Reference
If you have used single-sided liquidity on another chain, most of your model carries over. Three parts of it do not, and they are the three that cost money.
01
Liquidity covers a span of prices. Put that span entirely above the market and it holds only the token you are selling — so as price rises through it, the pool hands the token out and gives you the other asset back. That is the whole trick: a sell order made of liquidity.
A band from +5% to +8% sells progressively across the entire span. There is no single price at which it executes.
02
Price rises through a band and it fills. Price falls back through it and it un-fills — you hold the original token again. Collecting is what takes the proceeds out and makes the fill permanent.
This is normal for this kind of liquidity everywhere, not something Echelon does differently. What it differs from is an exchange limit order, which stays filled.
03
Each pool defines the price lines a band may start and end on. On a 1% pool the finest expressible band is 2.02% wide, so asking for “sell at exactly +1%” is not something the venue can express. Edges snap outward, never inward, so a band can only get wider than you asked.
The builder shows the pool’s real minimum rather than accepting a number it will quietly widen.
04
An unfilled band is working liquidity, so it takes a share of the fees on everything that trades through the pool. That share depends entirely on what the pool actually trades — which is why a pool with no volume never fills a ladder and earns nothing.
No figure is quoted for this anywhere in Echelon, because any number would be a projection.
Custody
Each band is an NFT minted straight to your wallet. Echelon has no deposit, no vault and no balance of yours to hold.
Contracts
The builder is stateless and ownerless. It pulls the token, mints, refunds the remainder, and holds nothing when the transaction ends.
Status
This is new software handling real money, and a first ladder is worth placing at a size you would not mind being wrong about. The contracts have had no external audit.
Reality
Filling depends entirely on the market price moving into your bands. Nothing in Echelon can promise that, and a pool with no volume will not.
Nothing here promises a fill, a return, or a price.