NULL

Private access to the machine economy. One private balance, every API. Built around Ethereum's zkAPI.

∅

[NULL @NULL_zk]

Layer 1 is live 🛡️

NULL Chat now has Prompt Shield: names, emails, phone numbers, addresses and wallets are swapped for placeholders before your message leaves the browser. The answer is filled back in on your device.

All 3 layers of private AI that @VitalikButerin described are now live in NULL Chat:

Text → Prompt Shield
Payment → zkAPI
Network → Tor

https://t.co/793FEvcUtB

[NULL @NULL_zk]

New on NULL: Private Share Links 🔗

Share an AI answer without uploading it anywhere.

The answer travels inside the link itself, after the “#”. Browsers never send that part to a server, so we never see what you share.

• names stay out (shared as [NAME_1])
• optional passphrase lock
• no account, no upload, no copy on our side
https://t.co/793FEvcUtB

[NULL @NULL_zk]

New on NULL: Your Crowd 👥

Every NULL request is paid with a zero-knowledge proof. It proves a funded note paid, never which one.

So your privacy = the crowd you hide in.

Now NULL Chat shows it, live from Ethereum:
• 69 open notes you hide among
• how many deposits look like yours
• what’s public on-chain, and what isn’t
Privacy is a crowd. Join it

https://t.co/793FEvcUtB

[NULL @NULL_zk]

Most AI apps vs NULL:

Account: required → none
Payment: your card → a zero-knowledge proof
Chat history: on their servers → only in your browser, or nowhere (ghost chats)
Names in your messages: sent as typed → swapped for placeholders
Photos: with GPS and faces → location removed, faces blurred
Voice: uploaded → turned into text on your device

https://t.co/793FEvcUtB
@VitalikButerin

[NULL @NULL_zk]

New on NULL: Ghost Chats 👻

Some questions you don’t want saved anywhere. Health, money, relationships

NULL never stored your chats on a server. Now a ghost chat isn’t even saved in your browser:

• files and photos stay in memory only
• leave the chat or close the tab and it’s gone
• for normal chats: auto-delete after 24h, 7 or 30 days
Ask. Leave no trace

https://t.co/793FEvcUtB

[NULL @NULL_zk]

This week on NULL: 7 privacy updates in 6 days

🛡 AI Shield: a small AI in your browser hides names
📎 Private Files: PDFs as text, photos without GPS
🎙 Private Voice: your voice never leaves your device
🫥 Face Shield: faces blurred before sending
🖼 Screenshot Shield: emails & wallets covered
🔐 Encrypted Backup: your chats, your key
🔭 Deep Research: cited reports, every search paid by ZK proof
One idea behind all of them: the AI gets your question. Not you

https://t.co/793FEvdsj9

[NULL @NULL_zk]

New on NULL: Private Deep Research 🔭
@VitalikButerin is this Privacy? (Check out NULL chat)

Ask one question. NULL plans the searches, runs them in parallel and writes a report where every claim has a numbered source.

• your question is shielded first
• no name, email or placeholder ever goes into a search
• every search is paid with a zero-knowledge proof
No account. No search history tied to you

Research privately: https://t.co/793FEvdsj9

[NULL @NULL_zk]

Big Update on NULL: Encrypted Backup 🔐

NULL has no accounts and no server that stores your chats. They live only in your browser.

Now you can take them with you:

• one file with all your chats, files and images
• encrypted in your browser (Argon2id + AES-256-GCM)
• open it on any device with your passphrase
We never see the file. We never see the passphrase.
Your chats. Your file. Your key.
https://t.co/793FEvcUtB

[NULL @NULL_zk]

@13Jasonvoorhes @VitalikButerin Who rugged? We are still here shipping everyday

[NULL @NULL_zk]

New on NULL: Screenshot Shield 🖼️

You screenshot a withdrawal page to ask AI if something’s off. It’s full of your email, phone, wallet and IBAN.

Now NULL reads the screenshot inside your browser and covers every personal detail before it’s sent.

The AI sees [EMAIL], [WALLET], [IBAN] boxes. Not your data.

Screenshot freely: https://t.co/793FEvcUtB

[NULL @NULL_zk]

New on NULL: Face Shield 🫥

Send a photo to AI and it sees every face in it.

Not on NULL. Before your photo leaves your browser:

• a tiny model finds the faces
• each face is shrunk to 6 pixels and smoothed, so the identity is gone
• location, camera and date are removed too
The AI sees the scene. Not the people.

This is privacy @VitalikButerin

https://t.co/793FEvcUtB

[NULL @NULL_zk]

What should an AI never see about you?

So far NULL hides your wallet, your names, your photo location and your voice.

Tell us what's next. We'll build the best answer 🔒

@VitalikButerin what do you think?

https://t.co/oqmANz1Aea

[NULL @NULL_zk]

New on NULL: Private Voice 🎙

Your voice is biometric. Voice typing in browsers usually uploads it to a cloud.

NULL Chat now has a mic, and the speech-to-text runs inside your browser:

• Whisper turns your voice into text on your device
• the text goes through Prompt Shield like anything you type
• your voice is never sent anywhere

Talk privately: https://t.co/793FEvcUtB

[NULL @NULL_zk]

What happens when you hit send in NULL Chat:

∅ Your browser scans your message. Patterns and a small local AI swap names, emails and IBANs for placeholders like [NAME_1].

∅ Attached files get cleaned. Photos lose their GPS location, PDFs become plain text.

∅ Your browser makes a zero-knowledge proof: "this user has paid balance". It doesn't say which user.

∅ The request goes out on a short-lived key, with placeholders only.

∅ The answer comes back, and your browser puts the real names back in.

No account. No email. No card
Privacy is NULL ∅

[NULL @NULL_zk]

@Hafizasif512 @VitalikButerin @ethereumfndn We are. Privacy is NULL

[NULL @NULL_zk]

New on NULL: Private Files 📎

Your photos carry your GPS location. Your PDFs carry names, emails and IBANs.

Now you can attach both in NULL Chat, and your browser cleans them first:

• photos are redrawn, so location, camera and date are gone
• documents go as text only, with personal details swapped for placeholders
• the files themselves never leave your device
The AI still sees what's in your photo, just not where you took it.

https://t.co/793FEvcUtB ∅

[NULL @NULL_zk]

NULL Chat now has a small AI that protects you from the big one.

Turn on AI Shield and a 29 MB model runs right in your browser. It spots names, companies and places before you hit send.

You type: "lunch with Jonas Weber from Siemens"
The AI sees: "lunch with [NAME_1] from [ORG_1]"
Nothing is sent anywhere to find them. The answer comes back with the real names filled in on your side.

@VitalikButerin what do you think?
is this privacy?

https://t.co/793FEvcUtB

[NULL @NULL_zk]

New on NULL: AI Shield 🛡️

Prompt Shield already hides emails, phone numbers and wallets before your message leaves your browser.

But names, companies and places have no fixed shape. Patterns can't catch them.

Now a small AI model runs inside your browser and finds them:
"lunch with Jonas Weber from Siemens" → "lunch with [NAME_1] from [ORG_1]"
• 29 MB, downloads once
• runs on your own CPU in milliseconds
• nothing is sent anywhere to find them
• the real names are filled back in on your side

Switch it on next to SHIELD. English works best for now.
https://t.co/793FEvcUtB

[NULL @NULL_zk]

@saad_shouket1 yes, fixing it currently. Dont worry burn will continue asap

[NULL @NULL_zk]

zkAPI is growing every day 🔥

Privacy is freedom
Privacy is NULLzk

[NULL @NULL_zk]

Privacy is NULLzk

@VitalikButerin