Plain-English definition
Fees are receipts for paid activity. Someone paid to use the protocol, but one event, incentives, wash activity, or concentrated users can produce the same total. Persistent demand needs user breadth and retention as separate evidence.
Distinguish fees, what users pay in total, from protocol revenue, what the protocol retains, and tokenholder revenue, what reaches tokenholders through distributions, buybacks, burns, or other economic rights.
Why it matters
Fees matters because crypto markets can look precise while still being shallow, crowded, or poorly sourced. A useful read is not just the number. It is the number, the size behind it, the context around it, and the part it cannot explain.
Simple example
A simple Fees example is a reader comparing two venues with the same headline price but different depth. The deeper venue can absorb more capital before the trade, peg, or yield reading starts to move against the user.
How Bathymark uses this term
Bathymark uses Fees to translate open market data into live liquidity readings. When the term touches a live page, the reading links back to the relevant chain, protocol, stablecoin, DEX, perps, or Signal so the source remains checkable.
Common mistake
The common mistake is treating Fees as a complete signal by itself. Bathymark treats it as one instrument: useful when read beside liquidity, source, size, and what the number cannot prove.