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Reverse-flow substrate

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@@ -12,13 +12,13 @@ last_edited: 2026-05-15
editor: pointsav-engineering
cites: []
references:
  - id: 1
    text: "Interactive Advertising Bureau Tech Lab. 'OpenRTB API Specification Version 2.6.' IAB Tech Lab, 2022."
    url: "https://iabtechlab.com/standards/openrtb/"
 - id: 1
 text: "Interactive Advertising Bureau Tech Lab. 'OpenRTB API Specification Version 2.6.' IAB Tech Lab, 2022."
 url: "https://iabtechlab.com/standards/openrtb/"
paired_with: reverse-flow-substrate.es.md
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The **Reverse-Flow Substrate** is the planned extension of the Doorman gateway, audit ledger, and per-tenant module identifier to govern outbound commercial flows. The same boundary that mediates inbound inference requests is intended to also mediate two outbound flows: a data marketplace and an ad exchange. Both are planned as opt-in per tenant, structurally disabled by default, and require per-record cryptographic provenance. This pattern encodes Doctrine claim #52.
The **Reverse-Flow Substrate** is the planned extension of the Doorman gateway, audit ledger, and per-tenant module identifier to govern outbound commercial flows. The same boundary that mediates inbound inference requests is intended to also mediate two outbound flows: a data marketplace and an ad exchange. Both are planned as opt-in per tenant, structurally disabled by default, and require per-record cryptographic provenance.

## The two planned reverse flows
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