{"sku":"terminal-change-ledger","label":"Weekly Terminal Change Ledger","amount_cents":49900,"cadence":"monthly","for_sale":true,"withdrawn":null,"summary":"A weekly delivery covering the frozen 16-site Sentinel-1 panel: every successfully observed scene with VV/VH distribution statistics, viewing geometry, comparable-pair deltas, and coverage gaps.","delivers":["CSV plus one dated, hash-sealed HTML issue","VV/VH mean and p10/p50/p90, bright and very-bright fractions, platform and orbit geometry","Comparable-pair deltas, row SHA-256 seals, and the collection batch seal","Delivered within one business day after the Wednesday collection completes","Methodology and geometry exclusions travel with every issue","Cancel before the next weekly compilation"],"checkout_armed":false,"request_url":"https://permits.ustechautomations.com/public/offers/terminal-change-ledger/request","contact_attribution":{"contract":"product-specific contact to L0 Opportunity","path_id":"terminal-change-ledger:subscription:contact","hypothesis_id":"h-terminal-change-ledger-2026-08","artifact_id":"terminal-change-ledger-v1","cutover_at":"2026-08-02T07:10:00Z","archetype":"diff-sentinel","data_type":"time-series-numeric","geo_level":"global","cta_contract_id":"permits-offer:terminal-change-ledger:primary","proof_url":"https://permits.ustechautomations.com/public/offers/terminal-change-ledger","proof_occurred_at":"2026-08-02T07:10:00Z"},"sample":{"built_at":"2026-08-20T09:44:38+00:00","coverage":{"batch_seal":"79b1798d0e792c67a00bf31cad8bd1c482642f7b244b113d07ae58c68256bddc","collected_at":"2026-08-19T11:05:09.174509+00:00","comparable_pairs_in_latest_issue":5,"fetch_errors":0,"first_seal":"2026-06-10","latest_seal":"2026-08-19","methodology":"floating-roof-v1","observations_successful":148,"observations_total":148,"pairs_withheld_as_insufficient":0,"pairs_withheld_as_not_comparable":11,"seals_held":11,"sites_in_frozen_panel":16,"universe_version":"tank_sites_v1.json:594427ede5347c4d"},"inputs":["Nothing. The panel is frozen and published; you choose only whether to receive the week"],"limits":"11 of 16 pairs in the latest issue are withheld because the two scenes do not share the viewing geometry a delta needs. Comparing across orbits produces a number that looks like a change and is not one, so the ledger prints the withholding instead. This measures radar backscatter, which is a proxy: it is not a volume, a fill level, or a business outcome, and the ledger never states one.","method":"A frozen site panel is read from Sentinel-1 scenes on a weekly cadence. A pair is comparable only when platform, orbit state, and relative orbit match; anything else is withheld by rule rather than by judgement. Every row carries its own hash. This is bounded evidence of the dated method stated here; it does not establish affiliation, endorsement, authorization, or any current outcome beyond that scope.","outputs":["CSV plus one dated, hash-sealed HTML issue","VV/VH mean and p10/p50/p90, bright and very-bright fractions per scene","Platform, orbit state, and relative orbit on every row","Comparable-pair deltas, a row seal per row, and the collection batch seal"],"sku":"terminal-change-ledger","specimen":{"country":"BE","current_scene":"2026-08-18T05:58:09.501572Z","name":"Antwerp port tank storage","orbit_state":"descending","platform":"sentinel-1d","prior_scene":"2026-08-10T17:24:20.549525Z","relative_orbit":110,"row_sha256":"a0924a7ce4b56eb815e6cb05e2e923fc6af662e5fa70aaf2d471e9f8f5ca9f31","site_id":"antwerp-be"},"what_this_is":"One real site row from the frozen panel, with the viewing geometry that makes a comparison legitimate, plus the counted state of the ledger. The paid issue is every site, weekly."},"sample_status":{"state":"AVAILABLE"}}