26/n Layer 12: The Halving Ruler
This ruler tracks every 2,016 blocks between each difficulty adjustment, and every 210,000 blocks between Halvings.
Calendar Years: 132 (green )
Difficulty Adjustments: 3,437 (blue )
Reward Eras: 34 (purple )
Block Height: 7,000,000 (red )
27/n Layer 13: Satoshi’s Equations
This ring contains all of the mathematical equations found in the Bitcoin white paper.
28/n Layer 14: Calendar
This ring is very simple, it tracks regular calendar time, over 365.4 days/year. It tracks month and day for use in linked timestamping through Merkle trees.
29/n Layer 15: Block Confirmation Time
In this layer we look at the Poisson distribution of block confirmation times. Some blocks take more time and some take less, but the network strives for an equilibrium at 10 minutes per block.
30/n Inside the main circle with the Bitcoin logo, we have “hard coded” the genesis block into the full node, just like in every bitcoin full node:
scriptPubKey
Merkle Root
Block 0 Tx hash
Satoshi’s First Address — 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
31/n Layers 16 to 19: Block Reward Eras
Here we can clearly see the bitcoin block reward eras divided into
Three Double-Digit Reward Eras (50, 25 and 12.5 BTC per Block)
Three Single-Digit Reward Eras (6.25, 3.125, 1.56)
28 Sub-Full Bitcoin Reward Eras (less than 1 BTC per block
32/n Layer 20: Bitcoin Issuance Ruler
Tracks bitcoin issuance (from zero at the center) up to 21 million over time.
Layer 21: Bitcoin Halving Era Ruler
Tracks the Halving reward eras in which bitcoin is issued (from zero to 34, even though 64 Halvings are in the source code)
33/n The Back: Bitcoin Signed COA (Certificate of Authenticity)
I was able to sign a message on-chain, and hide it inside a CoinJoin transaction.
This message, the COA itself, is stored immutably on the Bitcoin blockchain forever
34/n Here’s the transaction hash: 32dab765d6b5ffbc2bcd4e14adfb261e040b40be5f084415ce06a3ba9605a8f6
You can see my “creator address” — 1KZ8q6HKdTc1DsENqu722sDkrALGpdFXLi — below in the signed message, you can also see it as an input in the above transaction.
35/n And this is all engraved on the backside of the sculpture:
36/n What's next?
I’m currently working on a project that will allow live Bitcoin network data to be light mapped onto the full node sculpture (using projection mapping techniques).
37/n Wow still here with me? WTF, sweet! Well if it's before 3:33PM EST on Feb 6th, 2021 when you're reading this, head on over to the auction, and we're livestreaming at 3PM scarce.city/products/full-…
38/n @cryptograffiti this thread is for you! Thanks for the advice once again. He saved y'all from having to leave twitter to get this content ;)
1/n
Follow me down the #Bitcoin rabbit hole in this tweet thread and we'll break down all 21 layers in the Bitcoin Full Node Sculpture 4.0 A Cypherpunk Chronometer.
2/n The Bitcoin Full Node Sculpture is a cypherpunk chronometer, designed to work as a fully-functioning bitcoin full node and block explorer. Modeled after the ancient navigation tool, the astrolabe, it acts as a compass for the humble bitcoiner to set to true north.
3/n Visualizing the clock-and-calendar-like nature of Bitcoin stretching over 132 years, the sculpture represents a digital metronome ticking endlessly in the halls of time. This cyber-metronome ticks at a steady pace of “every 10 minutes,” in perfect harmony with Bitcoin time.