Post-quantum encryption · Built on Solana
The post-quantum layer for data, messages and agents.
Coins can run to a fresh address. Your data can’t. Kvant seals your files and messages post-quantum, right in your browser. Nothing is uploaded.
- ML-KEM-768 + ML-DSA-65
- The NIST post-quantum standards (FIPS 203 and 204)
- 0 bytes
- of your files or messages sent to a server
- Free to start
- No account, no fees. Holders encrypt more
Built on proven standards:
- ML-KEM-768NIST FIPS 203
- ML-DSA-65NIST FIPS 204
- X25519RFC 7748
- AES-256-GCMNIST SP 800-38D
- MCPAgent interface
- x402Agent payments
- Solana$KVANT tiers · anchors
- nobleOpen-source crypto
Road to graduation
Every buy fills the curve.
$KVANT trades on a pump.fun bonding curve on Solana. At 100%, it graduates and its liquidity moves to a public pool. Read live from the chain.
…
of the curve filled · live
Market cap now
…
Raised on the curve
…
Left to graduate
…
Market cap at graduation
…
- 1Now
Bonding curve on pump.fun
Every buy raises the price along a fixed curve. No presale.
- 2
Graduation at 100%
When the curve has sold its last token, it closes for good.
- 3
Trading on a pool
The curve’s liquidity migrates to a public pool on Solana, and trading continues there.
Read from Solana every 10 seconds. Reserves come from the pump.fun curve account itself.
Why now
Coins can run. Data can’t.
A wallet can move to a new address. A file, a message or an agent’s key can’t: once copied, it waits for the day the math breaks.
Crypto is preparing for bunker mode
The plan: move coins to fresh addresses if elliptic curves fall early, to AI or to quantum computers.
A file can’t run
Anything sealed with curves alone can be copied today and opened the day those curves fall.
Kvant is the bunker for data
Your files and messages, sealed with the NIST post-quantum standards before they leave your device.
How it works
Four steps. About a minute.
Everything happens in your browser. Kvant never sees your file, your keys or your passphrase.
01
Choose your keys
Connect your wallet and sign once, or create a key file protected by a passphrase. No account, no fee.
Wallet or key file02
Drop your file
Any type of file. Its name and exact size are sealed inside with the content.
Any file type03
It’s sealed on your device
Encrypted with ML-KEM-768 + X25519 and signed with ML-DSA-65, in your browser. Nothing is uploaded.
ML-KEM-768 · ML-DSA-6504
Keep your envelope
Download the .kvant file and its Quantum Seal. Open it on any device with the same keys.
.kvant + Quantum Seal
Products
One envelope, everywhere you need it.
Live in your browser for files and messages, and in your AI agents through the MCP server. One envelope everywhere.
Encrypt a file
Drop any file, for yourself or for someone else. Get a .kvant envelope only the right keys open, plus a Quantum Seal you can anchor on Solana.
Encrypt a fileSend a sealed message
Write a message, get a link. The text travels inside the link, encrypted. No server ever stores it.
Write a messageVerify a Quantum Seal
Drop a Seal image to read what it certifies: when, with which algorithms, and the file’s fingerprint.
Verify a sealFor your AI agents
An MCP server with six tools for Claude, Cursor and any MCP client, installed with one command. Same envelope, same keys.
Install the MCP serverPlannedKvant Shield, a post-quantum gateway for x402 payments.See the roadmap →
Security
Five guarantees, and how to check them.
- 01
We hold none of your data
No server processes your files or messages.
Check: Open your browser’s network tab and seal a file: no request carries it.
- 02
Only NIST-standardized algorithms
ML-KEM-768 and ML-DSA-65 (FIPS 203 and 204). No home-made crypto.
Check: Drop any Seal on /verify: it lists the algorithms written into it.
- 03
Safe against quantum computers
Hybrid: an attacker has to break a post-quantum scheme and a classical one.
Check: Every envelope header holds a 1,088-byte ML-KEM-768 ciphertext and a 32-byte X25519 key, at the offsets in the docs.
- 04
Your keys stay yours
No storage, no escrow. Keys come from your wallet or your key file.
Check: There is no account and no reset: reload the page and the keys are gone until you load them.
- 05
Tampering is detected
Every envelope is signed. Change one byte and it will not open.
Check: Flip one byte of an envelope with any hex editor, then try to open it.
Each check runs in your own browser and needs nothing from us. The cryptography comes from the open-source noble libraries; Kvant’s own code is not open-source. Read the security model →
Tiers
Holders encrypt more.
No subscription, no account. The value of the $KVANT in your wallet sets how much you can seal each day. The encryption is the same on every tier.
How much $KVANT do you hold?
HolderFirst holder tier
For daily use: more files a day, and bigger ones.
≥ $20 in $KVANT
25
files sealed a day
- Quantum Seal on every encrypted file
- Wallet or key file mode
Tiers are live: the app reads the $KVANT balance of the wallet you connect, on Solana. Official mint, the only one that sets your tier: 6LoS3Rn2iUCMkSGcChGFNXGPRpnG8KUqjwhgJvcepump · · View on explorer
FAQ
Things people ask.
Can’t find your answer? Browse the docs or ask us on X @Kvantcoin.
Browse the docsBoth. Humans use the web app at /app: drag a file, get a .kvant envelope. Agents use the MCP server: a local stdio process that Claude Desktop, Cursor or your own runtime calls as kvant_encrypt_file, kvant_sign_x402 and four more tools. Same crypto, same envelope, same .kvant binary format.
Coins can run.
Data can’t.
Seal your files and messages post-quantum, in your browser. Free to start, no account.