{
  "sources": [
    {
      "id": "S01",
      "title": "Gravity 12 project record and Art Blocks index",
      "url": "https://www.artblocks.io/collection/gravity-12-by-jimmy-herdberg",
      "author": "Art Blocks / Jimmy Herdberg",
      "publisher": "Art Blocks / Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Official page and fresh indexed fields read",
      "archiveUrl": null,
      "evidenceLocators": [
        "Factory; 512; July 3 release; separate timestamps and current price in evidence."
      ]
    },
    {
      "id": "S02",
      "title": "Gravity 12 artist script",
      "url": "https://artblocks-mainnet.hasura.app/v1/graphql",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Complete 2143-character static inspection; original renderer separately viewed",
      "archiveUrl": null,
      "evidenceLocators": [
        "setup, draw, Energy, Node, r, vectr, _R; exact query and digest in evidence."
      ],
      "sha256": "946c21b145ff3c44afcb26305c04ad3cc9359af48c927b31f3069ca88a7cc9af"
    },
    {
      "id": "S03",
      "title": "The story behind Gravity 12",
      "url": "https://jmy.art/essay/the-story-behind-gravity-12",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": "2021-10-01",
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Full artist account read",
      "archiveUrl": null,
      "evidenceLocators": [
        "December 2020 iterations; Processing to p5; subset and finishing changes; July 4 and 3:22 retrospective claim."
      ]
    },
    {
      "id": "S04",
      "title": "CC BY-NC 4.0 terms",
      "url": "https://creativecommons.org/licenses/by-nc/4.0/legalcode.en",
      "author": "Creative Commons",
      "publisher": "Creative Commons",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Legal code and deed read",
      "archiveUrl": null,
      "evidenceLocators": [
        "Noncommercial sharing/adaptation and attribution conditions; not separate artist-code grant."
      ]
    },
    {
      "id": "S05",
      "title": "Gravity 12 #0",
      "url": "https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/96000000",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Canonical original renderer visually inspected; token page HTTP200",
      "archiveUrl": null,
      "evidenceLocators": [
        "Full square blue-green branching bundles; dark near-vertical central route and pale openings entering edges."
      ]
    },
    {
      "id": "S06",
      "title": "Gravity 12 #1",
      "url": "https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/96000001",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Canonical original renderer visually inspected; token page HTTP200",
      "archiveUrl": null,
      "evidenceLocators": [
        "Inset multicolour square with cream margin; sparse early strokes developed into saturated purple/red/blue/green/warm bands."
      ]
    },
    {
      "id": "S07",
      "title": "Gravity 12 #10",
      "url": "https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/96000010",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Canonical original renderer visually inspected; token page HTTP200",
      "archiveUrl": null,
      "evidenceLocators": [
        "Full multicolour field; long cream openings from edges and dense central knot; early sparse and later dense frames viewed."
      ]
    },
    {
      "id": "S08",
      "title": "Gravity 12 #20",
      "url": "https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/96000020",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Canonical original renderer visually inspected; token page HTTP200",
      "archiveUrl": null,
      "evidenceLocators": [
        "Yellow-orange full field on cream, large pale openings and luminous centre; sparse early lines became orange bands."
      ]
    },
    {
      "id": "S09",
      "title": "Gravity 12 #442, AB5D collection",
      "url": "https://www.artblocks.io/token/1/0xa7d8d9ef8d8ce8992df33d8b8cf4aebabd5bd270/96000442",
      "author": "Jimmy Herdberg / Art Blocks",
      "publisher": "Jimmy Herdberg / Art Blocks",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Fresh owner matched linked AB5D wallet; original renderer early and developed frames inspected",
      "archiveUrl": null,
      "evidenceLocators": [
        "Inset yellow-orange square, cream margin, light centre and branched orange channels; owner 0xdd19308a9731cdecb67e0d80ca6823394208c045"
      ]
    },
    {
      "id": "S10",
      "title": "p5.js 1.0.0 licence",
      "url": "https://raw.githubusercontent.com/processing/p5.js/1.0.0/license.txt",
      "author": "p5.js contributors / Free Software Foundation",
      "publisher": "p5.js contributors / Free Software Foundation",
      "publicationDate": null,
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Tagged licence text read",
      "archiveUrl": null,
      "evidenceLocators": [
        "LGPL2.1 dependency rights separate from artist code."
      ]
    },
    {
      "id": "S11",
      "title": "Hemma Hos",
      "url": "https://jmy.art/essay/hemma-hos",
      "author": "Jimmy Herdberg",
      "publisher": "Jimmy Herdberg",
      "publicationDate": "2022-05-28",
      "accessedAt": "2026-09-18",
      "accessOutcome": "inspected",
      "accessMethod": "Full exhibition account read",
      "archiveUrl": null,
      "evidenceLocators": [
        "Hall section identifies Gravity12 #487 paired with Gravity15 B\u00e4ckar."
      ]
    }
  ]
}