melvincarvalho
Melvin Carvalho

https://melvincarvalho.com/

Mathematician and Web Developer

Public Key

npub1melv683fw6n2mvhl5h6dhqd8mqfv3wmxnz4qph83ua4dk4006ezsrt5c24

NIP-05 Address

_@melvincarvalho.com

NIP-57 Address

melvincarvalho@btip.nl

Profile Code

nprofile1qqsdulkdrc5hdf4dktl6taxmsxnasykghdnf32sqmnc7w6km2hhav3gppamhxue69uhkummnw3ezumt0d5q3gamnwvaz7tmjv4kxz7fwv3sk6atn9e5k75rfxn9

Publishing to

nostr.mom

relay.damus.io

Author Public Key

npub1melv683fw6n2mvhl5h6dhqd8mqfv3wmxnz4qph83ua4dk4006ezsrt5c24

Show more details

Last Notes

2025-05-12 20:24:57

Just scored 11 points in Nostr Snake! 🐍⚡ #NostrSnakeScore Play at https://NostrSnake.fun

2025-05-07 20:50:13

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What would Satoshi say?
https://media.ditto.pub/4dda10870cea8a4a9ac7e7f903b8b48bf0cd6ebab2f331488119c23e2ae05809.png

2025-05-07 10:55:19

Satoshi knew
https://media.ditto.pub/264eda033a6334cbfadbdea10b5a0d7d023129c7588f75866fb106d70c1d37db.png

2025-05-06 09:37:56

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With taproot, the Nostr + Bitcoin stack is effectively Turing‑complete and comes with an instant social graph. In theory it can do everything Ethereum promised—but the truth is, there hasn’t been much demand for on‑chain computation once you strip away token speculation.
Ethereum’s launch seeded a large insider premine while branding itself “decentralised like Bitcoin.” That skewed foundation is a bit like charging eternal royalties on a proprietary database: every layer built on top inherits the tilt. No surprise many apps devolved into pump‑and‑dump schemes.
Bitcoin / Nostr give us a shot at building on a non‑rigged base layer: a genuine free market. Of course, entrenched players prefer systems they can bend. The real contest isn’t technical capability—it’s whether we’re willing to choose open rules over rigged ones.
So far rigged markets dominate.

2025-05-04 21:46:33

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#mindstr explain The Gnostic Empire Strikes Back
https://media.ditto.pub/bafacafdf87987c69b5db29d650d0653af26e3b67d16f81cfa8d54b96084e67c.png

2025-05-03 17:44:15

From 2 years ago:
"I think it's unlikely that Bitcoin Core is going to make any changes in regards to OP_RETURN"
https://github.com/bitcoin/bitcoin/pull/28130

2025-05-01 14:54:58

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Steve Jobs said, “Make something 10% simpler and you double the adoption.”
Bitcoin works well enough—even with spam attacks. But making things easier can bring unintended consequences.

2025-05-01 14:36:03

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Agree. I did attempt to jump on the DVM band waggon a few times. But I found it too complex in the end. A simple machine to machine system that has nostr and lightning in the mix, I'm all for, though!

2025-05-01 05:54:20

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https://tarotask.com/TheEmpress.mp4

2025-05-01 05:48:26

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Terence McKenna said an interesting one about what would it look like when giving birth to a new civilization. He said that if an alien were to see a birth for the first time he would think that the host is dying. But actually something new is coming forth.

2025-04-30 17:24:45

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You are correct. NACK means against.

2025-04-29 14:35:48

#mindstr what's the OP_RETURN debate about?
https://media.ditto.pub/7b1002fc20944e7e923a9c9c322f49f6b7cefdbecda07becc22b3ee8b89c611e.png

2025-04-29 10:43:56

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I'll see if i can extract it from this silo
https://www.slideshare.net/slideshow/duality-an-excerpt-satoshi-nakamoto/103964662

2025-04-29 09:56:05

The pubkey is the domain. An idea whose time has come. Note: you can already do this with did-nostr. I do it all the time. But if you want bittorrent style censorship-resistance, use #pubky too!
#nevent1q…zu06

2025-04-28 08:45:07

#mindstr thinking
https://video.nostr.build/2f46438f3c38e3054ccdd7f9ba35436069deca59c60e2821d9a5a8557863e7db.mp4

2025-04-28 07:39:44

#vibecoding
https://media.ditto.pub/1df4246d82338341b56625b46e061c5ce13a5a3506a9be3f6a96d1b08e9fcecc.png

2025-04-28 06:17:47

Pickle RIck in 3... 2... 1...
#nevent1q…dr4q

2025-04-26 08:25:28

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The bigger picture is that the web is awesome, but we can make it even better. And nostr is a tiny innovative part of the web that makes it better. Block tried to innovate with web5 but it was tough to make progress with a difficulat complex stack, so they stopped the initiative. I think most have got new jobs now, though technically the project is still there. Nostr is good, but doesnt scale, and there are some barriers. I've been working on a solution to this called did-nostr which fixes most of the problems with web5, and is now starting to work. Hopefully the benefits will reach more users over time, esp. in the broader web eco system.

2025-04-26 07:39:28

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Definitely true.
https://media.ditto.pub/7207ebc423b68de9159e227cdd6d4ac4d049c5042bdfcb0e38a26bbad1719de3.png

2025-04-25 16:10:28

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Thank you! Please share the link.

2025-04-24 21:48:44

A gentle reminder that Nostr's censorship resistance is only as strong as the infrastructure it rides on — and DNS is often the weakest link.
If an ISP or host sees activity that raises flags (rightly or wrongly), they can and do take relays offline. Vultr and DigitalOcean are actually among the more lenient providers, which makes such takedowns noteworthy.
For stronger resistance, you might want to look at #pubky, which takes a more torrent-like approach without relying on DNS. Also, @nprofile…uw6r has been exploring nostr-next, where relay pubkeys are their identities — a step toward deeper decentralization. And did-nostr is growing into a way to discover relays and agents purely via pubkeys.
So just a heads up — if you're running anything that even smells "suspicious," relying on DNS or traditional VPS hosts can quickly become a game of whack-a-mole.
#nevent1q…4z3d

2025-04-24 09:06:51

Great article from @nprofile…j0zv on how Bitcoin can go far beyond just payments—and how #pubky enables truly censorship-resistant systems.
The best part? With did-nostr, every Nostr user gets these features for free, on top of everything Nostr already offers. It's the best of both worlds.
Next-gen clients built with did-nostr, pubky, and #agenticnostr are going to change everything.
https://medium.com/pubky/the-atomic-economy-reclaiming-society-from-the-inside-out-574504dfe326

2025-04-23 13:56:45

Getting there ... Trading digital assets over nostr and bitcoin. But will be more fun when you can trade Agents.
https://media.ditto.pub/a5a18218ed1a34b2ca3a5289b449882d8841dea5d52e40c941c71ee809fe7b6d.png

2025-04-17 14:57:51

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No, it's native to bitcoin and nostr. But it uses similar tools.

2025-04-17 08:12:11

Market is almost there. Final step is trading with cryptographic proof.
https://media.ditto.pub/05d1c24d28af07f1ceb80e486983040cdf8b752d0535c2a58da52a4fc6182603.png

2025-04-16 10:54:00

You are free, to do as we tell you
https://media.ditto.pub/c92c270a42dc64f660d5101bf486ed052137bde4ad54ebf4b97ed1e6356d094b.png

2025-04-15 16:44:07

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you wrote this? https://thesimplestbitcoinbook.net/

2025-04-15 16:42:12

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Absolutely. But it will occur at another layer. So it will be a free market. You will need a web of trust on top of it. But when the base layer is rigged, no amount of higher level regs will fix it.

2025-04-15 07:32:46

Once you create a #nostr NFT, the first step is to tie it to a UTXO. This is done by tweaking your npub by the, the NFT JSON hash. What could be easier?
https://media.ditto.pub/e9cd6435b9a11914dc49bfd7d44173931e8449202f121f9fa0e76cdd05c263a5.png

2025-04-09 12:35:24

In the beginning, Bitcoin used IRC to seed connections to its network. It later moved to DNS seeds, a pattern many P2P networks still follow today.
With the advent of DID Nostr and the Nostr relay network, you can now bootstrap any P2P system that uses public/private keys—just by pointing to a Relay Set. You only need a single relay that hosts your public key, and you're ready to go.
From the relay, you fetch the DID document. From the DID document, you get all the services. You're not tied to DNS, to any single network, or any centralized infrastructure.
This means: **global bootstrapping for P2P networks**—built in, for free. And that's just one of dozens of use cases enabled by #didnostr.
Try it out:
npx did-nostr-resolver create <pubkey>
What comes next?
- Personal storage
- Taproot Wallets
- Consistent profiles
- Git without GitHub
- Smart Commerce
- BitTorrent mainline integration for true censorship-resistance
The sky's the limit. And it scales OOMs more than the current nostr network. Once NIP-05 providers upgrade to support this (maybe even offering it as a paid service), users will gain a premium Nostr identity —portable, extensible, and capable of so much more.

2025-04-09 01:06:51

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Bluesky added a couple OOMs of scaling, with DIDs and PDS. Worth studying!

2025-04-08 23:33:09

https://media.ditto.pub/99b6ad93a8c04eb6c0653e684e184af387dc71c4743ebba95c6aa44885f79bd0.mp4

2025-04-08 21:36:38

4 word seed phrases should be enough for $10 wallets
If your wallet grows 10x larger, you have to remember an extra word

2025-04-08 21:05:03

The first use case of did-nostr will be like a decentralized DNS for nostr, and nostr services. Discover Relays, Storages and other stuff, without a central point of failure. Many more services, and use cases will follow as demand rises. But it is already working today, and that's a good start!

2025-04-06 01:59:31

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yes, exactly, needs to be executable with a runtime, for example javascript

2025-04-06 00:27:23

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Yep, been working on this for about 6 years. Nostr is part of the pipeline to get agents to execute, update etc.
We all had our little use cases at the time of building nostr.

2025-04-06 00:10:58

First sign of independent developers implementing #didnostr ... love to see it!
https://media.ditto.pub/132d950f8f801ece08ffb7ffe897ef4929f444a1a85f434ba3083326e981d2a7.png

2025-04-06 00:04:33

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Yeah he's a moron. Hugely pushed by the algorithm. Tells people how to get rich like he is. Thinks inflation increases GDP. Dont know his views on divisibility of pizza, but that is probably guessable.

2025-04-05 22:20:52

deepseek = best model, good, cheap
llama = boomer model, good, cheap
claude = coders with bloat, good, inexpensive
xai = karen tech, expensive, privacy invasive
openai = office tech, very expensive, privacy invasive
gemini = google tech, good, price unkown, privacy invasive
I would stick with deepseek and llama for Open projects, and some claude for coding. Of course, everything will change in a month.

2025-04-05 21:50:45

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both
https://nostrcg.github.io/did-nostr/

2025-04-05 21:46:36

Open Source llama 4 model is now 100x-300x cheaper than the commercial commercial closed offerings, for equal, if not better quality.
And deepseek R2 will drop this month.
The future is open!

2025-04-05 19:59:40

Maverick and Goose!
Llama 4 Maverick:
- 17B active parameters, 128 experts, 400B total.
- 1M token context window.
- Not single-GPU; runs on one H100 DGX host or can be distributed for greater efficiency.
- Outperforms GPT-4o and Gemini 2.0 Flash on coding, reasoning, and multilingual tests at a competitive cost.
- Maintains strong image understanding and grounded reasoning ability.

2025-04-05 15:11:25

Midjourney v7 rocks
https://media.ditto.pub/f4a65592a0d65c3499fb2d17ea6b84b465d391e2da91520283758f4f0f633737.mp4

2025-04-05 14:37:37

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Happened to me twice too. I still like lightning, but, on-chain "Just works".

2025-04-05 13:36:01

https://media.ditto.pub/0dc9cbdaad8dafbe0ec230bcf33114868540168fcc01248987055663da6eaef3.png

2025-04-03 17:19:45

https://media.ditto.pub/bc7c9f6b858393f2435e99a31b00277138486a1982af4a52a0de313c27881545.png

2025-04-03 14:02:49

Elephant
https://media.ditto.pub/396b42d77e78296c0267694a1b29857d5b160acea9e8b01519a8976862095d69.mp4

2025-04-03 13:51:48

dragon
https://media.ditto.pub/c0da9a00cb2f7e493ce185f3e20093f37dac35f2d525e92c44f72aab9aef908e.mp4

2025-04-03 12:02:34

“Their bodies were gathered and buried in this mass grave,” Whittall added. “We’re digging them out with uniforms, with their gloves on. They were here to save lives. Instead, they ended up in a mass grave.”
#nevent1q…ukhp

2025-04-03 11:53:05

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awesome, thanks!

2025-04-03 11:36:50

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Lightning is one of many scaling solutions. Each L2/3/4... involves a trade-off between trust / throuhput / privacy.
Only 1% of bitcoin scaling solutions is currently explored.

2025-04-03 11:33:26

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"Make something 10% simpler, and you double the adoption." -- Steve Jobs

2025-04-03 10:48:33

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2 of the best devs in nostr working together. Love to see this! What I'd love even more is if chachi could do login like jumble.

2025-04-02 13:02:27

To run a world class nostr client in 4 lines of code:
git clone https://github.com/CodyTseng/jumble.git
cd jumble
npm i
npm run dev

2025-04-02 12:03:10

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Give a filter to a relay?
"Messages are streamed in a for-loop when calling .req(). This method returns an async generator that yields NIP-01 messages from the relay. Breaking out of the loop closes the subscription automatically."
https://nostrify.dev/relay/

2025-04-02 10:26:26

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Yes, that's basically what ActivityPub does with the same technology (JSON-LD)

2025-04-02 08:37:16

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In retrospect, if we'd used did-nostr instead of NIP-05, it would have been a great point of extensibility.

2025-04-02 08:25:42

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I've not had any pushback. Shown it to some big NIP-05 providers and they think it's epic.

2025-04-02 08:08:57

What Does did-nostr Do?
did-nostr is a DID method that brings decentralized identity to Nostr. It lets you attach useful metadata and service endpoints to your Nostr public key, turning it into a portable identity hub.
Instead of just being a key that signs events, your Nostr pubkey becomes a rich identifier that can point to relays, profiles, storage, Bitcoin wallets, and much more.
https://dev.to/melvincarvalho/what-does-did-nostr-do-2o68

2025-04-01 16:29:43

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roztomila

2025-04-01 11:48:40

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It's the only one that lets you log in with your nostr private key. So that tells me it's doing something right. I run a mirror now, and have replaced branle after 4 years.
https://nostr.rocks/

2025-04-01 11:03:34

The JFK files need more attention
https://x.com/MikeBenzCyber/status/1904494284872540256

2025-03-31 19:26:20

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💯 and the use case where you work and get paid in bitcoin (only)
This can be as simple a getting points in a game. Or timestamping important things in the time chain.
It doesnt have to be easy, it just has to be fun!

2025-03-31 18:55:18

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No, I dont think so. Taproot is already merged, so nothing to split. Bitcoin already runs taproot. A new fork, yes, has the danger of a chain split, so is not desirable. Taproot is already there, we just need to use it.

2025-03-31 18:38:24

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As the first DAU on #nostr, this makes me lol 🤣
I fully expect to the last DAU on nostr too...

2025-03-31 18:34:40

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Taproot fixes this. We can build an entire free market on top of Bitcoin — and that’s just Layer 1. Payments are only the first use case.
Imagine everything you built at Twitter and at Block, but recorded on a timechain to prevent double-spending. You can go multiple layers deep, and each layer still outperforms the current fiat system.
Now think about what this unlocks for Cash App: by adding first truly non-rigged free market.
And the best part? npubs and Taproot addresses are fundamentally the same — just different prefixes. The social layer is already in place.
We just need to study Taproot and start using it.

2025-03-31 18:27:55

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I tried it last week. The mobile client is solid but still a bit glitchy — about on par with Nostr mobile, in my experience. I’d expect a public release in June once they’ve ironed out the bugs.
As for Nostr’s censorship-resistance claims — they’re pretty weak. When real Bitcoin-level censorship resistance was on the table, there wasn’t much interest. The focus seems to be on building a Twitter clone, which makes sense given that most of the ecosystem is funded by Twitter’s founder.

2025-03-31 18:14:02

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#pubky is like your npub with DNS. So from your public key, you go to the bittorrent network and run a query, then you get out a DNS record. So instead of domain_tld you have pubky to create a decentralized web. It can also store files, run relays, serve media and do all the things the web can currently do (including nostr).

2025-03-31 18:03:37

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You can use did:plc, did:nostr, or even both together. I was one of the original contributors to the DID work — my name is on the spec. I've discussed the topic with fiatjaf many times, and frankly, he doesn't seem to understand it beyond repeating “it's a scam.”
While I’m no fan of where DIDs have ended up — and I think they’re not as decentralized as originally promised — they’re still a significant improvement over anything that’s come out of the NIPs so far. Imperfect, yes, but a step forward.
I'll likely tweak it further based on what we've learned:
https://nostrcg.github.io/did-nostr/

2025-03-31 17:53:20

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https://media.ditto.pub/4ef8f2e73c3c9120850ffe8bfc61631938131e84efe1223282ec332baee3b0a9.mp4

2025-03-31 15:27:57

A Great Book!
#nevent1q…vjn8
https://media.ditto.pub/389909b1915a2dc94dc1749ab7b271eb35374e938c0bbaeacf1d5c7eb4d7101b.png

2025-03-31 12:04:06

#agenticnostr helps here: Sir Tim Berners-Lee on Building AI That Benefits Everyone
https://www.inrupt.com/blog/the-webs-inventor-on-building-ai-that-benefits-everyone

2025-03-31 09:02:01

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Sure we have a massively deployed standard called Linked Data, which ATProto basically tried to reinvent. Linked Data powers not only activitypub, but also schema.org which is used on many billions of pages and many millions of websites. There may be some bespoke features that lexicons offer that are useful, but we can just take those and add them, if they are identified.

2025-03-31 07:58:54

“I hope Nostr becomes more like #pubkey” — what does that mean?
It means that every Nostr identity (every npub) could have its own domain, its own storage, even its own relay.
Even better, it could become censorship-resistant in the way Bitcoin or BitTorrent are. Right now, Nostr is only resistant to DNS-based censorship—meaning it's still vulnerable to takedowns as it grows.
Currently, most developers prefer the DNS-only model. But it wouldn’t take much to level up Nostr’s censorship resistance to match Bitcoin or BitTorrent, as #pubky have done.
#nevent1q…nv05

2025-03-31 07:53:32

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It would be super easy for a nostr client to support pubkey. Noskey does already
https://github.com/melvincarvalho/noskey/
https://media.ditto.pub/769cd6c4851a2726c229c7cf8c8f0ea034f25b6a5797b389808a15db4ef123d0.png

2025-03-31 07:25:52

On interoperability—this is what made the web so big. It didn’t just invent HTML; it embraced email, PDFs, FTP, IRC—systems it didn’t control. Anything useful it could connect to was added to its growth path. Today, you can link to a PDF and it just works—even though the web didn’t create PDF viewers.
When I spoke with Tim Berners-Lee, inventor of the web, and mentioned Nostr, his first question was, “What’s Nostr?” After I explained, his response was: “Let’s make my web OS interoperable with it.” That’s already been merged.
In contrast, when I once suggested to fiatjaf that the wider web might want to use Nostr, he replied: “I hope they never use it.”
Interoperability isn’t just about protocols talking to themselves—it’s about acknowledging that other systems exist, and figuring out how to work with them. That’s how the web won.
#nevent1q…z6e6

2025-03-31 06:56:27

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Awesome! For bonus points, buy yourself a domain and then alias a CNAME to a subdomain.

2025-03-30 23:35:10

A github star is a more effective intervention than a vote in a national election. And it is quicker to do. If people were taught this, and the principle of why that is, we would be living in a different world, where internecine institutions are made irrelevant.
#nevent1q…cfqv

2025-03-30 23:07:26

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They might!

2025-03-30 23:06:45

“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.”

2025-03-30 23:05:58

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Looks like voting is a lose-lose. (oh yeah i forgot it's mandatory -- scam!)
c) “You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.”

2025-03-30 23:02:39

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Dead easy to do. We actually programmed the first of these back in 2007 with single sign-on for the web. Later other things came along like oauth, openid, xauth and so on. One click login was popular with users.

2025-03-30 22:56:03

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Good luck on your journey. You will be ahead of most quite quickly, if you do a little bit each day, and dont get discouraged. One tip I will give you is not to let code bases get to big, because the they become harder to change. Get an app into a state that works. Then make the next one based on what you're learnt. Rinse. Repeat Best of luck!

2025-03-30 22:52:35

The reason that consistent profiles in nostr is important, is that zaps dont work without them. Say you have your profile overwritten, or you are rugged, and have to move your lnprovider (both have happened to me multiple times) then setting up a new provider is not an easy process, if you use multiple apps. I am more technical than most but my zaps have not been working well for over a year, and i rarely even click the zap any more, and zaps that I kindly get I dont always get to see who from. While some devs think that inconsistent profiles are a feature of decentralizaion, not a bug, I say we can and should fix it. One advantage did-nostr could offer would be to have a consistent profile that is up-to-date and discoverable by clients. We'd have to get clients to buy in to it, but clients that offer more consistent profiles could out compete those that dont.

2025-03-30 22:38:42

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Note: technically speaking your identity in nostr is your pubky / privkey. Npub is for display purposes only, and in fact it has a bug of putting the segwit suffix on the taproot prefix. pubkey is canonical and will be your identity forever.

2025-03-30 22:37:23

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Well done! Next step: publish it to a URL

2025-03-30 22:30:58

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Have you seen this? You have Type instead of kinds, and is standards compliant:
https://w3id.org/nostr

2025-03-30 15:44:40

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The best things in nostr dont always get used

2025-03-30 15:42:40

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Lexicons are impossible to do via the NIPs. That is because it is not allowed two ways to do the same thing. So, the first idea to do something is set in stone. And there's various other ways to do the equivalent of a lexicon.
However did-nostr already uses linked data schemas (like schema.org) which is a global standard (lexicons aren't), so we could build the equivalent if we can figure out the requirements.

2025-03-30 15:37:47

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I totally agree that torrents w/ nostr is a BIG opportunity, in terms of impact.

2025-03-30 14:54:49

Honestly, I was never a fan of Bluesky’s approach to identity with DIDs. I always felt that, with a clean slate, we could’ve built something much better on Nostr—but that opportunity never really materialized.
Given that, the next best path was to bring Nostr’s identity system up to parity with Bluesky’s, which is what we’ve aimed to do with did-nostr. In fact, there are a few aspects I believe will end up being better than Bluesky’s did:plc.
Of course, it’s going to take significant investment and a solid growth strategy to compete with Bluesky. But at least when it comes to identity, Nostr is now in a position where it has feature parity.
https://nostrcg.github.io/did-nostr/
#nevent1q…62sw

2025-03-30 14:44:11

This is a great list. Hopefully, did-nostr will be a step toward greater interoperability with the rest of the web:
https://nostrcg.github.io/did-nostr/
#nevent1q…z6e6

2025-03-30 14:13:19

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Nice points. I dont think anyone is 5/5 yet.

2025-03-30 13:43:58

If we were to add the latest timestamp to nostr-did, and ensure it is not overwritten by an older timestamp, it would be possible to solve the consistent profile, and buggy following UX in nostr. NIP-05 providers could simply point to a DID and update it on the server, or allow the user to update it via NIP-98. Some providers would offer it as a paid service, others offer it for free.
https://nostrcg.github.io/did-nostr/

2025-03-30 13:26:53

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What you describe commonly known as "bike shedding"
Yes, nostr+torrents are definitely something we should so more of.
https://dtan.xyz/
But that work probably needs to be funded to get anywhere, in the current environment

2025-03-30 13:06:57

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You've given me an idea. Let me write something up.

2025-03-30 12:57:31

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It is 80% of the solution. That doesnt work because it can be gamed by going back in time and reversing the acknowledgement. To prevent it from being gamed, and hence tradable, it would need to be recorded in the block chain.

2025-03-30 12:35:42

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Yes exactly. A nostr account can represent anything. Person, music, art, goods, services.

2025-03-30 12:18:28

What if nostr accounts were tradable?

2025-03-30 12:00:15

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Working on an agent framework for nostr and bitcoin. I've not done a bridge to fiat or credit cards yet, but that's a great idea.