It lives at the swap layer
ECHO is a Uniswap v4 hook. A buy opens or deepens the echo, a sell clears it — the swap itself is the event. No manual rounds, no off-chain trigger, no game controller.
UNISWAP V4 HOOK · $ECHO
Every buy leaves an echo.
Every sell resets it.
Most tokens treat swaps as isolated events. A buy happens, a sell happens, the chart moves, and the event disappears.
ECHO changes that. Every buy becomes part of the active echo — you don't just buy a token, you enter the current cycle.
The first buyer becomes the first position in the active cycle.
A part of the fee from Buy #2 reflects back to Buy #1.
Part of the fee reflects back to Buy #1 and Buy #2.
Part of the fee reflects back to every earlier position in the cycle.
Buy to open and grow the echo — watch each new buy ripple backward through every earlier position. Then sell, and the echo resets.
The first buy opens the echo. Every buy after it reflects backward.
When a sell happens, the active echo is cleared. Current positions are reset, the cycle ends, and the next buy starts a fresh echo from zero.
A sell is not only an exit. It is the event that creates a new entry window. The old echo ends — the next one begins.
Reflections you already earned stay yours and remain claimable. A reset ends the cycle's accrual; it never confiscates what the echo already gave you.
In most tokens a sell kills momentum. In ECHO it opens the next window — the next buyer becomes the first position in a brand new echo.
ECHO is a Uniswap v4 hook. A buy opens or deepens the echo, a sell clears it — the swap itself is the event. No manual rounds, no off-chain trigger, no game controller.
Every buy leaves a trace. Later buys reflect back through that trace until the echo is cleared. Swap order — who came first — is part of the game.
After a reset, buying first is meaningful again — not because of a promise, but because the mechanic itself changes after a sell.
Every action matters until the echo is reset. Then it starts again.
The first buy after reset matters. The buys that follow matter.
The sell that clears the echo matters. The next dip buyer matters.
Every buy leaves an echo. Every sell resets it.