Ordinals Rarity Guide — Sat Rarity Explained

Not all satoshis are created equal. Ordinal Theory defines a rarity system based on Bitcoin events. Some satoshis are special because of when they were mined. The rarest satoshi is the very first one ever created.

Rarity adds collectibility to Ordinals. Inscriptions on rare satoshis are considered more valuable, similar to how a painting on a rare canvas might be worth more. Understanding rarity helps collectors and creators make informed decisions.

There are six rarity levels, from most common to most rare:

• •Common — Any satoshi that is not the first of its block (supply: 2.1 quadrillion)
• •Uncommon — The first satoshi of each block (supply: ~6,929,999)
• •Rare — The first satoshi of each difficulty adjustment period (supply: ~3,437)
• •Epic — The first satoshi of each halving epoch (supply: 32)
• •Legendary — The first satoshi of each cycle (supply: 5)
• •Mythic — The first satoshi of the genesis block (supply: 1)

The mythic satoshi is the very first satoshi Satoshi Nakamoto ever mined.

Rarity is based on Bitcoin's predictable event schedule:

• •Blocks are mined approximately every 10 minutes
• •Difficulty adjustments happen every 2,016 blocks (~2 weeks)
• •Halvings happen every 210,000 blocks (~4 years)
• •Cycles are the combination of halving and difficulty adjustment alignment

Each of these events marks a special satoshi with a higher rarity tier.

When you inscribe on a rare satoshi, the inscription inherits that rarity. This means:

• •An inscription on an uncommon sat is more collectible than one on a common sat
• •Rare sat inscriptions are highly sought after
• •Epic and above are extremely valuable and scarce

Some collectors specifically seek out inscriptions on rare sats, creating a premium market.