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CAMBRIAN NETWORK


DYNAMIC FEE UNIV4 HOOK DEMO


PROBLEM

Token prices are volatile when there is high buy or sell pressure. During these
times, DEX LPs suffer losses when they could have otherwise sold or held the
assets.


SOLUTION

Traders should pay less fees when a token market is calm and a little more when
it is volatile. This Uniswap v4 demo uses price variance calculated over the 100
most recent blocks. The current swap fee is higher when the recent variance has
been higher and vice versa.


HISTORICAL VOLATILITY AND FEES

0.000%0.002%0.004%0.006%0.008%0.010%0.012%0.014%0.016%0.018%0.020%0.022%0.024%0.026%0.028%Swap
fee
00.050.10.150.20.250.30.35Price Variance
Block Timestamp


HOW IT WORKS

In this demo, Cambrian validators index and cryptographically verify recent
ETH-USD swap prices using Uniswap v3 data from Ethereum. They then calculate
price volatility, verified through consensus, to set current trading fees in a
Uniswap v4 hook deployed on Ethereum Sepolia. More broadly, Cambrian enables
smart contracts to perform lightning-fast, verified database queries.

Launch Dapp