# Downstream Impact Ledger

| Consumer | May consume | Must retain |
|---|---|---|
| Stack E / ROTA QE | typed handoff and return profile | stricter local AREPO, branch lineage |
| QATH | bounded chain edge and failure record | no agent self-routing or inherited admission |
| Graph_4/MACHINA | semantic annotation refs | SVG arrow/geometry never supplies transition/admission |
| agents / MED-D | candidate operand and escalation | new invocation epoch and current evidence |
| deployment | serialization profile | no runtime availability or provider inference |

No consumer is promoted or mutated by this ledger.