This is a physical GENESIS BLOCK which includes the full encoding of the actual genesis block, containing the famous headline that Satoshi built Bitcoin on:

"The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"

It is made from a 4x4 speed cube, it is both a PUZZLE — commemorating the mathematical problem that is required to solve and mine a block — and is also a literal BLOCK!

If you run a full node, install hexyl, and try this command to get this beautiful output:

bitcoin-cli getblock 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f 0 | xxd -r -p | hexyl -n 256

The GENESIS BLOCK is based on the output of this command and is laid out in a logical way.

The “front” face (with Times headline) is encoded from the two adjacent sides on the left and right. Two columns of squares on each of the adjacent sides, encode to one column on the main face. AB on the “front” face are encoded from ab on the “FRONT LEFT” face, and CD on the “front” face are encoded from cd on the “FRONT RIGHT” face. The “back” face (and corresponding adjacent sides) are encoded in the same way.

There is currently only one other of these in existence. This is #2. I am committing to making only 21 of these, but will likely make less. This auction includes the 4x4 physical GENESIS BLOCK cube as well as a signed message printed on a business card to prove rarity. This is #2 of 21.

The business card message will be signed with the same address that I used to prove my original idea. The below image (including signing address) can be checked at https://proofofexistence.com to prove of my original idea, included in block #634716 (2020-06-14 23:14)

----- BEGIN SIGNED MESSAGE -----
I am GRNQRTR, auctioning off #2 of 21 of an original GENESIS BLOCk 4x4 cube on https://scarce.city
----- BEGIN SIGNATURE -----
Address: 1GRNQRtrdWchH5DUwcp8epKebMZNpfk8cK
G077/vst66lkck1LPDHCkxY/Wq99XI8j2Etiy7OvZYYDIAs1zFvlzQ5yD5cPUpJq54YgLtsRk0HDMWVV+/ohc5A=
----- END SIGNATURE -----

Materials: 1 x GENESIS BLOCK 4x4 speed cube w/ home printed and cut stickers.
1 x business card w/ signed message for rarity.

Dimensions: 6.5 x 6.5 cm

Weight: 136 g

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