| { |
| "policy": "Each version folder under /data is immutable: a later export on the same date is published as YYYY-MM-DD.rN and never overwrites an earlier one. latest/ is a copy of the newest version.", |
| "latest": "2026-10-30", |
| "versions": [ |
| { |
| "snapshot_version": "2026-10-07", |
| "snapshot_date": "2026-10-07", |
| "revision": 1, |
| "generated_at": "2026-10-07T08:08:48.000Z", |
| "supersedes": null, |
| "method_version": "arc-method-2026.10", |
| "stores_checked": null, |
| "rows": { |
| "stores": 89, |
| "rails_checks": 607, |
| "adoption_history": 11 |
| }, |
| "note": "First publication (Open ARC dataset, PR #62): stores, rails_checks, adoption_history.", |
| "source_commit": "3ed6750" |
| }, |
| { |
| "snapshot_version": "2026-10-07.r2", |
| "snapshot_date": "2026-10-07", |
| "revision": 2, |
| "generated_at": "2026-10-07T11:27:46.000Z", |
| "supersedes": "2026-10-07", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": null, |
| "rows": { |
| "stores": 89, |
| "rails_checks": 607, |
| "adoption_history": 11, |
| "protocol_matrix": 24 |
| }, |
| "note": "Regenerated the same day: added protocol_matrix (PR #66).", |
| "source_commit": "f3100e1" |
| }, |
| { |
| "snapshot_version": "2026-10-07.r3", |
| "snapshot_date": "2026-10-07", |
| "revision": 3, |
| "generated_at": "2026-10-07T11:41:11.000Z", |
| "supersedes": "2026-10-07.r2", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": null, |
| "rows": { |
| "stores": 89, |
| "rails_checks": 607, |
| "adoption_history": 12, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "Regenerated the same day: one stores/history definition, WebMCP not measured before the detector start, persona_a to persona_e (PR #67).", |
| "source_commit": "01aa010" |
| }, |
| { |
| "snapshot_version": "2026-10-07.r4", |
| "snapshot_date": "2026-10-07", |
| "revision": 4, |
| "generated_at": "2026-10-07T14:32:35.000Z", |
| "supersedes": "2026-10-07.r3", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": null, |
| "rows": { |
| "stores": 89, |
| "rails_checks": 647, |
| "adoption_history": 12, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "Regenerated the same day: rails_checks gained source; directory hosts grew (PR #69).", |
| "source_commit": "4375862" |
| }, |
| { |
| "snapshot_version": "2026-10-07.r5", |
| "snapshot_date": "2026-10-07", |
| "revision": 5, |
| "generated_at": "2026-10-07T19:17:59.000Z", |
| "supersedes": "2026-10-07.r4", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 1039, |
| "rows": { |
| "stores": 89, |
| "rails_checks": 1044, |
| "adoption_history": 12, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "Regenerated the same day: one host set across directory, tracker, matrix and dataset; stores_checked added (PR #72).", |
| "source_commit": "2346d7c" |
| }, |
| { |
| "snapshot_version": "2026-10-09", |
| "snapshot_date": "2026-10-09", |
| "revision": 1, |
| "generated_at": "2026-10-09T15:47:44.466Z", |
| "supersedes": "2026-10-07.r5", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3308, |
| "rows": { |
| "store_answers": 3324, |
| "stores": 89, |
| "rails_checks": 3324, |
| "adoption_history": 17, |
| "personas": 5, |
| "protocol_matrix": 24 |
| } |
| }, |
| { |
| "snapshot_version": "2026-10-09.r2", |
| "snapshot_date": "2026-10-09", |
| "revision": 2, |
| "generated_at": "2026-10-09T15:54:03.392Z", |
| "supersedes": "2026-10-09", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3308, |
| "rows": { |
| "store_answers": 3324, |
| "stores": 89, |
| "rails_checks": 3324, |
| "adoption_history": 17, |
| "personas": 5, |
| "protocol_matrix": 24 |
| } |
| }, |
| { |
| "snapshot_version": "2026-10-09.r3", |
| "snapshot_date": "2026-10-09", |
| "revision": 3, |
| "generated_at": "2026-10-09T16:03:08.069Z", |
| "supersedes": "2026-10-09.r2", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3307, |
| "rows": { |
| "store_answers": 3324, |
| "stores": 89, |
| "rails_checks": 3324, |
| "adoption_history": 17, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "stores_checked and the protocol matrix UCP and MCP denominator corrected from 3308 to the 3307 completed store_answers rows. Percentages at one decimal are unchanged. summary.json documents attempted, completed and failed." |
| }, |
| { |
| "snapshot_version": "2026-10-12", |
| "snapshot_date": "2026-10-12", |
| "revision": 1, |
| "generated_at": "2026-10-12T13:34:11.974Z", |
| "supersedes": "2026-10-09.r3", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3497, |
| "rows": { |
| "store_answers": 3538, |
| "stores": 89, |
| "rails_checks": 3538, |
| "adoption_history": 29, |
| "personas": 5, |
| "protocol_matrix": 24 |
| } |
| }, |
| { |
| "snapshot_version": "2026-10-12.r2", |
| "snapshot_date": "2026-10-12", |
| "revision": 2, |
| "generated_at": "2026-10-12T20:37:22.938Z", |
| "supersedes": "2026-10-12", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3497, |
| "rows": { |
| "store_answers": 3538, |
| "stores": 89, |
| "rails_checks": 3538, |
| "adoption_history": 32, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "UCP file sample of 220 listed United States stores: 125 of 190 clear answers publish a UCP file (as of 12 Oct 2026). 30 were unknown. Other stores are not recorded and are not counted as no." |
| }, |
| { |
| "snapshot_version": "2026-10-12.r3", |
| "snapshot_date": "2026-10-12", |
| "revision": 3, |
| "generated_at": "2026-10-13T19:30:00.000Z", |
| "supersedes": "2026-10-12.r2", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 3318, |
| "rows": { |
| "store_answers": 3335, |
| "stores": 89, |
| "rails_checks": 3335, |
| "adoption_history": 32, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "note": "CC BY 4.0 edition of 2026-10-12.r2 with the 203 OpenStreetMap-derived rows removed and quarantined unpublished discovery-source hosts excluded. Browser tests unchanged since r2, dated 2026-10-06. protocol_matrix.csv recounted from rails_checks.csv; UCP declared is Not measured because that file does not keep HTTP status." |
| }, |
| { |
| "snapshot_version": "2026-10-30", |
| "snapshot_date": "2026-10-30", |
| "revision": 1, |
| "generated_at": "2026-10-31T05:48:05.715Z", |
| "supersedes": "2026-10-12.r3", |
| "method_version": "arc-method-2026.10", |
| "stores_checked": 10610, |
| "rows": { |
| "store_answers": 10681, |
| "stores": 89, |
| "rails_checks": 10681, |
| "adoption_history": 60, |
| "personas": 5, |
| "protocol_matrix": 24 |
| }, |
| "license": "CC-BY-4.0", |
| "note": "checks dated 6\u201331 Oct 2026; no light-checker rows" |
| } |
| ] |
| } |
|
|
