{
    "tender_id": 3437755,
    "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": "2026-10-26T20:10:28Z",
            "content": "{\"cpv\": \"77211400\", \"url\": \"https://platformazakupowa.pl/transakcja/1397861\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Usługa utylizacji elektrośmieci\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397861\", \"deadline_at\": \"2026-10-30T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-25T23:00:00Z\", \"notice_number\": \"1397861\"}",
            "content_hash": "931f8f030f4db7db6b3be258d352f274365dbff4636b3366928004ecd95a2317",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "580ef48b0c5d663788c40c9ad3c2da6ae222b4e0f3f7430110b402df136e2744",
            "actor": null,
            "seal": {
                "id": 3,
                "digest": "1119fd2ade60dc88ac794742ff488b9486e8a488f9d77cc6d6a9444474dc1c77",
                "file": "https://tenderiq.pl/rejestr/pieczec-3.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-3.txt.ots",
                "bitcoin_block": 973309
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-26T23:36:17Z",
            "content": "{\"cpv\": \"77211400\", \"url\": \"https://platformazakupowa.pl/transakcja/1397861\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Usługa utylizacji elektrośmieci\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397861\", \"deadline_at\": \"2026-10-30T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-25T23:00:00Z\", \"notice_number\": \"1397861\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3853326/usluga-utylizacji-elektrosmieci\"}",
            "content_hash": "14064a6f6396b8053aafb8a79765787f26775e5db6e5b564e449806523a4a71b",
            "prev_hash": "580ef48b0c5d663788c40c9ad3c2da6ae222b4e0f3f7430110b402df136e2744",
            "hash": "7111178bc5d5b20ad105f999114928b5789f67808311f8d7ef1eadd5e8df2bcc",
            "actor": null,
            "seal": {
                "id": 4,
                "digest": "1a6d1144791ca08d9453bd1c8d38a6c251eb74cb6d377626fde25c11a52ccc7a",
                "file": "https://tenderiq.pl/rejestr/pieczec-4.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-4.txt.ots",
                "bitcoin_block": 973472
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-28T22:45:59Z",
            "content": "{\"cpv\": \"77211400\", \"url\": \"https://platformazakupowa.pl/transakcja/1397861\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Usługa utylizacji elektrośmieci\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397861\", \"deadline_at\": \"2026-10-30T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-25T23:00:00Z\", \"notice_number\": \"1397861\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1397861\"}",
            "content_hash": "b5bf6e9c06d0a11cd750bc43fdd96acb117962d908e9343e7378a4afd7425ad0",
            "prev_hash": "7111178bc5d5b20ad105f999114928b5789f67808311f8d7ef1eadd5e8df2bcc",
            "hash": "93a659412aeef1e4eb760668eb8db2429a90533946b01430fff6e7acbbf69006",
            "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": "2026-10-29T05:45:55Z",
            "content": "{\"cpv\": \"77211400\", \"url\": \"https://platformazakupowa.pl/transakcja/1397861\", \"buyer\": \"Komenda Wojewódzka Policji w Poznaniu\", \"title\": \"Usługa utylizacji elektrośmieci\", \"region\": \"zachodniopomorskie\", \"source\": \"platformazakupowa\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Polska\", \"source_id\": \"1397861\", \"deadline_at\": \"2026-10-30T07:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-25T23:00:00Z\", \"notice_number\": \"1397861\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3853326/usluga-utylizacji-elektrosmieci\"}",
            "content_hash": "14064a6f6396b8053aafb8a79765787f26775e5db6e5b564e449806523a4a71b",
            "prev_hash": "93a659412aeef1e4eb760668eb8db2429a90533946b01430fff6e7acbbf69006",
            "hash": "9180a08e0ca465a898ffae496fb7e6b86ff6bc3d40a16917d96e1dbf45c93f6f",
            "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
            }
        }
    ]
}