ismyhc

Building coolr.chat and Hollow a long form Nostr reader/publisher application.

Public Key

npub1ch8a4xxsru2jkdynmx27a4xdknv72k5h8yjld702y3mf5k3puauqmszh48

NIP-05 Address

Profile Code

nprofile1qqsvtn76nrgp79ftxjfan90w6nxmfk09t2tnjf0kl84zga56tgs7w7qpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0ds377v56

Publishing to

relay.damus.io

nos.lol

Author Public Key

npub1ch8a4xxsru2jkdynmx27a4xdknv72k5h8yjld702y3mf5k3puauqmszh48

Show more details

Last Notes

2026-02-24 19:58:01 UTC

👋 Hey everyone. I’m currently looking for a full time position. I’m senior level software developer. With 10 years experience in building iOS applications with Swift. I also have experience with Go and frontend frameworks like Svelte. Please reach out if you know of anything 🙏

2026-02-05 15:50:35 UTC

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Yeah not a fan of the object orientedness either but it’s a killer engine. It has an amazing UI framework built in. You can build games and apps with it quite easily. The api surface of GDScript is quite broad.
IMO it’s much more approachable than unity or unreal and it’s FOSS!

2026-02-05 15:44:19 UTC

Anyone here like Godot game engine? I’ve finally figured out how to write a C GDExtension which allows me to include libsecp256k1. I’m now working on a Nostr GDExtension. It currently builds for all platforms. macOS, Linux, Windows, iOS, Android and web! You can use directly from Godots GDScript.
I will make it available when I get it developed a bit further.
More work to do but am very excited for this. I have a cool multiplayer space mining game idea based on pow I plan to build with this. 😀
Stay tuned!

2025-12-14 16:05:51 UTC

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Not much of a web developer, but if I do web projects I reach for SvelteKit.

2025-10-23 01:24:37 UTC

Birthday dinner with the wife and family! 🙏
https://blossom.primal.net/07ea8b39bef88026d7a1081cd9eaf3622384d829accc9722c1dc4151adade331.jpg
https://blossom.primal.net/de53b04470b19629074c94e3793bdb5c2ff211875d262786437d44cfb1cb2720.jpg

2025-09-20 02:32:26 UTC

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Haters gonna hate I guess. 😎

2025-09-20 01:18:30 UTC

Everyone hating on Apple recently but I gotta say, just got the iPhone Air today and it’s an amazing device. Perfect size.

2025-09-19 18:03:51 UTC

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I tried Habla, but this is what I get when I try to write something. https://blossom.primal.net/b7069eb550f3e38cd48919431fb8e4b30e91c8e2e6adc87a0606808e5fa75f42.png
Anyways, Im a developer and wanted to build something so I got started. 😀

2025-09-19 17:58:21 UTC

Working on a long form reader/publisher application for nostr.
Progress so far https://blossom.primal.net/295ed98b1c448d01af58b83857413f99a80c5c123c7a10e611692c7e787a694b.png

2025-09-03 11:06:52 UTC

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Watched this yesterday. The host is my longtime friend. We worked at Microsoft together years ago. I’m actually having coffee with him next week. I’m going to introduce him to nostr. 🙏

2025-08-31 13:44:23 UTC

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😂 hopeful right?!

2025-08-31 13:37:27 UTC

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Right, but I could imagine unless you approve all the app could request many things you need to approve no? Anyways I’m not against this, it’s nice for someone who wants this level of security. However I don’t see normal everyday users wanting to be bothered with this. Mass adoption type people wouldn’t go for even this type of friction.

2025-08-31 13:11:52 UTC

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Gotcha. So so you basically whitelist certain signing different kinds per app. That would be a little smoother, however there’s still that initial interaction with amber I guess.

2025-08-31 01:04:45 UTC

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So people want to hop to another app every time they want to like something, post something, etc. seems like a nightmare for UX.
Imo. As long as the app you’re using is open source it’s quite easy to feel comfortable with the app storing your key as long as it’s done properly. For instance on iOS I would expect it to be stored in keychain properly.
I understand having an offline signer for something like your bitcoin keys.

2025-08-30 19:10:56 UTC

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I don’t think size of content really has an impact on nip13 pow.

2025-08-30 19:00:51 UTC

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I’m not sure what benefit this brings? Maybe these can used in addition to geohashes? I quite like geohashes.

2025-08-30 18:14:35 UTC

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Yeah I think the big question is. What delay when sending a message is acceptable for UX. I don’t have an Android so I can’t test it on bitchat, but will work on implementing this in coolr. My guess is that a second or so would be fine. Especially if there some animated visual that indicates something is happening. It’s also worth people to understand yoyll probably only see others messages that are using the same threshold or lower since I assume the client is blocking any messages that are not meeting your set threshold.

2025-08-30 16:08:24 UTC

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So once you set pow difficulty is that what you require on the client side to allow other messages coming in?

2025-08-30 16:05:44 UTC

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This is 🔥
This is gonna be in an update for coolr.chat too

2025-08-30 02:18:25 UTC

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9q has been on fire today!

2025-08-29 00:03:02 UTC

I have a cool update to Coolr. You can now chat in multiple geohash's at the same time!
Simply teleport to the geohash's you want chat in:
/t #9q,#21m,#br
Then you'll see the chats labeled with whatever geohash they are coming from. Then to chat in that geohash, just prefix your message like this:
#9q Whats up!?
It's also smart enough to connect to the closest relays for each geohash and only send the event to those.
Check it out!
https://blossom.primal.net/1bcc0578d5670a9c08988cb53ef7d4fbcc7638c3ccd212aff1b58e303479038c.png
https://coolr.chat

2025-08-27 23:57:58 UTC

One thing I’ve noticed is that a lot of bitchat users don’t seem to realize they are chatting over the internet.

2025-08-27 19:31:50 UTC

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Yes, for sure. Right now it only let's you put in a valid geohash, but I will open that up. For the sake of keeping things simple ill probably just keep using the kind 2000 though. Not sure. I need to think about it.

2025-08-27 19:22:22 UTC

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Not at the moment. Im wrestling with whether or not I should. I kinda feel like mine got steamrolled. lol.
It would be simple enough to add a section for them though.

2025-08-27 19:19:15 UTC

Bitchat users unite! I've just released the first build of my bitchat client. I ripped out a bunch of old code alot of the caching that was causing it to just get completely slow af.
Still more work to do, but I think it works pretty well now.
You can login with nostr extension, or just use an anon key. Built in spam filter which helps alot. Doesn't catch everything, but its a start.
Run the command /h to see a list of commands.
I still need to add in some basic things like formatting links, etc.
https://blossom.primal.net/a290c1f68cb7d7a3eff50578de6a78ea66e74dd9b1a57e7bea0ed9d17c2fad21.png
https://blossom.primal.net/37212340af695e7aa89378afacf5e6db009d64fdf44ab7aef2caa7da490d85bf.png
https://coolr.chat

2025-08-25 18:53:58 UTC

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Yeah the moment I showed this, it was likely damus's relay.. Getting hammered..
However, in my local build now i've switched over to the new strategy that bitchat uses where it grabs updated list of relays and picks the closest 5 based on the geohash the user has teleported too.

2025-08-25 17:09:21 UTC

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app im working on. Trying to tune my spam filter... Its a never ending battle... lol

2025-08-25 16:52:14 UTC

Spam out of control!
Heres a video of my spam detector. You can see the console message count going crazy... 😅 https://blossom.primal.net/15f8752e4ed3548ac8fb2d10da5d35641f7df646c7906ff321a0acc979a50f83.mp4

2025-08-23 18:58:04 UTC

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Does this mean that you’d have to make another release to update the list?
Also would this also cause users far away from each other to possibly not be able to chat with each other since they’d likely be on different relays?

2025-08-23 18:54:33 UTC

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Agreed. Outbox doesn’t fit the ephemeral chat model imo.

2025-08-23 13:54:12 UTC

Working on a re-write of coolr. Spam detection, /block and a bunch of other nice things!
Also massive performance improvements so coolr wont melt your computer. https://blossom.primal.net/90943802a793695011ab482272113ad7137587a087915a74932c15dda9c485c7.png
@nprofile…zj6n @nprofile…h36r

2025-08-22 23:28:11 UTC

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Interesting, but then it requires user to have wallet. Gotta not break the UX

2025-08-22 23:26:10 UTC

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Spammers have infiltrated! Thinking about maybe requiring pow events in my client. Not sure if it would work. It would have to not hinder the UX

2025-08-22 23:24:28 UTC

Spammers already flooding the chats. Might be worth requiring pow events. Not sure of that would stop them though. I’m afraid relays gonna start throttling ephemeral events.
@nprofile…ncmp @npub1sg6…f63m

2025-08-22 16:28:06 UTC

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This is awesome! Working on something similar! 😃
#nevent1q…l0yd

2025-08-22 16:25:08 UTC

coolr.chat is melting.....
@nprofile…zj6n @nprofile…h36r https://blossom.primal.net/99678a08920560c2b7e2e0198019813f5c8aac06864ff81afb0a681a8c814fbe.png

2025-08-22 12:25:22 UTC

@nprofile…2ln2 how's damus relay doing? Ephemeral messages having been flowing! 😱
@nprofile…zj6n

2025-08-22 11:21:29 UTC

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Oh wait @nprofile…x58v if you aren't seeing much traffic it's probably because bitchat uses kind 20000 rather than the kind 23333.
Tags are a bit different too.
kind 20000 uses a g tag for Geohash, n tag for nickname
Wish I would've pushed forward with that NIP now. Would've been cool it they used the same.

2025-08-22 11:18:42 UTC

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Well, Im digging into it. I think it's a couple of things. Number of messages/channels and there's a bunch of people how have bad nip05's and im not handling that gracefully and it just keeps trying to fetch at those bad url's and that's causing coolr to be laggy.
😅
I hadn't touched the code in months... Just happened to add some basic bitchat support yesterday. So, it needs some work.

2025-08-22 10:39:56 UTC

Oh shit. I left coolr.chat running overnight the amount of activity has slowed it to a crawl! 😱
I need to do some optimizations. Hang tight. If anyone has any issues you can go to settings and clear site data.

2025-08-22 10:21:04 UTC

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Type in /geo into any bitchat channel on coolr.chat and it will open a map corresponding to the geohash

2025-08-21 18:07:44 UTC

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Just basic ephemeral chat. Like IRC. Really had no intentions of anon chatting, but I do see the interest and I think it's cool. I haven't touched the coolr code in months! It didn't really catch on, but when I saw that bitchat added something similar I figured I would try and add support for it just for the heck of it. As you mention though, one of the things missing in coolr is the ability to be anon so Ill try and it that in shortly.

2025-08-21 17:56:01 UTC

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Sure, I can add an ephemeral option. I dont have it yet, because that was not the intention for coolr.chat
I've just added bitchat's ephemeral messaging kind so that coolr users could talk there.

2025-08-21 17:17:20 UTC

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Yes, I've added support for bitchat Geohash messaging.

2025-08-21 17:10:31 UTC

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Yes!

2025-08-21 17:05:31 UTC

https://blossom.primal.net/8e65cdd2dc25fdf67b5a1df38d1eea9d76032889e3dbac6bcf881e794b0e73b3.png
coolr.chat talking over Geohash channels!

2025-08-21 16:41:11 UTC

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@nprofile…h36r @nprofile…zj6n
I've added basic support for bitchat Geohash channels over at https://coolr.chat
Still some work to do, but you can easily chat with bitchat users. New messages from any Geohash will show up in separate channels as they come in and you can also just add the channel manually by doing
#bc_9q8yy
Once in a Geohash channel you can also simply type the command /geo to open up that Geohash location. I still need to work on mentions, and other things, but its working!
#nevent1q…hdg5

2025-08-21 14:40:37 UTC

@nprofile…zj6n @nprofile…h36r
Ive been playing around with bitchat and the new Geohash stuff. Really cool. Im actually going to add support for these ephemeral chats in my coolr.chat app. However, I did want to point out something that people should be aware of.
When chatting via Geohash, you should be careful if you are chatting in more precise Geohash locations. For instance, if you select the "block" Geohash, someone could easily be monitoring relays for kind 20000 and get a pretty good idea of where you are with a simple Geohash lookup.
Just something the people should be aware of.

2025-08-21 01:34:15 UTC

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How can I teleport to SF? What’s the geohash ?

2025-07-05 20:38:38 UTC

Took the boys fishing this morning with my dad. Caught some nice Spanish Mackerel. Fish bites tonight! https://blossom.primal.net/d9f94fa71ee659b5c508ef9c17bc5dae895e8a297183bc131349b9ed68aa408f.jpg https://blossom.primal.net/e259bb2da34fa6285acba4bc7c94430637edb71d293b18bfa1065e7d2322b8f4.jpg

2025-06-27 18:15:29 UTC

Chilling with the boys!
https://blossom.primal.net/ed7e9215e898b53ea2c401d4a08eb0834ba2c651e6077212c73dcef7eec0ed21.jpg
https://blossom.primal.net/18a02338ff839b7ee5b8acd326c9d0a93e7ef9a245d076ee281b6b359a33f0e9.jpg

2025-06-09 18:52:45 UTC

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Bingo! 🙏

2025-06-09 18:44:00 UTC

ngl, Apples new visual updates look awesome. This is one of my main reasons for building my Apple platform apps using mostly standard components. Along with feeling completely at home to the user, you get these updates for free!

2025-06-07 13:04:14 UTC

GM! Write code not prompts!

2025-06-06 21:10:10 UTC

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Not publicly, still in private beta. I’ve had acces for a while. It’s really cool. Very similar to Odin. I actually started a libsecp265k1 wrapper in Jai. It integrates with C libraries well.
Jai still lacks stdlib stuff like high level networking, etc. there are curl modules, but it’s just not quite ready to build something like a nostr app.
That said after talking with you in Nashville last year about nostrdb, I started a rewrite of Seer this week overhauling my local data store implementation that was using SwiftData. Now I’m using lmdb+flatbuffers and wow. It is significantly faster. Lights out. Wish I would’ve done it sooner!

2025-06-06 20:49:58 UTC

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Yeah I’m a fan of immediate mode, but I really also can’t get into rust. I want to, but just not my cup of tea. Really like Odin and Jai actually.
I’ve gotta stick with what I know best though. Swift and SwiftUI 😅

2025-06-06 19:45:08 UTC

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I just can't get into Dart and Flutter. I feel like that amount code you have to write is huge. You really get into what I call the pyramid of doom.
https://blossom.primal.net/b746dc11d03fde5611c991445892f8800ec893345a677ab30c4ac6143f31b7ce.jpg

2025-06-06 14:54:48 UTC

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😅 🙏

2025-06-06 14:44:50 UTC

Alright, back to Seer! I abandoned my effort for trying to build it with Tauri/SvelteKit. Web tech + rust is just to overly complicated for me. Maybe Im just not smart enough.
I decided on doing a re-write of my SwiftUI project. This will allow me to hit all apple platforms. Im going back to my UX goal of keeping it as true to the native platform as possible. It should feel like an apple app on their platforms. Im going for a "mail" like experience.
I also re-wrote the local data store using LMDB+Flatbuffers and wow. It's so much faster than SwiftData. It's night and day.
Here's a sneak peak. Its still very early, but I feel very good about this re-write. https://blossom.primal.net/2dec409abaa517addd710ecd1cf65db2267d38a6c81fe9bae7bdd66cc168518e.mp4

2025-06-01 19:32:58 UTC

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Always wondered if that’s where your name came from! Sweet ride! I wanted a 67 Fairlane

2025-05-28 17:17:07 UTC

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I'm quite new to web-dev and Sveltekit for that matter so I don't have any experience to speak of quite yet. Most of my experience is in Swift which I've been doing for over 10 years.
In terms of bundling into applications, I was going to try using Dixous, but I kept running into issues with the Linux rpm bundling so I hoped over to Tauri and everything just works so far.

2025-05-28 15:58:09 UTC

Had fun building Coolr, but hoping back over to Seer (nip-29 chat).
Experimenting with re-writing using Sveltekit/Tauri that way I can release on all platforms. Linux/Mac/Windows. https://blossom.primal.net/89b03f811f83bd89c71a3bcd9373be58b3fafab644b8193d613c3c1f46f95276.png

2025-05-24 21:49:56 UTC

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This is cool!
Maybe I should add it to my nostr ephemeral chat app Coolr!
https://www.coolr.chat

2025-05-24 19:43:50 UTC

Time for break!
https://blossom.primal.net/3157b1e2a663180669fd6f7bf6f5f5921fc08038653fde1c48100f33824ad938.jpg

2025-05-23 17:44:01 UTC

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not sure how many people are chatting on nos, but there are a few on damus.

2025-05-23 17:43:04 UTC

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Hmmm. Interesting. Switch over to relay.damus.io and try.. It should also be looking at purplepag.es

2025-05-23 16:36:13 UTC

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Thanks!🙏

2025-05-23 16:23:00 UTC

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For fun! Just a simple IRC like chat client built on ephemeral events.

2025-05-23 15:59:11 UTC

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Do you have a nostr browser extension?

2025-05-23 15:24:50 UTC

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Just click where it says "login with extension" at the top. Just supports nip-07 extension at the moment

2025-05-23 13:54:36 UTC

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By the way this is not nip29. It’s just a quick project I spun up that’s simply ephemeral chat. I’m still working on Seer though.

2025-05-23 13:51:57 UTC

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Yup! Its there. If you dont see anyone talking, just leave it open. As more people show up the more messages will come through 😉

2025-05-23 13:29:47 UTC

GM! Some more improvements to Coolr!
- Share links
- Welcome screen for new users
- Easier access to help
- Notification sound when tab not active
- other internal stuff
Check it out and start chatting!
https://www.coolr.chat/?relay=wss://relay.damus.io&channel=_
https://blossom.primal.net/17235cd7d9cada387b0323c1fd43c80181198ce60785485199080ef1a1886cdb.png
@nprofile…fmt5 5000

2025-05-22 13:08:01 UTC

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You mean with the coolr site? If so that’s something I’m working on today. So yes. Soon 😅

2025-05-22 13:03:22 UTC

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Awesome will do. My problem now is I do t support channel names with # in it. It’s simply a decoration in coolr. Will fix it though.

2025-05-22 12:03:48 UTC

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Really cool. I think I will change my NIP draft to use the same IRC channel naming conventions/spec. Its not quite the same at the moment. This should help.

2025-05-21 21:47:10 UTC

Alot of internal improvements for Coolr just pushed up.
- Better relay switching
- Small onboarding modal
- Clear all site data in settings (In case I screwed something up)
- Remembers your cached channels & messages when switching relays
Still need to do a few other things like creating shareable links and handling those when clicked.
Give it a try! And remember, its ephemeral, you have at the coolr to hear the gossip!
https://coolr.chat
@nprofile…zj6n @nprofile…zx3h @nprofile…x58v @nprofile…evql @nprofile…xh4c @nprofile…ydu3 @nprofile…u7e3 @nprofile…qxun @nprofile…2ln2 @nprofile…tyk0
Sorry for all the tagging, just trying to get some traction here since ephemeral chat is boring without people talking!

2025-05-21 15:20:16 UTC

Feels good!
https://blossom.primal.net/eff7e778c0ad20d635a05ba9f59f62f3a851d0c44af9c9281c82232bba428597.jpg

2025-05-04 18:36:02 UTC

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Haha. Not yet!

2025-05-03 21:46:39 UTC

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Cool site! Noticed you are using Svelte 🙏. I normally don’t do web dev, but just started building https://coolr.chat which is using SvelteKit. Pretty good framework.
Ps thanks for the add to nostr devs. 🙏

2025-05-03 21:42:52 UTC

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Yeah was kinda just joking a bit. Probably not the best place for that discussion. 😅

2025-05-03 21:35:51 UTC

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They can just come to the water cooler hammer it out.
Ephemeral Chat on nostr!
https://coolr.chat

2025-05-03 21:25:37 UTC

Just a reminder to checkout https://coolr.chat
Alot of progress made.
- unread channel indicators
- basic mentions by doing @ name or `@name` or pasting in nprofile or npub
- handling of nevent, naddr
- basic IRC like commands with / (more to come soon)
More work to do, but it's coming along! 😃

2025-05-03 21:20:02 UTC

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Yeah, send 'em over to Nostr's first IRC like ephemeral chat!
https://coolr.chat

2025-05-02 19:27:40 UTC

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I wouldn’t mind getting on the nostr dev list 😀

2025-05-02 16:20:00 UTC

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Ive used fyne a bit and it's actually pretty good, but the biggest negative for me is the lack of customization you can do to the look and feel. They take a "theme" approach and it's a lot more involved than it should be. If it could have more fine grained customizations like SwiftUI, etc it would be quite awesome.

2025-05-02 15:07:39 UTC

Finally a welcome change to iOS AppStore rules.
https://blossom.primal.net/98918c1d8b5cf97e8734c7195ef433277d4634989b1b4f61ff70023afb256257.jpg

2025-05-02 02:31:00 UTC

Are there any nostr services like nostr.watch which have an api to get a list of active relays?

2025-05-01 18:17:19 UTC

Working on a basic NIP for ephemeral chat. This is based off of how coolr.chat works and also thanks to @nprofile…x58v starting the basis of this document. I haven't submitted it yet, but just wanted to get the idea started.
https://gist.github.com/ismyhc/e42abc83aa266e622bf253763d52dd6b
You can also checkout https://coolr.chat
Still a work in progress so expect local cache resets as I push out new builds 😃

2025-05-01 14:12:35 UTC

I few changes to Coolr this morning.
If you have it open, please refresh. It will clear your local cache for the breaking changes.
Now using "_" for the default channel so that if you wanted you could filter only by that.
https://coolr.chat

2025-05-01 01:38:59 UTC

Don’t forget to check out Coolr Ephemeral chat. I won’t be around tonight, but hopefully some people will be.
More improvements coming tomorrow!
- shareable channel links
- IRC like commands
- …
https://coolr.chat

2025-04-30 21:34:10 UTC

Some more updates to Coolr
- nip05 should be working better. If for some reason its not showing, you may need to make sure that your kind 0 is available on the relay you are posting to, or at purplepag.es
- when you refresh if you have the older version it will clear you local cache since some breaking changes happened.
https://coolr.chat

2025-04-30 17:58:58 UTC

Okay, made some improvements to my experimental Nostr chat.
It's an ephemeral chat. Kinda like shooting the shit at the water cooler.
- local caching of messages, channels and user metadata.
- nip05 support with verified checkmarks
- Ability to switch to another relay if you'd like.
Still needs a handful of other things. Like ability to easily switch accounts with nostr extension. (if you need to just clear out local storage).
Needs better mobile layout.
Might also add unread counts to the channel list.
Come chat!
https://coolr.chat

2025-04-30 02:19:17 UTC

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Yeah for sure. I think one way would be to use webauthn credentials to encrypt the private key, the it could be store in IndexedDB encrypted. Then any time the user needs to sign an event you could request navigator.credentials.get() which would pull up face/Touch ID to decrypt key and sign. Not perfect but it could be a potential solution.

2025-04-30 02:07:40 UTC

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The biggest problem with PWA imo is that there’s not a great way to store private key. Specifically on iOS you don’t have access to keychain as you would on a native app. I also I am not sure you can use a Safari extension as you normally would from just using Safari.

2025-04-29 01:21:11 UTC

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Hopefully that changes. It’s absolutely insane.

2025-04-26 19:49:57 UTC

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Yes. I was actually thinking of calling it water cooler too 😀.
But yeah I think that’s a great idea someone mentioned something similar

2025-04-26 19:44:01 UTC

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Will dig deeper on this but at first glance this is more involved than my concept. Not a dig at the author at all, I’m just thinking even more simple.

2025-04-26 19:42:02 UTC

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Some basic things to still be done
- Allow connecting to any relay
- local caching of channels you’ve and messages you’ve seen
- nip05 verification
- mobile responsive
- easily sharing links to specific channels via bech32 encoded URLs
- mentions (maybe)
- write a simple NIP/ spec
The idea is to be as simple as possible.
#nevent1q…ag3j

2025-04-26 18:24:02 UTC

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Yeah for sure. Haven't thought about it like that, but a way to spin up quick relay and dispose of it would be cool.