Decasat black
The last sat of every 10,000th bitcoin: a sat s where s + 1 is divisible by 1,000,000,000,000 but not by 10,000,000,000,000.
How a sat qualifies
Sat s is a decasat omega when s + 1 is divisible by 1,000,000,000,000 (10,000 bitcoin) but not by 10,000,000,000,000. It is an omega, the last sat of a whole bitcoin, at a round number of bitcoin.
A sat has exactly one milestone tier, the highest, worked out on s + 1: megasat (100,000,000,000,000), else centasat (10,000,000,000,000), else decasat (1,000,000,000,000), else kilosat (100,000,000,000).
The first is sat 999,999,999,999, the last sat of block 199.
Why "black"
The fork's type is decasat_omega; the site labels it Decasat black, one of Black's rarest sub-categories, because these sats almost always close a block. Of the 1,890 there will be:
- 1,874 are plain black;
- 13 are black rare;
- 1 is black epic: sat 1,574,999,999,999,999, the last sat of block 419,999;
- 2 fall mid-block: sat 2,097,999,999,999,999 in block 2,110,400 and sat 2,098,999,999,999,999 in block 2,320,400.
The category matches by type, so it holds all of them; the black rare and black epic ones are never counted as Black.
Its pair
The sat right after each one is a Decasat uncommon of the same milestone tier. The site's pair rule counts a Decasat black sold with a Decasat uncommon as part of the uncommon's sale.
How many
Will ever exist: 1,890. Mined so far: 1,809. Extracted, held alone in small outputs: 195.
Supply and market
| Category | Will exist | Mined | Extracted | Last sale | Floor |
|---|---|---|---|---|---|
| Decasat black | 1,890 | 1,809 | 195 | 14,920 sats | 290,000 sats |
As of block 972,427. Prices are per sat.