Former co-author of the Bitcoin Optech weekly newsletter (2018-2025) and the third edition of Mastering Bitcoin (2023). Brink.dev grant committee member (2022-) and former board member (2020-22). Lives in Hilo, Hawaii. All opinions are my own.
Public Key
npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu Profile Code
nprofile1qqsgz07wf388du08kn6xj7l3qv9fpudqk7plrp7n9xqq5nwcd9lewkgpp4mhxue69uhkummn9ekx7mqppamhxue69uhkummnw3ezumt0d5q3camnwvaz7tmwdaehgu3wvf5hgcm0d9hx2u3wwdhkx6tpdstak0cw
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Published at
2026-02-25T13:36:42Z Event JSON
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Last Notes npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Haven't heard the pod but I tried OpenClaw and was pretty disappointed. It wasn't that useful without giving it access to all my data and accounts, and I didn't want to do that for privacy, security, and trust reasons. I'm also sticking with my desktop ai tool for now and accessing it from my phone to poke projects along (I'm using tailscale, mosh, and tmux for that). npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Been using it for six months as my main ai tool. Top uses have been for research for articles, website customization, and hobby programing. Probably 10 hrs a week, about $300 in OpenRouter credits a month. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Yes. I also sometimes use phone zoom to read small text when I'm too lazy to get my glasses or bring the text to proper lighting. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Was super creeped out for a moment. My nostr client showed me a Google maps preview for your link, but rather than showing me the location you pinned, the preview showed my current location. It looked like you were either doxing me or staying in the AirBnB next door. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I used to have an air gapped master key with a hot subkey that I used for everything besides key attestation. In that setup, dealing with any sort of tooling was a nightmare, so I gave up on it. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What's the name for the emotion when you ask it to do something and then come back later to discover it wrecked things and you forgot to git commit the previous improvements? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What does "global liquidity valve" mean? Is it something like: when people have excess cash, they buy bitcoin; when they need cash, they sell bitcoin? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Excellent choices! Older but still great is Star Trek II by the late James Horner at the beginning of his career; Battle in the Mutara Nebula remains my favorite spaceship fight song. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I use Darktable almost every day, it's excellent. I think its devs are often frustrated by it being called a Lightroom replacement as Darkroom has pioneered multiple improvements in RAW processing, from a powerful (non-ai) masking system to significantly improved color science. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding The vast majority of anti-social behavior I've witnessed in my life has been on so-called social media. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding About how many hours of coding in that two weeks (versus, e.g., collecting and entering documentation like you'd have to do anyway if you used a third party service)? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Who gave him a grant? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I wish there was a way to split test my life. Today, in particular, I would like to meet the version of me who didn't try to vibe code an Arduino project and has now spent several hours thinking I was just one more chat query away from satisfaction. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Well, yeah. Duh. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding https://image.nostr.build/922fded3a7381b0c42adc2a3a5b8c6cc8bfa369d30ca759e5b9410d9fa12723f.jpg npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Thanks. I wondered if it was something like that. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I've not been on hiatus but I'm guessing this is some Twitter drama, so I also don't know what's going on. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I've spent way more than that on home contractors who had similar or worse literacy problems, and I've generally been happy. A top evaluation criteria for me is the insightfulness and forethought of the questions someone asks. If they're actively thinking about potential problems, I wouldn't care much about their literacy. If they're just just telling you "ok boss", I wouldn't hire them even if they had a PhD. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I think it's an advantage of BIP93 that it doesn't use a natural language encoding, as bech32 discourages people from trying to rely on memorization, but I figure someone will eventually make a transliteration scheme and it might as well be someone competent. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I would like help, yes, but not personalized help. I'd like a document I can read or a button I can push in Amthest or a set of term I can query an LLM about or something else along those lines. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Congrats to everyone who figured it out. Too bad that doesn't include me. No worries though, probably my lack of relay configuration means that nobody will see this message so Amethyst's upgrade will look like a success due to survivorship bias. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding If the text you send is useful, why should anyone care who wrote it? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What is a community? (I had the bug in the old version, so I guess I don't have a community. Now I have FOMO.) npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Cops just evicted everyone from the surf beach in Hilo. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding https://image.nostr.build/539db51984501e39c6d4e510f60d881e95ea39d9ddbe784dd2d97c676fd52662.jpg npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding In the back, your odds of surviving a flight stay go from 0.9999998 to 0.9999999 but your odds of getting off the plane within 5 minutes of arriving at the terminal go from 0.99 to 0.05. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I'm the photographer. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What did I say that you're debating? I'm guessing it was something about JM being serverless or P2P? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Can't tellwhether this is an allusion to scifi or ancient fortifications. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding No, I'm talking about his Tunable Penalty Protocol. My summary here with links: https://bitcoinops.org/en/newsletters/2023/03/29/#preventing-stranded-capital-with-multiparty-channels-and-channel-factories npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Why not use BIPs? What's the value of standardizing them elsewhere? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding How does it compare to John Law's factory designs that also don't require soft forks? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding If Bitcoin is successful, that will have to happen eventually. There's only 300,000 sats per person in the world (less than that if we assume some BTC have been lost). People have already tried to address that perceived insufficiency through things like millisats. When we fix it at the consensus layer, which will practically require a hard fork, it would be nice to address the problem forever by allowing arbitrary precision, e.g. allowing output amounts to be defined as a fraction of MAX_MONEY. If that happens, the idea of base units goes away npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Doesn't changing it once imply that it might be changed again? I don't want to spend the rest of my life listening to people arguing back and forth about whether it's time to redefine the basis again---that doesn't seem very clean to me. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Additionally to the other responses in this thread, an increasing amount of Bitcoin P2P traffic should be encrypted, which makes it harder to analyze with network tcpdump style tools. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Other nodes will continue following the most PoW valid chain but old Knots will reject that chain and instead accept backdated blocks on a lower PoW chain. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding The logic of that function seems pretty weird. Why use nTime instead of system time? Why reject blocks instead of shutting down (or simply nagging the user)? The way it's designed seems possible to abuse, whereas other easy choices would have much lower risk of problems. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Thank you to everyone on nostr who has been patiently explaining the technical reasoning behind considering increasing or removing Bitcoin Core's default OP_RETURN size limit. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Pretty sure LND uses it for both simple taproot channels and the latest version of their swap service, Lightning Loop. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding When I first started writing Bitcoin documentation, I asked my mentor at the time (Mike Hearn) whether merkle trees were important to understand. 🤦♂️ npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Mine has an odometer, so technically it tracks me. But it has no network access, so I doubt it's reporting on me. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Tl;dr, but an AI would read it, so I guess they're winning. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding No, when you buy something for $100, the merchant only receives $95 to $99. The bank keeps the difference. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding @nprofile…mh4h saw a post by you on Twitter talking about how credit cards don't charge for loans unless repayment is late so why should Bitcoin loan orgs? But CCs do charge 1-5% to the seller for the initial ~30 day loan period, which is equivalent to a 13% to 80% APR if you were to compound that period 12x in a year. That's about the same rate as Bitcoin loans. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Also, wherever there's an argument, there's certain to be somebody linking to allegedly relevant material buried deep in a Twitter thread. 💩 npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding The hardest Optech newsletters to write are those where we summarize unresolved disagreements, e.g. for or against CTV+CSFS. When everyone ends up in agreement, at least mostly, we can skip describing any arguments and jump to the conclusion. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Instead of having to whitelist people, you could probably have a simple naive Bayesian classifier in your client that you train on the type of comments you don't like. It would hide future similar comments in the future, with you able to tweak the threshold as your mood changed (e.g., you could risk seeing more junk on a day where you were bored). You could still whitelist your friends so they would pass through the filter. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Yrah, but there's no social aspect to Twitter muting. What you described (as I understood it) is Alice's client influencing which posts Bob sees. In that case, once one person we like violates the protocol, it incentivizes other people in the social group to violate the protocol, quickly rendering it moot. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Opt in ignoring in a social contexts always eventually degrades to nobody opting in. Imagine you have Alice and Bob, who like each other, and Unlikable Urkle. Alice initially ignores Urkle but Bob replies to one of his comments, stoking her curiosity, so she unignores him. This is why /ignore on IRC and similar systems don't work. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What crucial role do they play? (Honest question.) For content creators, I think it's probably better to convert readers into subscribers (e.g. BOLT12 recurring invoices), in the patreon model. For content consumers, the patronage model is also probably better at intelligently funding the kind of stuff that's good for you rather than a dopaminergic ad hoc process of zapping. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Re: not using LNURL, it's mainly because I don't like hosting dynamic website code. It requires installing stuff on a server (requiring either a dedicated server or taking a risk with other stuff on the same server), breaks often in my experience, and is just not what I want to spend my time on. BIP353 looks promising because I'll just be able add a field to my existing DNS. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Agreed about the possible use cases. And I also realize that I probably oversimplified things in my previous post. A normal part of my conversations, which are maybe not normal conversations for other people 😜, is suggesting that we make small wagers when we disagree about something easily provable either now or in the near future (my wife and I even use a website, fatebook.io , that let's us collaborate on questions and compare our Brier scores). Zaps would be great for resolving those small bets, rather than having to email LN invoices around like I did for https://x.com/jxpcsnmz/status/1839444666988757306 npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Totally agree that there are a bunch of confounding variables that limit correlation. However, I think every other proxy we've had for personal key management has failed to achieve popular use: PGP, personal browser certificates, years of DID attempts, etc. So the default assumption at this point might need to be that everyday people can't or won't manage their own keys. Accepting that assumption would have a significant effect on either _how_ we build Bitcoin software or _who_ we build it for. If, instead, we want to continue to build for an anticipated highly self custodied future, it would be really nice to have Nostr to point to as a counterexample of lots of typical people controlling their own keys. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding AFAIK, zapping currently requires using LNURL, and I'm not interested in either self hosting that infrastructure or outsourcing it. When BOLT12 zapping (perhaps through BIP353 addresses) becomes a thing, I may set it up. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Controlling your own key on Bitcoin comes with significant costs, from the cost to create a UTXO, to the eventual cost to spend it, to the potentially high cost of losing your key and the money associated with it. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding No, but I take a cheap unflavored nicotine lozenge each time I ride my indoor bike rollers for habit reinforcement. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I've [thought](https://github.com/jamesob/assumeutxo-docs/blob/master/proposal/feedback-david-harding.txt#L172 ) since the start that the background validation added a lot of complication for not much benefit (maybe even negative benefit). It seems to me like it would be a lot simpler to just allow loading a UTXO snapshot or sync from genesis but not try to do both. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Hawaii residents unaffected npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding After much hand wringing and signing of forms, I was allowed to "withdraw" it as cash (no cash was actually touched) and made a cash "deposit" into the escrow account. Honestly scares me to be performing ad hoc rituals with a big chunk of our savings. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding You would not believe how normie this situation is. My wife and I are buying a home and the escrow company required the final deposit to be made by wire transfer. However, I use the same local bank as the escrow company and they don't allow internal wires. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I fucking hate dealing with banks. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Congrats on the new podcast! npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding The Wire npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Giving it a try now, thanks! npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What's the best non-custodial Lightning wallet for Android for a U.S.-based user? I love Phoenix but they withdrew from the U.S. and it's time for me to move on. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Didn't watch the video, but if replacing a referral code is wire fraud for depriving a content creator of money, then deleting a code is also fraud, which seems to imply that I, as an individual, can't edit out a referral code from a URL I receive. I think referral codes are a sales device and there's no guarantee that just because one sales person put in the effort of convincing a person to buy, it's still allowed for that person to buy from someone offering a cheaper price (which is what I gather Honey did by finding coupons). npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I think this has been the most influential piece of Szabo's on my thinking about Bitcoin, LN, and related tech. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding For Mastering Bitcoin, the publisher wanted to go with Bitcoin-the-network and bitcoin-the-currency. I was fine with that, as its what I normally used, but I discovered when working with the non-Bitcoiner editor and proofreaders that they had a hard time guessing which was which. I got a lot of queries about whether I really meant to use caps (or vice versa for lowercase), especially since I did occasionally use the wrong case. Next time I work with normies, I'll probably ask to just use common noun casing throughout. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding So you save 50 kb on the query but may receive a response that's bloated by potentially more than 50 kb of unwanted data? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Isn't that 0.01% error rate over the total number of public keys in the set? E.g. if I follow 1,000 out of the 1 million publeys on nostr, I'll get guaranteed updates from my 1k follows plus updates from about 100 random people (1e6 x 0.0001)? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Yeah, 1 kg/day in modern times to maintain weight and full fitness sounds right to me. In prehistoric times, the average human was significantly shorter (so lower BMI) and the body will down regulate calorie burn as it enters starvation, so I guessed the minimum requirement during a prehistoric famine was about half, i e. 0.5 kg. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding How will vbytes and varops interact? There were a lot of problems when we had both bytes and sigops, e.g. invalid block templates. Now, in taproot, we size transactions as max(vbytes, sigops*50 - 50). Which model will varops use? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding No, but it might be useful to track overall address reuse, e.g. what percentage of total BTC supply is in output scripts that have been spent from before. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Yeah, I'll put that on my todo list. Gonna need a bigger home server closet. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I don't understand why I've haven't been able to buy a router in the past decade that just works well continuously and supports more than 4 clients. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Re: testnet drama. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Suggestions: npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding VanEck also donating: https://www.google.com/amp/s/www.coindesk.com/business/2024/01/05/vaneck-to-donate-5-of-profits-from-btc-etf-to-bitcoin-core-developers/amp/ npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Usually I don't find generative AI useful for writing @npub1hku…432p newsletters. I often don't start out fully understanding the ideas we cover and so I can't tell if what the AI writes is accurate or nonsense. Writing it myself forces me to really think about it, and I can just keep iterating on my draft until it feels accurate (and then it gets peer reviewed). npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-April/020242.html npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding There's a history of discussion and implementation here: https://bitcoinops.org/en/topics/anchor-outputs/ npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I hope so. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Chapter 10 of Mastering Bitcoin (3rd edition) has now been sent to my editor. This chapter is about the P2P network. Major additions include BIP152 compact block relay and BIP157/8 compact block filters. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Just tried Bard and there was misinformation in every answer it gave me. ChatGPT gets lots of stuff wrong too, but I think Bard is about an order of magnitude worse. Unless my anecdotal experience is non-typical, I'm amazed Google is encouraging people to use this thing.---it just makes me think that Google is losing it. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Left a reply about what I think might be the issue: https://github.com/JoinMarket-Org/joinmarket-clientserver/issues/1465#issuecomment-1546706665 npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding Status update #2 on Mastering Bitcoin, 3rd edition: I sent my editor the first draft of Chapter 9 about transaction fees. This chapter consists of 90% new material. It describes the basic principles of Bitcoin's fee (block space) market, fee estimation, fee bumping (both CPFP and RBF, with a infobox about opt-in RBF vs full RBF), transaction pinning, CPFP carve out, and package relay. Sections from the previous edition's Transactions chapter about fees being implicit in a transaction and (anti) fee sniping are moved to this chapter. npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding It depends a lot on the threat model. Let's consider two scenarios: npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I disagree about there not being any privacy benefit. Every Wasabi instance that's paired with a local node performs exactly the same non-coinjoin/non-broadcasting network operations, making it impossible to use network activity to determine which instance received which transaction outputs. (This is called information theoretic perfect privacy.) npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding What's anti-klepto? npub1syluunzwwmc70d85d9alzqc2jrc6pdur7xrax2vqpfxas6tljavsa46ksu David A. Harding I had the same thought when reading that book, although I rather enjoyed the rest. But during the Money chapter, I was thinking, "nah, I like Szabo's theory way better".
