waiTransport · Ad insertion

Ad insertion that a buyer and a seller can both check.

waiTransport will decide and stitch ads on the server once per session class, and record every impression in a signed receipt. Spend is recomputed from the impressions, and a record that spends past its ceiling fails verification.

Roadmap Not yet operating. Each open component below is labelled with where it stands on the WAI status page.

The three labels

In the standard
The open component is in the main branch of the WAI open standard. Its link goes to its row on the dated WAI status page, and its notes are that row's.
Building
The open component is in active development, as the WAI status page lists it.
Roadmap
Planned: a WAI roadmap item, or a waiTransport service. Every waiTransport service is on the roadmap; none is operating yet.

Attested, in WAI, means signed by the party that did the work and measured it: a reader can check the signature, not re-measure the figure. It is not hardware attestation.

01 · The service

What waiTransport will decide, stitch and sign.

  • A playlist generated once per session class, with ad pods stitched at the breaks the policy allows.
  • Deterministic ad decisions within the break's duration and the funds remaining.
  • A signed receipt per impression that binds the pod, the manifest it belongs to and the creatives served.
  • Virtual linear channels as a chain of signed playback windows: a record of what aired.
  • Every party will reconcile from the same signed receipts, and every party will be able to verify them.
02 · Builds on

Open components, each with its WAI label.

  • In the standard

    Session-class manifest: an HLS media playlist generated once per session class.

    Notes The signer declares the viewer count behind any per-viewer figure.

  • In the standard

    Ad-insertion decisions with per-impression receipts.

    Notes A verifier rejects a record whose spend exceeds the grant's funds ceiling.

  • In the standard

    Packaging on group-of-pictures boundaries into content-hashed segments.

    Notes The caller supplies the slices. A verifier recomputes the deduplication totals from the signed entries.

  • In the standard

    Virtual linear channel: signed playback windows chained into a record of what aired.

03 · Roadmap

Planned, in the standard and in the service.

  • Roadmap· waiTransport

    Managed ad decisions and stitching.

  • Roadmap· WAI

    Player integration: runtime fallback and a continuity harness.

04 · Limits

What this page does not claim.

  • The ad-decision policy is test-backed, not machine-proved; the specification says so.
05 · Read next

The text behind this page.