Spot sources

Where spot comes from, and what a round is.

Rounds, not ticks

A round is emitted only after price has deviated by at least d from the last emitted round. d is set per market (≈ 0.5%).

This is the opposite of a continuous quote stream: between rounds, there is silence.

Spot is read from a fixed set of price feeds at settlement. A listing specifies its feeds, deviation threshold d, and the shelf it settles into.

This is a demonstration. Cadence does not claim mainnet deployment, and no feature here settles on-chain.