Universe from Bitcoin block #208,513
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 | #208,513 | |
|---|---|---|
| Block hash | 0x00000000000001886fc31ac62df9959b007d18e0c25df7712aac47037c50a40e | mempool.space |
| Block time | 2012-11-18 20:00 UTC | |
| Leading zeros | 13 hex digits | |
| Dimension D | 3.000 (integer) | ours 3 |
| Fine-structure constant α | 1/137.90 | 0.994× ours (1/137.04) |
| Speed of light c | 221,025 km/s | 0.737× ours |
| Planck constant h | 9.465×10⁻³⁴ J·s | 1.428× ours |
| Elementary charge e | 1.639×10⁻¹⁹ C | 1.023× ours |
| Gravitational constant G | 5.766×10⁻¹¹ m³kg⁻¹s⁻² | 0.864× ours |
| Gravitational coupling αG | 0.829× 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 (208,513). 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.