BuildBuddy Computer
The hub machine, its memory stack, the 49 silos and the End castle, decoded block by block from copies of the worlds and checked three ways. The original page is a live 3-D viewer over about 50 MB of decoded world; this level keeps its findings.
Three kinds of evidence
What is decoded from the world files and drawn: every block, newest record wins.
Computed from that geometry: a graph walk over the wiring, not a simulation.
A Bedrock engine run on record, quoted from its log. Nothing below is a plan.
Does it work?
The 49 silos
Geometry: 49 columns of 2,065–2,198 blocks, 104,084 in all; wire on 383 of 383 levels, 504 dust and 48 repeaters each.
Check: the redstone line is one connected path from the top cell to the bottom in 49 of 49 silos, none broken.
Engine: a signal carried top to bottom; delay-line memory 7/7 per group, sandbox only.
Limit: no bit cells in the live world. The silos conduct; they do not store.

The calculations
Geometry: 85,917 wire and 7,909 repeaters in the hub; the stack holds exactly 128 copper bulbs = 16 layers × 8 bits.
Engine: Fibonacci 1, 1, 2 … 144, 233, each term PASS; stored program PASS; RAM, carry, branch: 0 failures; Nether NOT, AND, OR, XOR and full adder done; program counter sequence 0, 5, 8, 9, 16 as expected.
Limit: no engine run on the live world since the 1 October install.

The castle
Geometry: 1,846,746 blocks in the End: end bricks, dome glass, lotus gold, the Bifröst.
Design versus built: the dome is 584,419 of 584,419 cells, 100%. The castle tiles are 94.9% the same block, 4.5% re-skinned in finishing, 0.6% missing, plus about 27% more detail on top.
Limit: "works" means built as designed with its door script passing its tests. It computes nothing.
The network and the copies
- Group circles
- 799.9–100% built
- Spokes and trunks
- 1499.2–100%
- Silo annuli
- 49100%
- Feeder to Silo 1
- 72.6%partial
- World copies traced
- 28neighbor-joining tree
The viewer measured how far each of the 28 saved world copies is from every other, and drew their family tree. The live world before the 1 October install was the untouched original; the largest single step in the project was the berm stage, which added 2,027,888 cells; and the Upside Down line joins the World line only at the root.
Since then
On 14 October the silo grew a wall and a stair: a ring at radius 86 from y −45 to 236 (147,324 blocks, every sample read back), one stair turn per floor across eight floor plates, rooms on every plate, and wool ducts casing the machine's wiring so no circuit could change. After the day's builds the full regression ran again: ten of ten programs passed. The snapshot this page describes is behind by design: the live world keeps changing.