Learn how to protect your crypto seed phrase with military-grade AES-256 encryption in just a few minutes. Watch the product overview, then follow the step-by-step guide.
A 40-second cinematic walkthrough of SeedCrypt's key features, security model, and user experience.
Adding a new seed needs a licence. One visit to seedcrypt.app/activate is enough — after that, SeedCrypt verifies it offline, for good.
Open SeedCrypt, go to Settings → Licence. Your installation ID is shown there (e.g. K7M2-9QX4). It is different on every machine.
On seedcrypt.app/activate, enter the entitlement code from your purchase email (e.g. SC-SO-1234567-89012345), the email you paid with, and that installation ID.
You get a block of about 103 characters. Copy it into SeedCrypt, then activate. Verification is entirely offline from then on — permanently.
Decrypting, reading and exporting the seeds you already saved is never blocked, licence or not. Only adding a new seed requires one.
Follow along as we encrypt a seed phrase from start to finish. Every click, every field, explained.
Choose where to save: USB key, external disk, or local folder. Your encrypted .json file will be saved there.
Launch the app. No account needed, no internet required. The sidebar shows your available actions.
Select the Encrypt action from the home screen. The encryption form opens with a 3-step process.
Type your 12 or 24 BIP-39 words. SeedCrypt validates each word in real-time against the BIP-39 wordlist.
Pick a strong password. It's stretched through 600,000 PBKDF2-SHA512 iterations into the AES-256 key.
Your seed is now AES-256-GCM encrypted. The file is unreadable without your password. Export to QR or PDF anytime.
Recover your seed in seconds — same password, same encrypted file, anywhere SeedCrypt runs. The encrypted file stays untouched after every decryption.
Open the app. It auto-scans the storage paths you selected (USB key, external disk, internal folder) for encrypted .json files.
The home screen lists every encrypted seed found on your storage, labeled with the name and creation date. Tap the one you want to open.
The same password you used when encrypting. SeedCrypt derives the AES-256 key via PBKDF2-SHA512 with 600,000 iterations — same as encryption.
The 12 or 24 BIP-39 words appear as numbered cells. Tap any single word to copy it, or use the "Copy all" button to copy the full mnemonic.
Clipboard wipes after 30 s, plaintext disappears from screen after 60 s. A countdown shows the time left. You can hide manually at any time.
Decryption never modifies the .json file. Decrypt as many times as you need — the encrypted backup stays the same, always recoverable with the same password.
Five real-world situations and how to handle each one.
Your encrypted seed lives on a USB key. Plug it in, open SeedCrypt — your seed appears on the home screen automatically. Tap it, enter your password, view the words, unplug the USB. Zero trace.
Install SeedCrypt on a borrowed/library machine. Plug your USB key in — SeedCrypt scans and finds the encrypted seed. Decrypt with your password. When you leave, no plaintext copy is left on disk.
You printed your encrypted seed as a PDF with a QR code. On Android, tap "Decrypt" → "Scan QR" → point at the paper. The encrypted payload loads. Type your password to reveal the seed.
New laptop or phone? Install SeedCrypt, connect the USB or import the .json file, and the seed is recognized immediately. No account migration, no cloud sync — your password unlocks it anywhere.
If you saved the encrypted JSON to a note, an email draft, or a friend's drive, paste the payload into the "Decrypt" screen's text field. SeedCrypt parses it and asks for your password.
One-time purchase. No account, no subscription. Works offline.
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