# Sat Names Core Rules

Sat Names is a standard for writing names to Bitcoin using Ordinals Protocol with plain text format.

.sat Names is different from .sats Names which support JSON format to register names. 

These are the core rules of the .sat Names: 

**All .sat names lives on Bitcoin**

Bitcoin transactions, and only Bitcoin transactions, are all that is needed to register and update names.  Any client can independently compute the true state of all names by Bitcoin node.

**The first inscription** **of a name on Bitcoin owns the name**

For example, the first user inscribe an ordinal containing "satoshi.sat" owns that name. First is first.

**Case insensitive**

The indexer turns the name into lowercase. "ABC.sat", "abc.SAT" and "Abc.Sat" are the same for indexer.

**Only text/plain format**

Only text/plan format is supported, no json format. 


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