{
  "sources": [
    {
      "id": "S01",
      "title": "Art Blocks public GraphQL index, `projects_metadata` for Art Blocks x Pace project 0 (including the full program) and `tokens_metadata` for all 196 tokens. Retrieved 20 September 2026 via",
      "url": "https://artblocks-mainnet.hasura.app/v1/graphql",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Art Blocks public GraphQL index, `projects_metadata` for Art Blocks x Pace project 0 (including the full program) and `tokens_metadata` for all 196 tokens. Retrieved 20 September 2026 via https://artblocks-mainnet.hasura.app/v1/graphql. Collection page: https://www.artblocks.io/collection/petro-national-by-john-gerrard"
      ]
    },
    {
      "id": "S07",
      "title": "John Gerrard, \"Petro National\", project page.",
      "url": "https://www.johngerrard.net/petronational.html",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "John Gerrard, \"Petro National\", project page. https://www.johngerrard.net/petronational.html"
      ]
    },
    {
      "id": "S19",
      "title": "John Gerrard, \"World Flag\", project page.",
      "url": "https://www.johngerrard.net/worldflag.html",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "John Gerrard, \"World Flag\", project page. https://www.johngerrard.net/worldflag.html"
      ]
    },
    {
      "id": "S02",
      "title": "Pace Gallery, \"john gerrard: Petro National\", journal, June 2022.",
      "url": "https://www.pacegallery.com/journal/john-gerrard-petro-national/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Pace Gallery, \"john gerrard: Petro National\", journal, June 2022. https://www.pacegallery.com/journal/john-gerrard-petro-national/"
      ]
    },
    {
      "id": "S03",
      "title": "Jeff Davis, \"Art Blocks x Pace\", The Link (Art Blocks), Medium, 7 June 2022.",
      "url": "https://medium.com/the-link-art-blocks/art-blocks-x-pace-74a8400cb5d0",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Jeff Davis, \"Art Blocks x Pace\", The Link (Art Blocks), Medium, 7 June 2022. https://medium.com/the-link-art-blocks/art-blocks-x-pace-74a8400cb5d0"
      ]
    },
    {
      "id": "S18",
      "title": "Art Blocks, \"World Flag by John Gerrard\", collection page.",
      "url": "https://www.artblocks.io/collection/world-flag-by-john-gerrard",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Art Blocks, \"World Flag by John Gerrard\", collection page. https://www.artblocks.io/collection/world-flag-by-john-gerrard"
      ]
    },
    {
      "id": "S24",
      "title": "AB5D, \"Petro National by John Gerrard\", earlier essay.",
      "url": "https://ab5d.xyz/series/petro-national-by-john-gerrard/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "AB5D, \"Petro National by John Gerrard\", earlier essay. https://ab5d.xyz/series/petro-national-by-john-gerrard/"
      ]
    },
    {
      "id": "S08",
      "title": "\"john gerrard's Petro National NFT Series\", Pace Gallery, YouTube.",
      "url": "https://www.youtube.com/watch?v=_CjNoqJkGhs",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "\"john gerrard's Petro National NFT Series\", Pace Gallery, YouTube. https://www.youtube.com/watch?v=_CjNoqJkGhs. Also: \"Art NFT Linz - Keynote John Gerrard\", OÖ Stories, YouTube. https://www.youtube.com/watch?v=OniJwRq0_KI. Titles and channels as returned by YouTube's oEmbed service on 20 September 2026; the videos were identified but not watched for this draft."
      ]
    },
    {
      "id": "S05",
      "title": "Centre Pompidou, \"Petro National #16 (Nigeria)\", AM 2023-805, purchase 2023; on loan to \"La mer est ton miroir\", Abbaye Saint-Germain, Auxerre, 20 June to 1 November 2026.",
      "url": "https://www.centrepompidou.fr/en/ressources/oeuvre/MagdVCy",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Centre Pompidou, \"Petro National #16 (Nigeria)\", AM 2023-805, purchase 2023; on loan to \"La mer est ton miroir\", Abbaye Saint-Germain, Auxerre, 20 June to 1 November 2026. https://www.centrepompidou.fr/en/ressources/oeuvre/MagdVCy"
      ]
    },
    {
      "id": "S14",
      "title": "School of the Art Institute of Chicago, \"Alum John Gerrard Presents NFT Series and Solo Show at Pace Gallery\", 2022.",
      "url": "https://www.saic.edu/news/john-gerrard-presents-nft-series-and-solo-show-at-pace-gallery",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "School of the Art Institute of Chicago, \"Alum John Gerrard Presents NFT Series and Solo Show at Pace Gallery\", 2022. https://www.saic.edu/news/john-gerrard-presents-nft-series-and-solo-show-at-pace-gallery"
      ]
    },
    {
      "id": "S15",
      "title": "museum in progress, \"raising flags 01: Petro National\", digital mip.",
      "url": "https://www.mip.at/en/creations/raising-flags-01/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "museum in progress, \"raising flags 01: Petro National\", digital mip. https://www.mip.at/en/creations/raising-flags-01/"
      ]
    },
    {
      "id": "S16",
      "title": "Artsy, \"Petro National - digital mip by John Gerrard\", museum in progress, 12 August to 31 October 2023.",
      "url": "https://www.artsy.net/show/museum-in-progress-petro-national-digital-mip-by-john-gerrard",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Artsy, \"Petro National - digital mip by John Gerrard\", museum in progress, 12 August to 31 October 2023. https://www.artsy.net/show/museum-in-progress-petro-national-digital-mip-by-john-gerrard"
      ]
    },
    {
      "id": "S11",
      "title": "Artsy, \"Petro National (Nigeria), #16/196\" and \"Petro National (Austria), #79/196\", offered by museum in progress.",
      "url": "https://www.artsy.net/artwork/john-gerrard-petro-national-nigeria-number-16-slash-196",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Artsy, \"Petro National (Nigeria), #16/196\" and \"Petro National (Austria), #79/196\", offered by museum in progress. https://www.artsy.net/artwork/john-gerrard-petro-national-nigeria-number-16-slash-196 and https://www.artsy.net/artwork/john-gerrard-petro-national-austria-number-79-slash-196"
      ]
    },
    {
      "id": "S17",
      "title": "VERSE, \"John Gerrard Petro National\", HERE, 9 Cork Street, London, 25 to 26 November 2023.",
      "url": "https://verse.works/exhibitions/here2023-petro-national",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "VERSE, \"John Gerrard Petro National\", HERE, 9 Cork Street, London, 25 to 26 November 2023. https://verse.works/exhibitions/here2023-petro-national"
      ]
    },
    {
      "id": "S22",
      "title": "LACMA, \"Western Flag (NFT)\", 2021, gift of the artist, M.2023.148.",
      "url": "https://collections.lacma.org/node/2304398",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "LACMA, \"Western Flag (NFT)\", 2021, gift of the artist, M.2023.148. https://collections.lacma.org/node/2304398"
      ]
    },
    {
      "id": "S23",
      "title": "Nguyen Wahed, \"We Had Been Citizens of No Country: john gerrard and Anna Barlik\", 17 July to 27 August 2026.",
      "url": "https://nguyenwahed.com/exhibitions/46-we-had-been-citizens-of-no-country-john-gerrard-and-anna-barlik/overview",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Nguyen Wahed, \"We Had Been Citizens of No Country: john gerrard and Anna Barlik\", 17 July to 27 August 2026. https://nguyenwahed.com/exhibitions/46-we-had-been-citizens-of-no-country-john-gerrard-and-anna-barlik/overview"
      ]
    },
    {
      "id": "S04",
      "title": "Sam Gaskin, \"Pace Verso and Art Blocks Announce NFT Partnership\", Ocula, 8 June 2022.",
      "url": "https://ocula.com/magazine/art-news/pace-verso-and-art-blocks-announce-nft-partnership/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Sam Gaskin, \"Pace Verso and Art Blocks Announce NFT Partnership\", Ocula, 8 June 2022. https://ocula.com/magazine/art-news/pace-verso-and-art-blocks-announce-nft-partnership/"
      ]
    },
    {
      "id": "S12",
      "title": "Katya Kazakina, \"I've Seen a Lot of Money Grabs in My Career as an Art Market Reporter. NFT.NYC Topped Them All\", Artnet News, 24 June 2022.",
      "url": "https://news.artnet.com/news-pro/nft-column-nft-nyc-2136148",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Katya Kazakina, \"I've Seen a Lot of Money Grabs in My Career as an Art Market Reporter. NFT.NYC Topped Them All\", Artnet News, 24 June 2022. https://news.artnet.com/news-pro/nft-column-nft-nyc-2136148"
      ]
    },
    {
      "id": "S13",
      "title": "Rory, \"Petro National - The NFT Collection from Art Blocks and John Gerrard\", NFT Plazas, 11 June 2022.",
      "url": "https://nftplazas.com/petro-national-the-nft-collection-from-art-blocks-and-john-gerrard/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Rory, \"Petro National - The NFT Collection from Art Blocks and John Gerrard\", NFT Plazas, 11 June 2022. https://nftplazas.com/petro-national-the-nft-collection-from-art-blocks-and-john-gerrard/"
      ]
    },
    {
      "id": "S09",
      "title": "Charlotte Kent, essay on Petro National (headline as extracted: \"Manual Override\"), Outland.",
      "url": "https://outland.art/john-gerrard-petro-national/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Charlotte Kent, essay on Petro National (headline as extracted: \"Manual Override\"), Outland. https://outland.art/john-gerrard-petro-national/"
      ]
    },
    {
      "id": "S10",
      "title": "Richard Whiddington, \"Artist John Gerrard's New NFT Series Confronts the Climate Crisis With Stark Depictions of 'Future Deserts'\", Artnet News, 28 June 2023.",
      "url": "https://news.artnet.com/market/john-gerrard-world-flag-pace-verso-art-blocks-2328687",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Richard Whiddington, \"Artist John Gerrard's New NFT Series Confronts the Climate Crisis With Stark Depictions of 'Future Deserts'\", Artnet News, 28 June 2023. https://news.artnet.com/market/john-gerrard-world-flag-pace-verso-art-blocks-2328687"
      ]
    },
    {
      "id": "S20",
      "title": "Sander Lutz, \"John Gerrard's 'World Flag' Art Blocks Drop Points the Finger at Nationalism\", Decrypt, 28 June 2023.",
      "url": "https://decrypt.co/146544/john-gerrards-world-flag-art-blocks-drop-points-the-finger-at-nationalism",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Sander Lutz, \"John Gerrard's 'World Flag' Art Blocks Drop Points the Finger at Nationalism\", Decrypt, 28 June 2023. https://decrypt.co/146544/john-gerrards-world-flag-art-blocks-drop-points-the-finger-at-nationalism"
      ]
    },
    {
      "id": "S21",
      "title": "Adam Kleinman, \"Adam Kleinman on john gerrard's Prescient World Flag Artworks\", Pace Gallery, 23 June 2023.",
      "url": "https://www.pacegallery.com/journal/adam-kleinman-on-john-gerrards-prescient-world-flag-artworks/",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Adam Kleinman, \"Adam Kleinman on john gerrard's Prescient World Flag Artworks\", Pace Gallery, 23 June 2023. https://www.pacegallery.com/journal/adam-kleinman-on-john-gerrards-prescient-world-flag-artworks/"
      ]
    },
    {
      "id": "S06",
      "title": "Wikipedia, \"John Gerrard (artist)\".",
      "url": "https://en.wikipedia.org/wiki/John_Gerrard_(artist",
      "author": null,
      "publisher": null,
      "publicationDate": null,
      "accessedAt": "2026-09-20",
      "accessOutcome": "submitted",
      "accessMethod": "Supplied manuscript; sources not independently reinspected during import.",
      "archiveUrl": null,
      "evidenceLocators": [
        "Wikipedia, \"John Gerrard (artist)\". https://en.wikipedia.org/wiki/John_Gerrard_(artist)"
      ]
    }
  ]
}