Nakamoto black
The last sat of each of the 19 Nakamoto blocks, sat h × 5,000,000,000 + 4,999,999,999 for block h: nineteen black sats in all.
How a sat qualifies
The row's definition is Nakamoto and black: the last sat of one of the 19 Nakamoto blocks. Each paid 50 BTC, so the last sat of block h is sat h × 5,000,000,000 + 4,999,999,999: 49,999,999,999 for block 9, up to 145,489,999,999,999 for block 29,097.
Black tiers are exclusive: a last sat that ends a difficulty adjustment period is black rare, not black. That happens when h + 1 is a multiple of 2,016, which is true of none of the 19 blocks, so all 19 last sats are black and the total is 19.
Each is also an omega, the last sat of a bitcoin, and in Nakamoto omega too. The last sats of blocks 2,459 and 3,479 (12,299,999,999,999 and 17,399,999,999,999) end a multiple of 1,000 bitcoin and are also Kilosat blacks. Those of blocks 9, 286, 688 and 877 are also vintage blacks.
Why collectors care
There are only nineteen, one closing each block the site attributes to Satoshi Nakamoto, each followed by the next block's first sat.
On this site
Nakamoto black is shown as one of Black's rarer sub-categories: Black holds every sat of it.
How many
- Will ever exist: 19, all mined.
- Extracted, each held alone in a small output: 1.
- Addresses holding one: 19.
Supply and market
| Category | Will exist | Mined | Extracted | Last sale | Floor |
|---|---|---|---|---|---|
| Nakamoto black | 19 | 19 | 1 | — | — |
As of block 972,427. Prices are per sat.