{
    "tender_id": 3858554,
    "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": "2026-10-29T02:06:46Z",
            "content": "{\"cpv\": \"90000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/750441-2026\", \"buyer\": \"GMINA RYPIN\", \"title\": \"Polska – Usługi odbioru ścieków, usuwania odpadów, czyszczenia/sprzątania i usługi ekologiczne – Odbiór i zagospodarowanie odpadów komunalnych z terenu gminy Rypin od 01.01.2027 r. do 31.12.2027 r.\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL616, POL, PL616, POL\", \"buyer_nip\": \"8921449035\", \"source_id\": \"750441-2026\", \"deadline_at\": \"2026-12-03T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-29T01:00:00Z\"}",
            "content_hash": "fb7fb7a5651707ceab4afc6aab4b15f4e2b9e7bb4c75f1b60398a2f5d423a69b",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "269a069a3b7aceee769d346f2f9696df258ddd2628dd1c6e07eeab785ee790a2",
            "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": 2,
            "recorded_at": "2026-10-29T15:30:09Z",
            "content": "{\"cpv\": \"90000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/750441-2026\", \"buyer\": \"GMINA RYPIN\", \"title\": \"Polska – Usługi odbioru ścieków, usuwania odpadów, czyszczenia/sprzątania i usługi ekologiczne – Odbiór i zagospodarowanie odpadów komunalnych z terenu gminy Rypin od 01.01.2027 r. do 31.12.2027 r.\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL616, POL, PL616, POL\", \"buyer_nip\": \"8921449035\", \"source_id\": \"750441-2026\", \"deadline_at\": \"2026-12-03T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-29T01:00:00Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1398236\"}",
            "content_hash": "4654e72bad2489f6105cfd96ad68dbb6765edbab1bbf64f832c9030f5a9b60f9",
            "prev_hash": "269a069a3b7aceee769d346f2f9696df258ddd2628dd1c6e07eeab785ee790a2",
            "hash": "536847f24b8e1f185c21f3d5544742a93211dd3d4e4468772c2e7a1695eb2f6d",
            "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": 3,
            "recorded_at": "2026-10-29T19:31:05Z",
            "content": "{\"cpv\": \"90000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/750441-2026\", \"buyer\": \"GMINA RYPIN\", \"title\": \"Polska – Usługi odbioru ścieków, usuwania odpadów, czyszczenia/sprzątania i usługi ekologiczne – Odbiór i zagospodarowanie odpadów komunalnych z terenu gminy Rypin od 01.01.2027 r. do 31.12.2027 r.\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL616, POL, PL616, POL\", \"buyer_nip\": \"8921449035\", \"source_id\": \"750441-2026\", \"deadline_at\": \"2026-12-03T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-29T01:00:00Z\"}",
            "content_hash": "fb7fb7a5651707ceab4afc6aab4b15f4e2b9e7bb4c75f1b60398a2f5d423a69b",
            "prev_hash": "536847f24b8e1f185c21f3d5544742a93211dd3d4e4468772c2e7a1695eb2f6d",
            "hash": "efcdf7c7ee419bb0907f6ae54b4dcbb30a36a2f16612c83b14b3593f1708198f",
            "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": "2026-10-29T23:29:52Z",
            "content": "{\"cpv\": \"90000000\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/750441-2026\", \"buyer\": \"GMINA RYPIN\", \"title\": \"Polska – Usługi odbioru ścieków, usuwania odpadów, czyszczenia/sprzątania i usługi ekologiczne – Odbiór i zagospodarowanie odpadów komunalnych z terenu gminy Rypin od 01.01.2027 r. do 31.12.2027 r.\", \"region\": \"kujawsko-pomorskie\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"PL616, POL, PL616, POL\", \"buyer_nip\": \"8921449035\", \"source_id\": \"750441-2026\", \"deadline_at\": \"2026-12-03T09:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-10-29T01:00:00Z\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1398236\"}",
            "content_hash": "4654e72bad2489f6105cfd96ad68dbb6765edbab1bbf64f832c9030f5a9b60f9",
            "prev_hash": "efcdf7c7ee419bb0907f6ae54b4dcbb30a36a2f16612c83b14b3593f1708198f",
            "hash": "780d470a092ebdfce71dcc408da1068c7d7ae9c5a74ab2cd97841bae9d2d920b",
            "actor": null,
            "seal": null
        }
    ]
}