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Show HN: Anchor any file to Bitcoin to prove it existed at a specific time

https://umarise.com/blog/proof-of-existence
2•Umarise2026•7h ago
Finding the balance between humans and machines has been the thread through my career. I always had a thing for AI and couldn't wait for it to actually deliver on what was promised. Now it does, and it's more important than ever that humans and machines keep working well together.

AI makes creation trivial. Text, code, design, strategy, in seconds. But one thing AI does not create: independently verifiable proof of when something existed. Reproducing is now cheaper and easier than creating. Chronology becomes contestable at the moment it matters most.

The universal problem was known. I started from the conviction that it has to work honestly, independently, and also without our company. So I built a neutral proof infrastructure layer that can independently provide the starting point of evidence. Even independent of us. At the moment of capture you can anchor your files, data, models, artifacts to Bitcoin using the OpenTimestamps engine. OTS and Bitcoin are existing primitives. I wanted to make them accessible for every developer in one file, without touching their own code. It became 12 lines of YAML. Independently verifiable proof, simple to integrate, zero data storage.

The infrastructure is solid now and the moment of distribution has arrived. That's why I'm posting this on HN. I don't want to have to sell this to companies. I hope to grow it together with developers like you into an anchoring-by-default infrastructure. A layer underneath existing evidence architecture, so that every file automatically carries its own proof at the moment of creation. Proof that may be needed later in case of dispute.

The hardest part of building this is, stupidly enough, not the building itself. You can always improve that, especially with a community like this one. The hardest part is finding the way to the right people who want to build this out with me into a new layer in the stack.

The core API is live at itexisted.app so anyone can experience how it works. We also run it in our own GitHub environment. Every commit is anchored to Bitcoin directly. The case study is on our site.

umarise.com/case/ai-code-generation

Show HN: Three new Kitten TTS models – smallest less than 25MB

https://github.com/KittenML/KittenTTS
300•rohan_joshi•8h ago•99 comments

Show HN: I built a P2P network where AI agents publish formally verified science

32•FranciscoAngulo•5h ago•9 comments

Show HN: Duplicate 3 layers in a 24B LLM, logical deduction .22→.76. No training

https://github.com/alainnothere/llm-circuit-finder
235•xlayn•1d ago•79 comments

Show HN: Dumped Wix for an AI Edge agent so I never have to hire junior staff

16•axotopia•8h ago•38 comments

Show HN: Browser grand strategy game for hundreds of players on huge maps

https://borderhold.io/play
51•sgolem•3d ago•22 comments

Show HN: React terminal renderer, cell level diff, no alt screen

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2•nathan-cannon•5h ago•0 comments

Show HN: Playing LongTurn FreeCiv with Friends

https://github.com/ndroo/freeciv.andrewmcgrath.info
85•verelo•1d ago•35 comments

Show HN: I built 48 lightweight SVG backgrounds you can copy/paste

https://www.svgbackgrounds.com/set/free-svg-backgrounds-and-patterns/
375•visiwig•1d ago•67 comments

Show HN: Ripl – A unified 2D/3D engine for Canvas, SVG, WebGPU, and the Terminal

https://www.ripl.rocks
15•andrewcourtice•12h ago•0 comments

Show HN: Will my flight have Starlink?

269•bblcla•1d ago•350 comments

Show HN: Local Document Parsing for Agents

https://www.llamaindex.ai/blog/liteparse-local-document-parsing-for-ai-agents
19•cheesyFish•6h ago•1 comments

Show HN: Oku – One tab to filter out noise from feeds and content sources

https://oku.io
4•oan•6h ago•0 comments

Show HN: Tmux-IDE, OSS agent-first terminal IDE

https://tmux.thijsverreck.com
86•thijsverreck•1d ago•37 comments

Show HN: BamBuddy – a self-hosted print archive for Bambu Lab 3D printers

https://bambuddy.cool
3•maziggy•7h ago•0 comments

Show HN: Pgit – A Git-like CLI backed by PostgreSQL

https://oseifert.ch/blog/building-pgit
123•ImGajeed76•2d ago•61 comments

Show HN: Anchor any file to Bitcoin to prove it existed at a specific time

https://umarise.com/blog/proof-of-existence
2•Umarise2026•7h ago•0 comments

Show HN: PearlOS: we gave AI a talking desktop environment instead of a text box

4•stephanieriggs•8h ago•0 comments

Show HN: 3 AI agent trust systems cross-verified each other's delegation chains

https://github.com/kanoniv/agent-auth/issues/2
2•dreynow•8h ago•0 comments

Show HN: Claude Code skills that build complete Godot games

https://github.com/htdt/godogen
334•htdt•3d ago•203 comments

Show HN: MDX Docs – a lightweight React framework for documentation sites

https://mdxdocs.com
3•thequietmind•9h ago•0 comments

Show HN: We attached vGPUs to sandboxed Chromium then played Doom 3 x WASM on it

https://www.kernel.sh/blog/gpu
8•rgarcia•9h ago•0 comments

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306•adammiribyan•2d ago•69 comments

Show HN: Dear Aliens (Writing Contest)

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91•jellyotsiro•2d ago•40 comments

Show HN: P2PCLAW – I built a decentralized research network where AI agents

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Show HN: Open-source synthetic bank statements for testing parsers

2•Maesh•11h ago•0 comments

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https://github.com/vdavid/mtp-rs
3•vdavid•11h ago•1 comments

Show HN: Agentic Copilot – Bring Claude Code, OpenCode, Gemini CLI into Obsidian

https://github.com/spencermarx/obsidian-ai
5•mrxdev•11h ago•0 comments

Show HN: Horizon – GPU-accelerated infinite-canvas terminal in Rust

https://github.com/peters/horizon
78•petersunde•2d ago•31 comments

Show HN: ShadowStrike EDR/XDR Kernel Sensor Development

2•Soocile•12h ago•0 comments