Universe from Bitcoin block #421,401
Big Crunch大挤压
Grade A · no observers
The expansion of this universe does not last. Gravity wins, the expansion halts and reverses, and everything is compressed back toward a single point. Whatever structure formed on the way out is destroyed on the way back.
| Bitcoin block | #421,401 | |
|---|---|---|
| Block hash | 0x000000000000000004688059c73d80f18acb817c64c7cf1b6b798a5293dbf5e4 | mempool.space |
| Block time | 2016-07-19 10:24 UTC | |
| Leading zeros | 17 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/139.71 | 0.981× ours (1/137.04) |
| Speed of light c | 412,768 km/s | 1.377× ours |
| Planck constant h | 9.468×10⁻³⁴ J·s | 1.429× ours |
| Elementary charge e | 2.226×10⁻¹⁹ C | 1.389× ours |
| Gravitational constant G | 8.382×10⁻¹¹ m³kg⁻¹s⁻² | 1.256× ours |
| Gravitational coupling αG | 0.637× ours |
Constants are reported in an external frame. Only α and αG are observable from inside the universe; c, h, e and G can be rescaled without changing what its inhabitants could measure.
Not minted yet — the first confirmed transaction owns it.
On-chain, this universe lives in the same MirrorUniverse contract on BNB Chain as every BNBBANG universe, with blockHash = the Bitcoin block hash and blockNumber = its Bitcoin height (421,401). The contract’s verified flag is false for every Bitcoin-origin universe: BNB Chain cannot look up a Bitcoin hash, so the flag simply does not apply — that is the expected state, not an error. Anyone can confirm the origin by fetching this height from any Bitcoin node or explorer and comparing the hash.