Universe from Bitcoin block #73,273
No carbon chemistry无碳-水型生物化学的宇宙
Grade A · no observers

Stars and chemistry both work here, but not the kind that leads to carbon-based life. Either the triple-alpha process in stars fails to produce carbon and oxygen, or there is no temperature window in which water stays liquid.
| Bitcoin block | #73,273 | |
|---|---|---|
| Block hash | 0x000000000056c6f223f532cb4099c479682a09d6633a404fa66458393c4e3e2a | mempool.space |
| Block time | 2010-08-09 21:36 UTC | |
| Leading zeros | 10 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/137.29 | 0.998× ours (1/137.04) |
| Speed of light c | 338,747 km/s | 1.130× ours |
| Planck constant h | 6.273×10⁻³⁴ J·s | 0.947× ours |
| Elementary charge e | 1.656×10⁻¹⁹ C | 1.033× ours |
| Gravitational constant G | 1.370×10⁻¹² m³kg⁻¹s⁻² | 0.021× ours |
| Gravitational coupling αG | 0.019× 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 (73,273). 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.