A 4-inch purpleheart cube contains exactly 21,000,000 unit subdivisions — the same number as the Bitcoin supply limit. This isn't coincidence. It's the object designed around the equation.
The whole cube. Every unit if the object were solid and undivided.
6 × 64² = 24,576
Six faces, one per halving era. Each face carves the same pattern: 1 square of 64, then 4 of 32, 16 of 16, 64 of 8, 256 of 4, 1,024 of 2. Count doubles, size halves — Bitcoin's issuance rendered in wood. Per face, the carved area is always 64².
= 21,000,000
What remains. The provable cap. The ledger in hardwood.
FACE I1 × 64
FACE II4 × 32
FACE III16 × 16
FACE IV64 × 8
FACE V256 × 4
FACE VI1,024 × 2
§ II — THE OBJECT
Solid purpleheart. Laser-engraved. Signed.
Six faces. Each face is a grid. Each grid encodes a Bitcoin halving era — the Genesis block, the first halving, and the four that followed.
Solid purpleheart — a dense tropical hardwood, one of the species Bitcoin Timber works with. Kiln-dried, laser-engraved, hand-signed on the base.
Material
Solid purpleheart, kiln-dried
Dimensions
101.6mm × 101.6mm × 101.6mm (4" × 4" × 4")
Engraving
CO₂ laser, six faces
Signature
Hand-signed on base by the artist
Edition
21 total. Never reprinted.
Includes
Certificate of Authenticity, signed by both artist and founder
SIGNED & NUMBEREDEDITION OF 21
§ III — THE ARTIST
Anik Malcolm.
PORTRAITANIK MALCOLM · 2026
Anik is the artist and mathematical mind behind The Whole Entire Universe. His work sits at the intersection of number theory, visual geometry, and obsessive craft.
He drew the original grids that became the six faces of this cube. The equation — 276³ − 6×64² = 21,000,000 — is his. The cube exists because he saw it first.
"It's always 276 in length. First square is 64, then two 32s 32 apart, then four 16s 16 apart, and on."
Anik came to me with the math already worked — 276³ − 6×64² = 21,000,000, the cube in his head. My job was the material.
Purpleheart was the only answer. Dense, dark, and pulled from the same rainforest corridors the Canje mill is cutting from — a three-generation project resurrecting a family sawmill in Guyana, powered by Bitcoin mining.
The mill, the energy stack, the ASIC fleet — still being assembled. This is the first physical artifact out of the project. This one, you can hold.
The BlankEngraved DetailThe CubeFull View
§ V — THE EDITION
How it works.
Twenty-one cubes. Three released at Bitcoin 2026 Las Vegas. Eighteen shipped directly from the artist to collectors within 30 days after.
01 / 03
Claim
Check out with Bitcoin via Lightning or on-chain. Your edition number (X / 21) is assigned at checkout, and the Bitcoin block height at the moment of purchase is stamped onto your Certificate of Authenticity.
02 / 03
Sign
Three cubes are signed live at Bitcoin 2026 and hand-delivered. The remaining eighteen are shipped to Anik, signed personally on the base, then shipped to you.
03 / 03
Ship
Each cube is packed with its Certificate of Authenticity, signed by the artist and the founder. Remaining editions ship within 30 days of the Vegas close.
§ VI — CLAIM
One cube. Your number.
Paid in sats. Shipped worldwide. The edition doesn't reopen.
Your edition number is locked in at checkout and printed on your Certificate of Authenticity. Three cubes are reserved for in-person sale at Bitcoin 2026 Las Vegas; the remaining eighteen are sold through this page.
When does my cube ship? +
Three cubes are available in person at Bitcoin 2026 (April 27–29, Las Vegas). The remaining eighteen ship to Anik for signing after the conference, and then out to buyers. Target window: within 30 days of the Vegas close.
Is this physical, or is there a digital version? +
Physical only. There is no NFT, no digital twin, no on-chain certificate. The cube is wood. The signature is ink. The edition number is engraved. By design.
What's the Bitcoin block stamp on the certificate? +
At the moment your invoice is paid, we capture the current Bitcoin block height and the short hash of that block. Both are printed on your Certificate of Authenticity. It fixes your cube in Bitcoin time, independent of any calendar date — a permanent, auditable timestamp anchored to the chain itself.
Why purpleheart? +
Purpleheart is a dense tropical hardwood native to the same rainforest corridors of the Guianas where Bitcoin Timber is resurrecting its family sawmill. It cuts clean under a CO₂ laser, takes a signature well, and its color deepens with age. The blanks for this edition were sourced from a specialty lumber supplier; future editions will ship from the Canje mill.
International shipping? +
Yes, worldwide. Shipping is insured above the sale price. International buyers are responsible for any import duties in their country. We'll email you a tracking number the moment your cube leaves Anik's studio.
Can I resell it? +
Your cube, your call. The edition is finite and we'll never reprint, so secondary market activity is up to collectors. If your cube finds a new home, we'd love to hear where it landed.
Who made this? +
A collaboration between Anik Malcolm (artist, concept, mathematics) and Bitcoin Timber (material, production, fulfillment). Revenue is split 50/50 between the artist and the project. The Bitcoin Timber half feeds directly into the Canje River sawmill resurrection.
