Cassandra Observatory

From governance infrastructure to evidence infrastructure

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Cassandra is a bounded research observatory for public EU list-of-lists-derived trusted-list artifacts. It records dated collection attempts, normalizes comparable XML artifacts, emits structural diff classes, bundles the evidence trail, and exposes receipt metadata. It is not legal advice, trusted-list validation, public alerting, certification, or an official status label.
Cassandra evidence map

Collection, normalization, comparison, packaging, and public display as one replayable evidence chain.

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01

Collect

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LOTL-derived pointer attempts and saved source-byte metadata.

02

Normalize

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Comparable XML records, non-XML skips, and parser telemetry.

03

Compare

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Configured structural diff entries against Cassandra baselines.

04

Package

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EATF/AEP receipt status for package bytes and declared hashes.

Run telemetry
Aggregate Cassandra run telemetry chart
Diff-class telemetry
Aggregate Cassandra diff class telemetry chart

How Data Is Collected and Tracked

Each run is treated as one dated evidence row, following the PALLAS-style pattern of visible indicators, source packs, and explicit release boundaries.

01

Collect

Fetch the EU LOTL-derived pointer set and save returned source bytes with sidecar metadata and SHA-256 hashes.

02

Normalize

Parse comparable XML artifacts into stable local records while keeping non-XML skips and parser errors visible.

03

Compare

Diff each dated normalized set against Cassandra baselines and roll machine-readable structural classes into aggregates.

04

Package

Bundle manifests, hashes, figures, and optional EATF/AEP receipts so reviewers can replay the evidence trail.

05

Publish

Expose only aggregate dashboard data, figures, cards, and caveats through the public observatory surface.

06

Review

Keep legal interpretation, public warning language, provider-specific claims, and source-signature reliance out of scope.

Indicators

What the Indicators Mean

Current values come from the public index; definitions stay deliberately narrow and aggregate-only.

Country matrix

Latest Country Matrix

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Observation Timeline

Date Fetched Normalized Records Diffs Event EATF

EATF © latest evidence package

EATF/AEP receipts make Cassandra's package bytes, payload hashes, and receipt metadata independently checkable. They do not validate source trusted-list signatures, determine legal effect, or provide a public alerting service.