CrownSPV - is the world's first Seed Phrase Visualizer.

SPV - 256 - is a visual tool that transforms cryptographic entropy into pixel art.

Designed to encode BIP-39 seed phrases (24 words) and 256-bit HEX values (64 characters) into a 16×16 pixel grid .

How it works:

Enter a 24-word seed phrase and 64-character HEX

Each bit is converted into a pixel (0 or 1)

You can manually customize pixel colors and grid background

1 must always be darker than 0 (a warning appears otherwise)

You can clear the canvas and start over

You can also draw manually and get the corresponding seed and HEX

On an airgapped machine, you can even generate entropy by flipping a coin

Why it matters:

Forget uploading random images from the internet into Ordinals or NFTs.

Now you can create your own authentic, cryptographic art.

Every PNG generated is either a real 24-word seed phrase and its raw entropy in HEX.

This ensures zero plagiarism.

Plagiarism is a huge problem in the Ordinals and NFT market. SPV-256 - is a huge step towards "clean" crypto art

You're literally drawing with seed phrases — a completely new way of using them.

Change just 1 pixel — and you’ve created a new seed.

Total number of possibilities:

2^256 ≈ 1.1579209 × 10^77

Estimated number of atoms in the Universe: ~10⁸⁰
Estimated number of molecules: ~10⁷⁷

The number of valid BIP-39 seed phrases is comparable to the number of molecules in the universe.
It’s astronomical.

Looking forward:

As BTC and inscription costs rise, marketplaces will likely adopt on-the-fly grid generation:

Users will just submit a seed or HEX , and the grid will be rendered client-side.

This will:

Reduce costs

Ease blockchain load

Until then — you can already inscribe truly unique PNGs.

PNG Export:

One-click save as PNG

The PNG contains:

Precise 16×16 grid

The actual PNG size is 323 × 323 pixels. The file size is 5,000–7,000 bytes.

After lossless compression, it reduces to ~350 bytes.(–95%)

Custom colors

Auto warning if color 1 is lighter than color 0 (to prevent misreads)

Use cases:

Visual seed backups (alternative to paper)

Unique pixel art for Ordinals

Visual cryptography & private data encoding

Experiments with generative Bitcoin entropy

⚠️ Important:

Never enter real wallet seed phrases with funds online.

📎 Project Author:

Twitter: https://x.com/CrownSPV

GitHub: https: github.com/crownspv/seed-phrase-visualizer-256

Gmail: crownspv@gmail.com

Aleksandr Yashchuk.

Examples

Seed Phrase

twelve twelve twelve twelve twelve twelve twelve twelve twelve twelve twelve twelve world world world world world world world world world world world world

HEX

eb1d63ac758eb1d63ac758eb1d63ac758fdbfb7f6fedfdbfb7f6fedfdbfb7f6f

Color 1-red, Color 0-white

Seed Phrase

zoo winter about language swim disagree wheat replace horror view gas adapt despair sea alien abuse morning method observe always blossom abstract zoo transfer

HEX

ffff8001be7dbe7dbe7db66dbe7d800183c183c190098ff1866183c18001ffff

Color 1-black, Color 0-white

Seed Phrase

abandon amount absorb abandon hybrid always about theme disease advance scan wrap cable limit winter zoo avocado wedding zone lend wave zoo zoo unknown

HEX

000100030007000f001f003f007f00ff01ff03ff07ff0fff1fff3fff7fffffff

Color 1-blue, Color 0-yellow

Seed Phrase

zoo winter about zoo zoo zoo quantum zoo zoo zoo theme adapt despair sea alone zero pumpkin project about average blossom abstract zoo used

HEX

ffff8001ffffffffebd7ffffffff800183c183c1bffdadb5800187e18001ffff

Color 1-black, Color 0-white

Seed Phrase

primary famous fever fetch pipe print primary enjoy fiber fetch next prize primary click find fetch fetch pull pride primary follow festival fetch pool

HEX

aaaa5555aaaa5555aaaa5555aaaa5555aaaa5555aaaa5555aaaa5555aaaa5555

Color 1-blue, Color 0-white

Seed Phrase

zoo winter about language swim disagree super result laundry view gas adapt despair size chat accuse morning method observe always blossom abstract zoo view

HEX

ffff8001be7dbe7db66dbe7dbe7d800183c193c9b00d8ff1866183c18001ffff

Color 1-red, Color 0-white

Seed Phrase

enjoy over narrow shuffle over endorse step mask build release misery turkey remove switch power transfer pioneer female ignore ankle rule help sustain hockey

HEX

4ab3be4c63b9de93b55c431dd6a636f55b5fb86a5739a52a9dc3049bd2d636bb

Color 1-black, Color 0-white

Seed Phrase

zoo winter about language swim depart wheat remind laundry view gas adapt despair sea alien abuse morning metal gather adapt blossom abstract zoo tunnel

HEX

ffff8001be7dbe75be7dae7dbe7d800183c183c190098ff1818181818001ffff

Color 1-blue, Color 0-white

Seed Phrase

A seed phrase (also called a mnemonic phrase or recovery phrase) is a unique string of words that is generated by a cryptocurrency wallet and used to restore access to the wallet and its associated digital assets if the primary device is lost or crashes. It is like a "master key" for the wallet, allowing you to regain access to your funds even if you do not have access to the device itself or the application.

Generated by the wallet:

The seed phrase is generated by the wallet when it is created. It is a set of words chosen from a predefined list and is the key to your private keys, which in turn control access to your digital assets.

Importance:

The seed phrase is a key security and recovery element for wallets using deterministic hierarchical (HD) wallets. It allows you to regain access to your assets even if you lose the device on which the wallet is stored.

Length and format:

The seed phrase is usually 12 or 24 words long and should be written down in the order it was generated by the wallet.

Security:

The seed phrase should be kept securely as it is the only way to restore access to the wallet. It should not be stored in an easily accessible place or shared with anyone as this may put your funds at risk.

How it works:

When you create a new wallet, it generates a seed phrase, which is a derivative of a random number. This number is used to derive other keys that allow you to spend funds in your wallet.

Overall, the seed phrase is a reliable and easy way to restore access to your crypto assets if you lose your main wallet or the device it was installed on.