Z

Free encrypted notes. ZK proof of originality. Content marketplace. Built on Solana. Your words, your proof." -

[Z @zkpnote]

I built a full note-taking app in 4 days.
End-to-end encrypted. On-chain proof of authorship. Built-in marketplace. MCP server so Claude can read and write directly into your vault.
No subscription right now. Here's the 2-min demo:

[Z @zkpnote]

@GithubProjects https://t.co/q6YYca5lNz

[Z @zkpnote]

@quionie easily in a few hours

[Z @zkpnote]

@devoznunes dont come to my page.

[Z @zkpnote]

@adahstwt I have a feeling Claude are steering builders to the stack mentioned here as "recommendations". I wonder if the algorithm is biased or these are truly the most effective "free" stack in the market. Anyone heavy in Claude and a senior experienced ENG before Claude can tell us?

[Z @zkpnote]

@YashHustle_22 Are you leveraging any knowledge network graph. Cheapest way to pull massive context into another chat without re-explaining everything.

[Z @zkpnote]

Your AI reads 37 notes to answer one question. That's 35,000 tokens wasted.

We built a knowledge graph that does it in 743.

One call. 98% fewer tokens. Encrypted end-to-end. Proved on Solana.

ZKPnote — your AI second brain just got a map.

Live on devnet now.

[Z @zkpnote]

@solana_stream 🇺🇸 gladiator here

[Z @zkpnote]

Appreciate that! The MCP piece has been the biggest unlock for me personally — I use Claude to dump research and meeting notes straight into my vault, then pull them back as context for other conversations. Turns a note app into a persistent memory layer for your agents. Still early but the workflow is already hard to go back from.

[Z @zkpnote]

I built a full note-taking app in 4 days.
End-to-end encrypted. On-chain proof of authorship. Built-in marketplace. MCP server so Claude can read and write directly into your vault.
No subscription right now. Here's the 2-min demo:

[Z @zkpnote]

@contactabe @akothari @ivanhzhao @NotionHQ Evernote bloat + Notion complexity is such a common story. A lot of us are moving toward dead-simple, fully private on-device notes that don’t try to be everything. No cloud, no feature creep — just yours. What’s the one thing you wish your notes app did better right now?

[Z @zkpnote]

@contactabe @akothari @ivanhzhao @NotionHQ 👀

[Z @zkpnote]

@Slayed_eth Yeah the lock-in is the worst part. You don't realize how much of your brain lives in their servers until you try to leave. I've been moving to local-first markdown for exactly this reason — your notes shouldn't be held hostage by a pricing page.

[Z @zkpnote]

NEW FEATURE ALERT

Starting a new company? 🚀

Claude drafts your business plan, pitch deck, and GTM strategy.

With ZKPnote's MCP server, Claude can now:

📝 Write every doc into your encrypted vault
🔒 Keep it private, local, yours
⛓️ Prove originality on Solana — timestamped forever
Before you pitch a VC, the blockchain already knows you wrote it first.

💡Works with any MCP agent — Claude, Cursor, and more.

Your ideas. Your proof. Your market.

https://t.co/70IX277VIh 🔗

[Z @zkpnote]

@sherifgjini who can relate?

[Z @zkpnote]

Honestly — mostly agree. The privacy-first note app is the product. Encrypted, local, free. That stands on its own.

The proof-of-originality layer is a bet on where things are going. When AI-generated content is indistinguishable from human work, having an immutable timestamp of authorship on-chain won't be a feature — it'll be a necessity.

We'd rather be early than late on that.

[Z @zkpnote]

You pay $20/mo for a note app that doesn't even own your data.

Meanwhile AI is scraping everything you write.

We built ZKPnote — free, encrypted notes on Solana. Your content never leaves your device. Prove you wrote it first with ZK proofs. Sell it if you want.

Try it now on https://t.co/70IX277VIh - devnet 👇🧵

[Z @zkpnote]

We're building ownership infrastructure for the AI era.

Markdown is the file format AI runs on — and there's zero way to prove who wrote it. Until now.

https://t.co/FbHfiqIjQx

Live on devnet. Mainnet soon.

Follow @zkpnote for updates.

[Z @zkpnote]

But we didn't stop at proof.

ZKPnote has a built-in marketplace:

🪙 List your notes for sale (copies or originals)
🏦 Run auctions with timed bidding
🤖 3-layer plagiarism detection blocks stolen content
🤝 98% goes to you, 2% protocol fee
🥇Your writing has value. Now you can prove it and sell it.