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Spicebag
Compress crypto seed phrases into secure visual artifacts.
Convert your crypto wallet seed phrases into decodable, cryptographically secure visual artifacts you can creatively store, scatter, and reassemble. BIP39, Electrum, SLIP39, all supported. Completely offline. Resists common visual exfiltrations such as photography and lossy data transfer.
Spicebag turns a crypto seed phrase into a color-coded PNG and reads it back, word for word. Each word becomes one solid RGB cell in a grid, and the same phrase can be drawn as 10⁴⁷ to 10¹³⁹ different-looking images, so no two copies ever match.
I used to collect generative art NFTs, and I kept coming back to how strange it is that six figures of crypto usually sits on a strip of paper in a fireproof box. That box handles fire and floods, not people: anyone who opens it knows instantly what those words are worth. A random picture on your phone doesn't. Scatter the pixels across dozens of camera photos if you want, and put them back together only when you need to recover.
Decoding is the part I obsessed over, because a backup you can't trust isn't one. It validates the mnemonic checksum, rejects PNGs carrying palette, transparency, or ICC chunks, and fails loudly if lossy compression touched even one cell. You either get your exact phrase back or a rejection. It never guesses. BIP39, Electrum, SLIP39 supported, 12 to 33 words.
The optional salt runs through Argon2id at 256 MB of RAM per guess, expanded by domain-separated HKDF-SHA512. Never stored, any Unicode, no length cap. Guessing a seed phrase outright is much easier than cracking a salted image.
MIT, pip install spicebag, Windows/macOS/Linux. No network code at all. Nothing leaves the CLI, ever.
To be straight about the threat model, however; this won't save you from malware or anyone watching your screen. It's about what your backup looks like while it sits still.
Fun fact: this project was named after the iconic Irish-Chinese takeaway dish. You throw seasoning and salt into a bag and shake it. That's more or less what the encoder does.
Tell me where you'd hide yours. And roast the crypto, I want it to hold up.
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About Spicebag on Product Hunt
“Compress crypto seed phrases into secure visual artifacts.”
Spicebag was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #154 on the daily leaderboard. Convert your crypto wallet seed phrases into decodable, cryptographically secure visual artifacts you can creatively store, scatter, and reassemble. BIP39, Electrum, SLIP39, all supported. Completely offline. Resists common visual exfiltrations such as photography and lossy data transfer.
Spicebag was featured in Open Source (68.9k followers), Crypto (39.8k followers) and Developer Tools (519.8k followers) on Product Hunt. Together, these topics include over 105.7k products, making this a competitive space to launch in.
Who hunted Spicebag?
Spicebag was hunted by Marco Ryan Suseno. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Marco Ryan Suseno
Dear Product Hunters,
Spicebag turns a crypto seed phrase into a color-coded PNG and reads it back, word for word. Each word becomes one solid RGB cell in a grid, and the same phrase can be drawn as 10⁴⁷ to 10¹³⁹ different-looking images, so no two copies ever match.
I used to collect generative art NFTs, and I kept coming back to how strange it is that six figures of crypto usually sits on a strip of paper in a fireproof box. That box handles fire and floods, not people: anyone who opens it knows instantly what those words are worth. A random picture on your phone doesn't. Scatter the pixels across dozens of camera photos if you want, and put them back together only when you need to recover.
Decoding is the part I obsessed over, because a backup you can't trust isn't one. It validates the mnemonic checksum, rejects PNGs carrying palette, transparency, or ICC chunks, and fails loudly if lossy compression touched even one cell. You either get your exact phrase back or a rejection. It never guesses. BIP39, Electrum, SLIP39 supported, 12 to 33 words.
The optional salt runs through Argon2id at 256 MB of RAM per guess, expanded by domain-separated HKDF-SHA512. Never stored, any Unicode, no length cap. Guessing a seed phrase outright is much easier than cracking a salted image.
MIT, pip install spicebag, Windows/macOS/Linux. No network code at all. Nothing leaves the CLI, ever.
To be straight about the threat model, however; this won't save you from malware or anyone watching your screen. It's about what your backup looks like while it sits still.
Fun fact: this project was named after the iconic Irish-Chinese takeaway dish. You throw seasoning and salt into a bag and shake it. That's more or less what the encoder does.
Tell me where you'd hide yours. And roast the crypto, I want it to hold up.