# Trans-Causal Monetary Protocol (TCMP)

## Purpose

TCMP governs financial interactions that:
- Influence past and future states simultaneously
- Must remain causally consistent
- Operate across timelines where cause/effect ordering is not guaranteed

This enables **causality-stable monetary operations** across:
- Temporal loops
- Retrocausal data flows
- Forward-predicted CBDC states
- Quantum timelines

## Transaction Structure

A Trans-Causal Transaction (TCX) has the structure:

```
TCX = {
  present_state: S0,
  future_projection: S+,
  past_alignment: S-,
  causal_hash: HASH(S0 + S+ + S-),
  integrity_weight: ψ
}
```

## Causal-Coherence Constraint

A TCX is legal only when:

```
causal_coherence = f(S0, S+, S-) ≥ threshold
```

If coherence fails:
- Transaction is deferred
- DBIS applies causal-resolution mapping

## API Endpoints

- `POST /api/v1/tcmp/transactions` - Create trans-causal transaction
- `GET /api/v1/tcmp/transactions/:tcxId` - Get transaction
- `POST /api/v1/tcmp/transactions/:tcxId/resolve` - Resolve deferred transaction

## Resolution Types

When coherence fails, TCMP applies resolution based on:
- `temporal_loop` - Defer until loop resolved
- `retrocausal` - Apply retrocausal correction
- `forward_predicted` - Validate prediction confidence
- `quantum_timeline` - Collapse quantum states