{
    "tender_id": 5438309,
    "check": {
        "ok": true,
        "versions": 4,
        "broken_at": null
    },
    "formula": "content_hash = sha256(content); hash = sha256(prev_hash + \"\\n\" + tender_id + \"\\n\" + version + \"\\n\" + recorded_at + \"\\n\" + content_hash [+ \"\\n\" + actor, when the version has one])",
    "versions": [
        {
            "version": 1,
            "recorded_at": "2026-11-05T16:18:34Z",
            "content": "{\"cpv\": \"48218000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Przedłużenie licencji Microsoft Software Assurance (AAA-03790 Win Server User CALSA)\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242432\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T14:26:00Z\"}",
            "content_hash": "2ec91e7d3be2b5c5081319d2d701d68cedb3ac0990f2344131832412b135588a",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "ef30ec65abc90c0852ed47b2e95ea4965aae11199578ffa749e039e5156d800a",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-05T16:45:37Z",
            "content": "{\"cpv\": \"48218000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Przedłużenie licencji Microsoft Software Assurance (AAA-03790 Win Server User CALSA)\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242432\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T14:26:00Z\", \"procedure_url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\"}",
            "content_hash": "c534355e10161390f1b3cc5aada9f19ea39d9e26d0da27d7e515098b08ef9b45",
            "prev_hash": "ef30ec65abc90c0852ed47b2e95ea4965aae11199578ffa749e039e5156d800a",
            "hash": "5946e55fd8a8d8ae2daf57710da8b3e0e5999d17ac78a01d015af2acc376e347",
            "actor": null,
            "seal": {
                "id": 13,
                "digest": "88eaa47ed54f178cca07f94ec9f0c5d48c105c008cf249a9e53ac4ca63161903",
                "file": "https://tenderiq.pl/rejestr/pieczec-13.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-13.txt.ots",
                "bitcoin_block": 974729
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-06T07:00:39Z",
            "content": "{\"cpv\": \"48000000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Przedłużenie licencji Microsoft Software Assurance (AAA-03790 Win Server User CALSA)\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242432\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T14:26:00Z\", \"procedure_url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\"}",
            "content_hash": "f96f5ba8d63efbdde74b4e00ec0533d859421afe9d6c71f23912289421255d37",
            "prev_hash": "5946e55fd8a8d8ae2daf57710da8b3e0e5999d17ac78a01d015af2acc376e347",
            "hash": "4a5fa9376fb3ea513c61ef0c40b68de6402559ae5cd081c581ac5cd34e16cd02",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-06T14:37:28Z",
            "content": "{\"cpv\": \"48900000\", \"url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\", \"buyer\": \"Miasto Łódź\", \"title\": \"Przedłużenie licencji Microsoft Software Assurance (AAA-03790 Win Server User CALSA)\", \"region\": \"lodzkie\", \"source\": \"uml_ezamawiajacy\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"242432\", \"deadline_at\": \"2026-11-13T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-11-05T14:26:00Z\", \"procedure_url\": \"https://uml.ezamawiajacy.pl/pn/ML/demand/notice/public/242432/details\"}",
            "content_hash": "496dc06acdbb10f64491187b7448c28ab7d11678d4d51d2bfb0345f00ec89c95",
            "prev_hash": "4a5fa9376fb3ea513c61ef0c40b68de6402559ae5cd081c581ac5cd34e16cd02",
            "hash": "fb8a411e3423515986cec0bd628598ce1954f3bcec3487243679a955b3587535",
            "actor": null,
            "seal": {
                "id": 14,
                "digest": "40311773b0ad96735478ea3fd2d0f50746aa4156eaa6f667f3f02f9a13460e6d",
                "file": "https://tenderiq.pl/rejestr/pieczec-14.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-14.txt.ots",
                "bitcoin_block": 974874
            }
        }
    ]
}