{
    "tender_id": 3932857,
    "check": {
        "ok": true,
        "versions": 10,
        "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": "2026-10-29T11:36:01Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\"}",
            "content_hash": "b5a9c082b0b61c9742a70c4fc9581f469c591c0dd7aa0f29da04d3fcfa5530b4",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "2d3045f6fea98292f36fa649f88e75f8e397679e60bc38de3a04ef73b7d32944",
            "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": "2026-10-29T15:21:46Z",
            "content": "{\"cpv\": \"43261000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koziegłowy, śląskie\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\"}",
            "content_hash": "aeb76230ccdfa62af3fc43417a8390f4a8ac0fdb70b38246dbf98e91e3554927",
            "prev_hash": "2d3045f6fea98292f36fa649f88e75f8e397679e60bc38de3a04ef73b7d32944",
            "hash": "98cefa981a110374576cb2fedbcfc5fd80501404904feb98136afc0a1089adf7",
            "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": "2026-10-29T16:23:15Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\"}",
            "content_hash": "b5a9c082b0b61c9742a70c4fc9581f469c591c0dd7aa0f29da04d3fcfa5530b4",
            "prev_hash": "98cefa981a110374576cb2fedbcfc5fd80501404904feb98136afc0a1089adf7",
            "hash": "da5ef1eddf542d0aba93d5c2430ed4b58fc0012a548b9ee0b92e1aa3be45751d",
            "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": "2026-10-29T19:46:00Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "513a545dd0f5448ec6e59d7271b92130e52ca166f02c131ef7e0779925669f72",
            "prev_hash": "da5ef1eddf542d0aba93d5c2430ed4b58fc0012a548b9ee0b92e1aa3be45751d",
            "hash": "edda88f1ff5c1efa562216da3493140a51eef81c7d4e24bd3bc4e50108be842e",
            "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": "2026-10-29T21:32:59Z",
            "content": "{\"cpv\": \"43261000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koziegłowy, śląskie\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "eb58fafe73f4e11ae55e034e124c8398ea24fc9590d312ed75940a899554755b",
            "prev_hash": "edda88f1ff5c1efa562216da3493140a51eef81c7d4e24bd3bc4e50108be842e",
            "hash": "90d4c59280ba82ec0b9fb86411d47c4ddbea493e4f34c50416a74bd63fae4ca9",
            "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": 6,
            "recorded_at": "2026-10-29T23:38:26Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "513a545dd0f5448ec6e59d7271b92130e52ca166f02c131ef7e0779925669f72",
            "prev_hash": "90d4c59280ba82ec0b9fb86411d47c4ddbea493e4f34c50416a74bd63fae4ca9",
            "hash": "ecb85a86bb9f58984c5484d725056c7e8687669eda7a8baa833f0e0a96678830",
            "actor": null,
            "seal": null
        },
        {
            "version": 7,
            "recorded_at": "2026-10-30T03:41:01Z",
            "content": "{\"cpv\": \"43261000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koziegłowy, śląskie\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "eb58fafe73f4e11ae55e034e124c8398ea24fc9590d312ed75940a899554755b",
            "prev_hash": "ecb85a86bb9f58984c5484d725056c7e8687669eda7a8baa833f0e0a96678830",
            "hash": "a8cb3d4582cf42fd7b2691767c72826a2866c40302ac5911d76a2517e0bbe77b",
            "actor": null,
            "seal": null
        },
        {
            "version": 8,
            "recorded_at": "2026-10-30T05:41:59Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "513a545dd0f5448ec6e59d7271b92130e52ca166f02c131ef7e0779925669f72",
            "prev_hash": "a8cb3d4582cf42fd7b2691767c72826a2866c40302ac5911d76a2517e0bbe77b",
            "hash": "abd01b9ce4aaf7d474978fb8f97ccd6ddc1d6f5ff8695a5e735b7082f1ef5d64",
            "actor": null,
            "seal": null
        },
        {
            "version": 9,
            "recorded_at": "2026-10-30T17:24:13Z",
            "content": "{\"cpv\": \"43261000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Koziegłowy, śląskie\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "eb58fafe73f4e11ae55e034e124c8398ea24fc9590d312ed75940a899554755b",
            "prev_hash": "abd01b9ce4aaf7d474978fb8f97ccd6ddc1d6f5ff8695a5e735b7082f1ef5d64",
            "hash": "3051e2fa7333c043bdbbecbb11d81579ccfef478892163a43ab9649125ed0ced",
            "actor": null,
            "seal": null
        },
        {
            "version": 10,
            "recorded_at": "2026-10-30T18:33:11Z",
            "content": "{\"cpv\": \"43260000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df35ac-4a85-bd44-cfcf-e60001c06299\", \"buyer\": \"GMINA I MIASTO KOZIEGŁOWY\", \"title\": \"Zakup i dostawa zakup koparki kołowej\", \"region\": \"slaskie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"31158000\"], \"location\": \"Koziegłowy, śląskie\", \"buyer_nip\": \"5771952310\", \"source_id\": \"2026/BZP 00508688/01\", \"deadline_at\": \"2026-11-12T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T11:03:41Z\", \"notice_number\": \"2026/BZP 00508688/01\", \"procedure_url\": \"https://platformazakupowa.pl/transakcja/1395966\"}",
            "content_hash": "513a545dd0f5448ec6e59d7271b92130e52ca166f02c131ef7e0779925669f72",
            "prev_hash": "3051e2fa7333c043bdbbecbb11d81579ccfef478892163a43ab9649125ed0ced",
            "hash": "1d5d37a8ed221f35147f1e79786f7050f5f03e30639312a226083dfa7ba45ecf",
            "actor": null,
            "seal": null
        }
    ]
}