Colophon
Cryptographic Arts is an online exhibition about the structure of cryptographic processes. It begins with Hal Finney's 1993 post, "Crypto trading cards," which imagines cryptographic objects as things worth examining for the mathematical arrangements they contain.
The exhibition is inspired by Finney's post and is not affiliated with him. It is not a collection of on-chain assets, NFTs, or Ordinals.
The algorithms produce the displayed state. The visual treatment makes their internal relationships perceptible without replacing the computation.
Methodology & Fidelity
The works use the browser's Web Crypto API for SHA-256 and secure random sampling. Small finite-group exhibits use exact modular arithmetic. Their values are intentionally inspectable and provide no production security.
Avalanche maps a 256-bit input to its 256-bit digest. One Way advances an iterated SHA-256 chain. Merkle builds eight hashed leaves and verifies the selected leaf's sibling path against the root.
Proof of Work tests successive decimal nonces against a chosen leading-zero-bit target. Elliptic Curve performs the group law on y² = x³ + 7 over the small field F₉₇, including the point at infinity.
Zero Knowledge runs the interactive Schnorr identification protocol and lets a no-witness prover attempt the optimal challenge-guess strategy. Schnorr combines two participants' values into one valid, educational transcript. It does not claim BIP 340 or MuSig2 compatibility. Post-Quantum generates, signs, and verifies a real Lamport one-time signature, then discards the used private key.
Each interaction changes a valid input, selects evidence, or advances a protocol. Animation presents state transitions but never supplies a cryptographic result.
Source Material
To: CYPHERPUNKS <CYPHERPUNKS@TOAD.COM> Subject: Crypto trading cards. From: Hal <74076.1041@CompuServe.COM> Date: 17 Jan 93 13:48:02 EST Giving a little more thought to the idea of buying and selling digital cash, I thought of a way to present it. We're buying and selling "cryptographic trading cards". Fans of cryptography will love these fascinating examples of the cryptographic arts. Notice the fine way the bit patterns fit together - a mix of one-way functions and digital signatures, along with random blinding. What a perfect conversation piece to be treasured and shown to your friends and family. Plus, your friends will undoubtedly love these cryptographic trading cards just as much. They'll be eager to trade for them. Collect a whole set! They come in all kinds of varieties, from the common 1's, to the rarer 50's, all the way up to the seldom-seen 1000's. Hours of fun can be had for all. Your friendly cryptographic trading card dealer wants to join the fun, too. He'll be as interested in buying your trading cards back as in selling them. Try this fascinating and timely new hobby today! Hal
Technical Record
- ArchitectureReact, TypeScript, Next.js
- CryptographyWeb Crypto API, BigInt modular arithmetic
- AnimationMotion
- TypographySystem Serif, System Sans, System Mono
- Design SystemTailwind CSS v4
Contact
Questions about the exhibition or its cryptographic structures are welcome through: