{
    "tender_id": 3827974,
    "check": {
        "ok": true,
        "versions": 9,
        "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": "2026-10-28T21:07:36Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\"}",
            "content_hash": "4b70ce7aae80c399711553538a7f18f88b6c42405b1c929b05485c43cea7f096",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "025ae5ba9fbff8a0f1d7b70c833008b7687464c9fdf6603bc91713b929c72c78",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-28T21:45:31Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3857605/przedmiotem-zamowienia-jest-dostawa-zaworow-stalego-cisnienia\"}",
            "content_hash": "22844f53083caf9e0bf88c241cc9803b39de55ffe8365b256d9e92d6ad79ee24",
            "prev_hash": "025ae5ba9fbff8a0f1d7b70c833008b7687464c9fdf6603bc91713b929c72c78",
            "hash": "502fa222199783458a75fb10fbe7b47ed936baedd84197220c0963c096425190",
            "actor": null,
            "seal": {
                "id": 5,
                "digest": "0659ce1e2aadd7f69ed1ff4603a4290c070eaa14bbeed28a3c9a7cc2127acae9",
                "file": "https://tenderiq.pl/rejestr/pieczec-5.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-5.txt.ots",
                "bitcoin_block": 973609
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-28T22:45:43Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399285\"}",
            "content_hash": "132d7979a9ff2d73b4e657a715aaa05e7cff1eecb42b7f6beba23d51178ce8c4",
            "prev_hash": "502fa222199783458a75fb10fbe7b47ed936baedd84197220c0963c096425190",
            "hash": "fb966da39a81237f92fe9e76437b8f8f7e2987014995509c2f339ea1ac05923d",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-29T05:45:49Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3857605/przedmiotem-zamowienia-jest-dostawa-zaworow-stalego-cisnienia\"}",
            "content_hash": "22844f53083caf9e0bf88c241cc9803b39de55ffe8365b256d9e92d6ad79ee24",
            "prev_hash": "fb966da39a81237f92fe9e76437b8f8f7e2987014995509c2f339ea1ac05923d",
            "hash": "9ae1d74db7354ccce80cf70c5eb225435016cc20c5df41b435e94faf1fbcc76a",
            "actor": null,
            "seal": {
                "id": 6,
                "digest": "e733200881d78faed3c108fa90cea332062fa40f3af23fcfd3f901e311d96e33",
                "file": "https://tenderiq.pl/rejestr/pieczec-6.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-6.txt.ots",
                "bitcoin_block": 973754
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-10-31T04:45:43Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399285\"}",
            "content_hash": "132d7979a9ff2d73b4e657a715aaa05e7cff1eecb42b7f6beba23d51178ce8c4",
            "prev_hash": "9ae1d74db7354ccce80cf70c5eb225435016cc20c5df41b435e94faf1fbcc76a",
            "hash": "73d5eeb78dcd3cf0bc754c3fb5a33c5aefbcc4dd5daabf744bbb6532eeb87c56",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-10-31T10:45:56Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3857605/przedmiotem-zamowienia-jest-dostawa-zaworow-stalego-cisnienia\"}",
            "content_hash": "22844f53083caf9e0bf88c241cc9803b39de55ffe8365b256d9e92d6ad79ee24",
            "prev_hash": "73d5eeb78dcd3cf0bc754c3fb5a33c5aefbcc4dd5daabf744bbb6532eeb87c56",
            "hash": "85038eb541e1d05840e2d77121d2606370d0737856f7388fa703af75b0617bbc",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 7,
            "recorded_at": "2026-10-31T17:45:29Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399285\"}",
            "content_hash": "132d7979a9ff2d73b4e657a715aaa05e7cff1eecb42b7f6beba23d51178ce8c4",
            "prev_hash": "85038eb541e1d05840e2d77121d2606370d0737856f7388fa703af75b0617bbc",
            "hash": "133cb6d6eb38696221b82203617e0c689991b45c1020747eaec10efe029e6d9a",
            "actor": null,
            "seal": {
                "id": 8,
                "digest": "b9dfb65eef062a8f7633cee107df2b59fcca72ec5f093c9ceec0396cf65cd90d",
                "file": "https://tenderiq.pl/rejestr/pieczec-8.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-8.txt.ots",
                "bitcoin_block": 974039
            }
        },
        {
            "version": 8,
            "recorded_at": "2026-11-01T00:45:43Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3857605/przedmiotem-zamowienia-jest-dostawa-zaworow-stalego-cisnienia\"}",
            "content_hash": "22844f53083caf9e0bf88c241cc9803b39de55ffe8365b256d9e92d6ad79ee24",
            "prev_hash": "133cb6d6eb38696221b82203617e0c689991b45c1020747eaec10efe029e6d9a",
            "hash": "6a9b2e445d79de1d95d794cb0a9eab1bf39695def71d63c142f6a290191232a3",
            "actor": null,
            "seal": null
        },
        {
            "version": 9,
            "recorded_at": "2026-11-01T06:45:38Z",
            "content": "{\"cpv\": \"75251100\", \"url\": \"https://platformazakupowa.pl/transakcja/1399285\", \"buyer\": \"Krakowski Holding Komunalny S. A. w Krakowie\", \"title\": \"10494 Przedmiotem zamówienia jest dostawa zaworów stałego ciśnienia\", \"region\": \"malopolskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1399285\", \"deadline_at\": \"2026-11-02T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-28T06:26:00Z\", \"notice_number\": \"1399285\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1399285\"}",
            "content_hash": "132d7979a9ff2d73b4e657a715aaa05e7cff1eecb42b7f6beba23d51178ce8c4",
            "prev_hash": "6a9b2e445d79de1d95d794cb0a9eab1bf39695def71d63c142f6a290191232a3",
            "hash": "738defc3d1efb9c801f720ab8320e751ae4503883d109fd3007bdbee75be4c18",
            "actor": null,
            "seal": null
        }
    ]
}