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NFT / Digital2021

Sliderverse × White Castle

Three editions side by side: #23 the castle background, #160 birthday fireworks, #5 a hundred sliders. Official renders.
Three editions side by side: #23 the castle background, #160 birthday fireworks, #5 a hundred sliders. Official renders.
Contents & work details
Archive year
2021
Type
NFT / Digital
Artist
Che-Yu Wu 吳哲宇
Commission
White Castle’s hundredth anniversary (United States, founded 1921); licensing agency Brandgenuity
Platform and contract
Doodle Labs’ Art Blocks Engine contract 0x28f2…3240, project #1 (Ethereum, fully on chain); the first brand partnership on Art Blocks’ generative minting technology
Editions
1,285 minted against a ceiling of 5,001; #0 to #1284
Release
Minting opened on 15 December 2021 with SLIDER-token redemptions for Family Mooks holders; public sale on 17 December at 0.1 ETH, 1,045 editions that day; the last on 7 October 2022
Technology
p5.js 1.0.0, fully on chain (a 134 KB script in eighteen chunks); one brush per ingredient and a physics simulation to stack the meal; a lo-fi beat synthesised in pure Web Audio; WebGL noise and halftone textures
Keys
Drag the sliders; click for a beat; space or double-click sends them all flying; S saves, T toggles the canvas texture, M toggles the music
Charity
A share of proceeds to the Ingram-White Castle Foundation’s team-member relief and scholarship funds
Licence
CC BY-NC 4.0; trademarks belong to White Castle
Database
The 1,285 hashes, trait shares and official renders
Original page & interactive experience

Someone online who was starting a company in New York messaged me out of the blue; we had a meal, and that was how it began: White Castle was turning a hundred and wanted a set of NFTs. What they had in mind was collages of illustrations, which looked like flyers; I proposed painting the burgers with mathematics, with the feel of a brush. Every ingredient is a brush of its own: bacon curls the way bacon does, the bun is thick and dotted with sesame, and each stroke starts with a random momentum and rotation, so no two burgers are alike; then, following the whole menu, fries, onion rings, chicken rings, shakes and sodas are added, and a physics simulation stacks them into a meal. The burgers also sing: each stroke is a note from a chord, each burger a track, and the kick, snare and hi-hat are synthesised live in the Web Audio API without a single sample, a lo-fi beat of its own for every edition. White Castle kept telling me the burger did not look like theirs, and I kept reshaping it.

It was torn apart. People who knew my earlier work saw burgers at the end and found it far too commercial, Andy Warhol’s soup cans. I still think it was ahead of its time technically: the whole work lives on chain, it was the first brand partnership built on Art Blocks’ generative minting technology, and on 17 December 2021, the day of the public sale, one thousand and forty-five editions were minted. I do not mind whether it is famous; what I mind is whether every piece of work tries something new.

  1. 01

    hash

    Sixty-four hex digits from the chain; the first sixteen become a seed for an xorshift generator

  2. 02

    The menu

    Colour theme, background, logo, slider count, doubles, side, drink and easter egg, drawn by weight

  3. 03

    Each slider

    Its own layers of bun, patty, cheese, bacon, egg, onion, pickle, veggie patty, chicken, waffle and fish

  4. 04

    Brushes

    One brush per layer: bacon curls, the bun is thick and sesame-dotted, every stroke starts with random momentum and spin

  5. 05

    Stack it

    A physics simulation stacks the layers and sides, then WebGL noise and halftone textures and a canvas weave go on top

  6. 06

    Sing

    A note per stroke, a track per slider; drums, beat length and reverb all from the same seed

Sliderverse #0: Edition zero: the first mint, two sliders and a red soda
#0Sliderverse經典
hash0x31091dd13c80364d6dd140bce43d1f13e188b51e3d0c12b0f3e91687ac155b77
EF8903ffffff223D96020316
colour theme
Classic84%
background
Solid35%
logo
Main94%
sliders
222%
double sliders
074%
side
none51%
drink
Red soda11%
special
none96%
Sliderverse #23: The castle background: one of twenty-three
#23Sliderverse經典
hash0x73e1cb258d278e75335680ad00a2ebbcb00b5730251ff767f88b0460c3f2e2e6
EF8903ffffff223D96020316
colour theme
Classic84%
background
Castle2%
logo
Main94%
sliders
319%
double sliders
074%
side
none51%
drink
none49%
special
none96%
Sliderverse #160: The birthday background with the centenary logo and fireworks
#160Sliderverse鮮豔
hash0x6ee2b2997a21c50388527128d64008a4029fad382e35470685cd2f68687f1324
0060A900A9E000BFB3FC4C02F7971CFFB81C000000ffffff
colour theme
Vibrant16%
background
Birthday1%
logo
Birthday6%
sliders
222%
double sliders
120%
side
Chicken rings11%
drink
none49%
special
none96%
Sliderverse #5: A hundred sliders
#5Sliderverse鮮豔
hash0x71f7ddf7b30155394094c91400c46a704c74c09533064c1cc724b4b8b7ebdc74
0060A900A9E000BFB3FC4C02F7971CFFB81C000000ffffff
colour theme
Vibrant16%
background
Comic9%
logo
Main94%
sliders
100<1%
double sliders
7<1%
side
none51%
drink
none<1%
special
none96%
Sliderverse #28: The Sea Ham easter egg: one of nine
#28Sliderverse經典
hash0xbb0f48e02603b444f8d5a65fd7b5ab6752366269d9e569601560cf70931ee49a
EF8903ffffff223D96020316
colour theme
Classic84%
background
Comic9%
logo
Main94%
sliders
131%
double sliders
120%
side
none51%
drink
Red soda11%
special
Hamily<1%
Sliderverse #99: Pochi fries: one of fourteen
#99Sliderverse經典
hash0x1563640de9404fcf4b205989578412b40cb7a38c4e41a797d03cf0b70addcb0a
EF8903ffffff223D96020316
colour theme
Classic84%
background
Stripe15%
logo
Main94%
sliders
131%
double sliders
074%
side
Fries17%
drink
Orange soda13%
special
Pochi1%
Sliderverse #58: The pixel easter egg
#58Sliderverse經典
hash0x0cce84b91d6a47b73b621f2efe48aeedb43f31c74377f845389e254df9745886
EF8903ffffff223D96020316
colour theme
Classic84%
background
Solid35%
logo
Main94%
sliders
319%
double sliders
24%
side
Chicken rings11%
drink
Clear soda10%
special
Pixel1%
Sliderverse #649: The Vibrant palette, twenty sliders
#649Sliderverse鮮豔
hash0x37182756c4605619eaf9b7b35970c0d60ff139c46ceff94fb931a42f63146383
0060A900A9E000BFB3FC4C02F7971CFFB81C000000ffffff
colour theme
Vibrant16%
background
Wave6%
logo
Main94%
sliders
201%
double sliders
120%
side
none51%
drink
none49%
special
none96%

A share is the count of that trait among the 1,285; the pictures are the official renders of the day.

Taking a burger apart into brushes

The proposal of 9 November 2021 says it plainly: take the burger apart into layers and materials, and give each layer a brush with its own physical character. The first simulation was a test of how the brush would look, and it came out too close to another burger chain’s, so we called an emergency meeting and changed it. Only after the layout was designed did the algorithm in the middle get built, and that part runs on experience: how to make p5.js feel organic and soft rather than hard and geometric. The whole pipeline grew out of the Electriz project on Art Blocks, the same pinned randomness and the same chunking tools, except that this script runs to eighteen chunks and 134 KB, with the White Castle logo and the birthday fireworks written on chain too.

One hash decides one meal: the Classic or the Vibrant brand palette, ten backgrounds (solid, stripe, grid, comic halftone, dot, wave, two brushes, the castle in twenty-three editions, the birthday in thirteen), one to a hundred sliders, a side, a drink, and four easter eggs: pixel, dot, nine editions hiding a Sea Ham robot, and fourteen whose fries grow Pochi faces.

Burgers that sing

The sound is generated entirely from data, without a single sample. The reference at proposal time was Brian Eno’s Music for Airports: each stroke is a note from a chord, each burger a track in the score. The on-chain build carries eight melody sets and three middle sections, four drum patterns, two snare and two hi-hat patterns, a beat length drawn between 0.15 and 0.3 seconds, and a reverb computed offline. A click on a burger triggers a beat, dragging gives it velocity, and the space bar sends every burger flying at once.

Making Soul Fish in August 2022 I said: choose a scale, reorder it, leave gaps, and it becomes a repeating melody, much as the burgers had done; Sliderverse and SoulSea were both attempts to synthesise sound in the Web Audio API.

Fries
Pochi fries: one of the easter eggs
Sea Ham: the easter egg in nine editions
  1. 01

    9 November 2021

    The proposal: layers and materials as brushes, generative sound design

  2. 02

    29 November 2021

    The repository opens: make hamburger obj, add some beats, play with cheese

  3. 03

    9 December 2021

    After Dinner Mints episode 29, still under wraps: “something about hamburgers”

  4. 04

    15 December 2021

    Minting opens with SLIDER redemptions for Family Mooks holders, 131 that day

  5. 05

    16 December 2021

    The PR Newswire release, picked up by Fox Business and Yahoo Finance

  6. 06

    17 December 2021

    Public sale at 0.1 ETH, 1,045 editions that day

  7. 07

    7 October 2022

    The last edition, #1284

  8. 08

    July 2023

    The Doodle Labs site is captured by the Wayback Machine for the last time, and stops answering after

  9. 09

    September 2024

    Fries, shakes and Sea Ham elements re-rendered on transparent ground for merchandise

  10. 10

    20 September 2026

    The on-chain script self-hosted, all 1,285 official renders kept, the database published

Original work record

Original text: the work introduction on the Doodle Labs site in 2023 (kept verbatim; the pre-launch version of 2021 ended “to find the intersection between food, art, and culture” and had no charity paragraph yet).

In honor of White Castle's 100th Birthday, renowned multimedia artist Che-Yu Wu has reimagined the White Castle menu through a generative art lens. Each unique edition within this series of collectible NFTs is generated by an algorithm at the time of mint, pushing the boundaries of physics, mathematics, and art. This series combines Che-Yu's signature, interactive style with White Castle's legendary sliders to explore the intersection between food, art, tech and culture.

And in keeping with White Castle's spirit of feeding the souls of their communities and team members, a portion of the proceeds from Sliderverse will directly benefit our Team Member Relief Fund and the Ingram-White Castle Team Member Scholarship.

Notes are live things and our own pages, tags the platforms and records, clippings the press; every one opens.

Credits

Artist: code, visuals, music
Che-Yu Wu (p5.js 1.0.0, Web Audio, GLSL)
Commission
White Castle (centenary); licensing agency Brandgenuity
Platform and release
Doodle Labs (Art Blocks Engine contract, SLIDER redemption, public sale)
Technology
Art Blocks generative minting technology; one engineer on the render pipeline (December 2021)
Charity
The Ingram-White Castle Foundation: team-member relief and scholarship funds
Self-hosting and database, 2026
A byte-identical copy of the on-chain script with p5 1.0.0; all 1,285 official renders kept
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