Universe from Bitcoin block #421,620
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 | #421,620 | |
|---|---|---|
| Block hash | 0x0000000000000000006ea1ff27679ba255da2d46a5e5aa8af98c6e347e9bb14d | mempool.space |
| Block time | 2016-07-20 22:55 UTC | |
| Leading zeros | 18 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/137.37 | 0.998× ours (1/137.04) |
| Speed of light c | 308,944 km/s | 1.031× ours |
| Planck constant h | 6.833×10⁻³⁴ J·s | 1.031× ours |
| Elementary charge e | 1.650×10⁻¹⁹ C | 1.030× ours |
| Gravitational constant G | 3.947×10⁻¹¹ m³kg⁻¹s⁻² | 0.591× ours |
| Gravitational coupling αG | 0.558× 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 (421,620). 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.