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Show HN: A luma dependent chroma compression algorithm (image compression)

https://www.bitsnbites.eu/a-spatial-domain-variable-block-size-luma-dependent-chroma-compression-...
28•mbitsnbites•3d ago•2 comments

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
53•momciloo•7h ago•10 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
294•isitcontent•1d ago•39 comments

Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
44•sandGorgon•2d ago•20 comments

Show HN: Django-rclone: Database and media backups for Django, powered by rclone

https://github.com/kjnez/django-rclone
2•cui•1h ago•1 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
362•eljojo•1d ago•218 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
374•vecti•1d ago•171 comments

Show HN: Witnessd – Prove human authorship via hardware-bound jitter seals

https://github.com/writerslogic/witnessd
2•davidcondrey•2h ago•1 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
97•antves•2d ago•70 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
85•phreda4•1d ago•17 comments

Show HN: PalettePoint – AI color palette generator from text or images

https://palettepoint.com
2•latentio•4h ago•0 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
156•bsgeraci•1d ago•65 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

https://www.biotradingarena.com/hn
29•dchu17•1d ago•12 comments

Show HN: I built a <400ms latency voice agent that runs on a 4gb vram GTX 1650"

https://github.com/pheonix-delta/axiom-voice-agent
2•shubham-coder•6h ago•1 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
55•nwparker•2d ago•12 comments

Show HN: Stacky – certain block game clone

https://www.susmel.com/stacky/
3•Keyframe•7h ago•0 comments

Show HN: A toy compiler I built in high school (runs in browser)

https://vire-lang.web.app
3•xeouz•8h ago•1 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
23•NathanFlurry•1d ago•11 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
18•denuoweb•2d ago•2 comments

Show HN: Env-shelf – Open-source desktop app to manage .env files

https://env-shelf.vercel.app/
2•ivanglpz•9h ago•0 comments

Show HN: Nginx-defender – realtime abuse blocking for Nginx

https://github.com/Anipaleja/nginx-defender
3•anipaleja•9h ago•0 comments

Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
173•vkazanov•2d ago•49 comments

Show HN: MCP App to play backgammon with your LLM

https://github.com/sam-mfb/backgammon-mcp
3•sam256•11h ago•1 comments

Show HN: Horizons – OSS agent execution engine

https://github.com/synth-laboratories/Horizons
27•JoshPurtell•2d ago•5 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
14•toborrm9•1d ago•8 comments

Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

https://github.com/voice-of-japan/Virtual-Protest-Protocol/blob/main/README.md
9•sakanakana00•12h ago•2 comments

Show HN: I built Divvy to split restaurant bills from a photo

https://divvyai.app/
3•pieterdy•12h ago•1 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

https://rahuljaguste.github.io/Nethack_Falcons_Eye/
7•rahuljaguste•1d ago•1 comments

Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•2d ago•2 comments

Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
22•keepamovin•18h ago•6 comments
Open in hackernews

Show HN: Copus – Internet gem marketplace for bookmark collectors (x402-powered)

https://www.copus.network/
4•Handuo•2mo ago
Hey HN!

We’re a small team of artists, developers, and coffee lovers who’ve watched a lot of websites we love shut down over the years. We’ve been looking for a way to support them with income and exposure.

We see that more people are interacting with the web through AI instead of visiting sites directly, so the ad-based model is breaking. The open web needs a new business model.

Our take is to incentivize people (and, in the future, AI agents) to find and share valuable content (links), with both the finder and the original creator rewarded.

Along the way we were inspired by discussions like:

Pocket shut down: https://news.ycombinator.com/item?id=44063662

x402 protocol: https://news.ycombinator.com/item?id=45347335

“To survive the AI age, the web needs a new business model”: https://news.ycombinator.com/item?id=44598248

Key features

Social bookmarking It’s like a decentralized Digg or a Pinterest-for-websites. You can share (curate) any URI (URL) through the site or the browser extension. Others can collect and build on your collections.

Pay-to-visit Finding valuable content is valuable. You can set a stablecoin price for visiting a link you shared. Payments are powered by the x402 protocol.

Support sites/content you love Half of the pay-to-visit revenue goes to the author of the original content, claimable after they opt into x402 or register a Copus account.

Permanent storage Your collections (bookmarks) are automatically stored on the Arweave blockchain. We pay the storage fees so you’ll never lose them.

Other features we have in mind

Spaces Like Pinterest boards, to organize your collections and collaborate with others.

Weave If a link reminds you of another link, you can “weave” them together in a “you may also like” section. It’s a bit like a collective Obsidian graph where standalone websites become a connected map and every site is a rabbit hole.

AI agent support You can train agents to curate and purchase for you.

Social features Follow accounts with great taste.

Who we imagine this is for

If you’ve been bookmarking over the years, you already have tons of internet gems in hand! Please pick the best ones to share with the world. They’re valuable for both readers and original creators.

Were you a Pocket user? Save your best bookmarks here and never lose them. (We plan to support putting a copy of the whole website on-chain once the project scales. Right now we put the link, category info, and your recommendation notes on-chain for free.)

Some other things

Copus is open source, with the frontend built using Claude Code.

We plan to launch a governance token to put ownership of the project into the hands of the people who use it.

We don’t mess with rights and privacy. Aside from some essential terms needed to keep the project running, your rights remain yours.

Copus has a Chinese version (Copus.io), which is a haven for around 150k Chinese fan-fiction lovers rn. We might merge the two sites once the English content reaches scale or we might not.

How we plan to make money

We’re still figuring it out. The first idea is:

Take a 10% fee on each payment.

Put unclaimed creator earnings into low-risk investments (similar to how stablecoins earn yield).

Hope you enjoy Copus, and thank you in advance for trying it out early!