Universe from Bitcoin block #421,336
Observers possible可能诞生观察者
Grade S · observers possible

Galaxies, stars, planets and chemistry all exist, and stars live long enough for complex processes to unfold. Under this model the conditions for observers are met. Only a few percent of blocks get this far.
| Bitcoin block | #421,336 | |
|---|---|---|
| Block hash | 0x0000000000000000050d7aeda7415224c0f9cbbe8565d1e67feee8c3768615f4 | mempool.space |
| Block time | 2016-07-18 22:01 UTC | |
| Leading zeros | 17 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/136.53 | 1.004× ours (1/137.04) |
| Speed of light c | 297,973 km/s | 0.994× ours |
| Planck constant h | 6.387×10⁻³⁴ J·s | 0.964× ours |
| Elementary charge e | 1.571×10⁻¹⁹ C | 0.981× ours |
| Gravitational constant G | 3.984×10⁻¹¹ m³kg⁻¹s⁻² | 0.597× ours |
| Gravitational coupling αG | 0.624× 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 (421,336). 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.