Universe from Bitcoin block #421,617
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 | #421,617 | |
|---|---|---|
| Block hash | 0x000000000000000004e688f60fb29c9bd6e7bdad55b725d51209a3b259961047 | mempool.space |
| Block time | 2016-07-20 22:30 UTC | |
| Leading zeros | 17 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/139.27 | 0.984× ours (1/137.04) |
| Speed of light c | 243,453 km/s | 0.812× ours |
| Planck constant h | 5.254×10⁻³⁴ J·s | 0.793× ours |
| Elementary charge e | 1.275×10⁻¹⁹ C | 0.796× ours |
| Gravitational constant G | 6.042×10⁻¹² m³kg⁻¹s⁻² | 0.091× ours |
| Gravitational coupling αG | 0.141× 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 (421,617). 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.