liquid is a "trust someone" solution. There are precautions to avoid targeting particular users (confidential amounts and assets) similar to ecash, but it's still a custodian. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell First up, I want to recognize that this is an uncomfortable topic! Bitcoin is inevitably changing towards user-pays, and that's not all positive. But facts we don't like are still facts: can't engineer a solution if we can't think about the problems. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I know, I kept waiting too! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell On the lite end, Blockstream Green, too... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Not a fair assessment: scammers always want you to reassess. "Maybe he's Satoshi this time!" npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I'm disappointed that @nprofile…kr48 never got an answer to his question about what Bitcoin looks like to those who can't afford a UTXO. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Your willingness to enforce your supreme knowledge of right and wrong is WHAT MAKES BITCOIN GREAT npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell 🤣 npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell We are definitely wrong about some things! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Fifteen years! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I am sometimes haunted by the phrase I heard log ago from Eben Moglen: npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Lol, everyone is female except for birth defects :) npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yes! You can *add* pubkeys! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Ignoring, for the moment, that real biology is more complex than that: npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Just got a "call" from "Ledger Live Support". MtGox bringing them all out, I guess. Be careful! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell People keep talking about stable channels. But few people need worry about -10% BTC prices, they worry about -70% prices, which is when they fail. I don't see anyone discussing their service limits here. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell HWI, USB, Linux. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell https://bitcoinmagazine.com/culture/reflections-on-bitcoin-culture npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I would have answered very differently in my youth. Diplomacy, empathy, social situations, relationships: these improve with practice! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell "non-binary" is a gender term, surely... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell As I've aged, I have come to terms with people not asking my permission or seeking my approval. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Gender, as in "which box do I put you in" has always had exceptions. This is new to many. But I am old and sheltered enough to remember wrestling with homosexuality's existence, too. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Good point: where are the hot gay Bitcoiners at? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell You're right! I should have said "a significant number". npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Most of my friends are non-Bitcoiners. A significant fraction are non-binary, an even larger number are neurodiverse, and many are half my age: a great variety of fascinatingly different humans! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #cln #dev npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I just spent way too many hours reworking this part of the spec: I would *really* appreciate feedback on it! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell You should seriously consider this. Annoying as it is to throw away working code, this code is *annoying* in a way few things in the specs are. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #cln #dev npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell You don't need to *ask* a public node to route for you, they can't really tell you're using them this way. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Usually found at the intersection of any fan base and bitcoin. For example, why Apple is going to get into Bitcoin... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell There's a thing I saw often in the early Linux days and still see in Bitcoin communities. People discover Bitcoin and try to wedge it into their existing special interest and extol the crossover as a discovery (rather than a construction). npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yep, spec changed recently, but the change isn't in CLN yet. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Lunduke should always be taken with a large pinch of salt... npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell You assertions about what people will do is ungrounded: people do this currently. Notably, Bitcoin currently has inflation, so one could argue that the transition which will occur is the change! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell You don't need to reach to philosophy to reject this. There was a deliberate decision early on to support the network via usage fees, not via holding fees: otherwise some non-zero inflation would have been the cleanest solution. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #dev #CLN npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell ChaumedToMeetYou npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell The lesson of sigops was exactly that limits should be based on weight, so you don't need to optimize for two different constraints on block construction. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Now the good news. The basic idea is still intact: the speed is indeed proportional to operand size, so the basic idea is correct, it's just the costing of each operation is different. And we could simply say "what's the slowest operation, we'll assume everything is that slow", but comparing (OP_VERIFY, OP_EQUALS), copying (OP_DUP, OP_CAT) and zero-initializing (OP_UPSHIFT) are pretty common operations, so treating them as lower cost is both fairly simple and amply justified by the numbers. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Bad new first. The "bytes touched" model does not actually reflect real costs, even on the RPi 3 (the lowest machine specs I'm measuring). Why? Caching is real, and these kind of linear operations which Bitcoin Script consists of are the most optimal case for readahead, write combining and all the tricks modern CPUs employ. A bytes touched model would have AND-in-place (A &= B, where A and B are 4MB long) be twice as expensive as invert (A = ~A): on my laptop they're actually comparable. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell #Bitcoin #dev #GSR npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell I couldn't find anything on the OpenSats site about how long LTS grants are? A year, three, five, ten? Paid monthly, annually, time-locked? npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Python: it just works, they said! npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell Yes, I understand this feeling. Not quite how I would have expressed it, but there are genuine insights in here: npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell 12 words is more of a super power. npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s Rusty Russell For us, it's often how slow the CI is. cpuset can be used to reproduce this...
