Event-triggered synths
A standard synthetic tracks a continuous series, a price, an index, a rate. An event-triggered synth is minted against a discrete event instead: a question with a date and a credible resolution source. When that event resolves, the synth's collateral mix shifts along a formula that was fixed when the synth was created.
Every event-triggered synth carries an event reference recorded at mint, which event, and which oracle feed resolves it. That reference can't be changed afterwards.
| Symbol | Event | Resolution source | Status |
|---|---|---|---|
| tFOMC | FOMC target-rate decision, next meeting | Federal Reserve (H.15) | Spec |
| tOPEC | OPEC+ production quota change at next meeting | OPEC Secretariat communiqué | Spec |
| tCPIX | U.S. CPI release surprise vs. consensus | U.S. BLS & consensus print | Spec |
| tDEBT | U.S. debt ceiling raised before the Treasury X-date | U.S. Treasury | Spec |
These are specification examples, not live instruments. The rebalancing mechanic is scaffolded but not deployed. See Rebalance engine for the contract-level detail.
How a rebalance happens
- The referenced event resolves through the optimistic oracle.
- A keeper triggers the rebalance and posts a bond, the same way a liquidator does for an under-collateralised position.
- The engine reads the resolved outcome, looks up the pre-committed target mix for that outcome, and shifts the collateral basket toward it, within bounds set at creation.
- The keeper's bond is returned and a reward is paid from the synth's reward pool.
What's fixed upfront
Nothing about the rebalance is discretionary once the synth is live. Fixed at creation:
- Collateral bands: a floor and ceiling on each asset's share of the basket.
- Outcome schedule: the target mix for each possible resolution, as a step function.
- Maximum shift: the most any one asset's weight can move in a single rebalance.
A single rebalance can only move each collateral weight by a capped amount, and only toward a target committed before you took the position. Governance can't re-aim a rebalance after the fact.