Crypto glossary
Rare sats
Rare sats are individual satoshis considered collectible under ordinal theory, such as the first satoshi of a block or of a halving period, traded at a premium.
Ordinal theory numbers every satoshi in the order it was mined and tracks it across transactions. Its creator also defined rarity levels based on Bitcoin's schedule: uncommon for the first sat of each block, rare for the first sat of each difficulty adjustment period, epic for the first of each halving epoch, legendary for the first of each cycle, and mythic for the very first sat of the genesis block. Collectors have added exotic categories, such as sats from the 2010 pizza transaction or from blocks mined by Satoshi Nakamoto.
Sat hunting became a hobby after Ordinals launched in 2023: users withdraw bitcoin from exchanges and scan their UTXOs with specialised wallets to find rare sats among them, then isolate and sell them on marketplaces. Some rare sats are also used as the base for inscriptions to increase their perceived value.
Bitcoin itself treats all satoshis as identical; rarity exists only in the eyes of collectors and indexers who follow ordinal theory. Prices depend on a niche market that can dry up quickly. Spending rare sats by accident in a normal transaction is easy without sat-aware wallets, and many offers of rare sats are overpriced or scams.
Example
A hobbyist withdraws 0.5 BTC from an exchange, scans it with a sat-hunting wallet and discovers an uncommon sat, the first satoshi of a block, which they isolate and list for sale.