{
    "tender_id": 3909773,
    "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": "2026-10-29T07:15:19Z",
            "content": "{\"cpv\": \"33141000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa, mazowieckie\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\"}",
            "content_hash": "33a99c4242467b888f09ab341076b599c1f1854e4fd5e57df3beaab503965e66",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "86acd75d79fb4cdae83899c5d7eb988a8895205698485019f9e7144efae1b976",
            "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": null
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-29T08:25:19Z",
            "content": "{\"cpv\": \"33141110\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"33141112\"], \"location\": \"Warszawa, mazowieckie\", \"buyer_nip\": \"5270104746\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\"}",
            "content_hash": "6bfcfdfeb84a7cb88d93517b40e3dcadaf38d9b65328fd2815591b72e1d62f01",
            "prev_hash": "86acd75d79fb4cdae83899c5d7eb988a8895205698485019f9e7144efae1b976",
            "hash": "1e4bd90797511e572aa3d84957d6d54ce0e7e2c455d89b6379315ca033df8cac",
            "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": null
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-29T10:33:37Z",
            "content": "{\"cpv\": \"33141000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa, mazowieckie\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\"}",
            "content_hash": "33a99c4242467b888f09ab341076b599c1f1854e4fd5e57df3beaab503965e66",
            "prev_hash": "1e4bd90797511e572aa3d84957d6d54ce0e7e2c455d89b6379315ca033df8cac",
            "hash": "fd6e7f78d1a8b69dc9ddf943253634869f5ce77980fbcd8a2eb75d3f912aacac",
            "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": null
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-10-29T11:29:11Z",
            "content": "{\"cpv\": \"33141000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa, mazowieckie\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "23a85810b4396f88c64ff120e5635beead9df2910ae9dc456489b7098bb282fc",
            "prev_hash": "fd6e7f78d1a8b69dc9ddf943253634869f5ce77980fbcd8a2eb75d3f912aacac",
            "hash": "0c4fbd031a3101ea54c6678ad507850de633ccf3bbe556c90f426072f4dc2eb5",
            "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": null
            }
        },
        {
            "version": 5,
            "recorded_at": "2026-10-29T11:36:22Z",
            "content": "{\"cpv\": \"33141110\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"33141112\"], \"location\": \"Warszawa, mazowieckie\", \"buyer_nip\": \"5270104746\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "1816a3a6480aa908feba8f9f72dd8c54ba5848643df88ac0e7242b4c335a3bea",
            "prev_hash": "0c4fbd031a3101ea54c6678ad507850de633ccf3bbe556c90f426072f4dc2eb5",
            "hash": "e570c90de6b3374c960fb439fc99da114942c5fb6dc2b87605cb40fc59b7c1ec",
            "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": null
            }
        },
        {
            "version": 6,
            "recorded_at": "2026-10-29T14:20:25Z",
            "content": "{\"cpv\": \"33141000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa, mazowieckie\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "23a85810b4396f88c64ff120e5635beead9df2910ae9dc456489b7098bb282fc",
            "prev_hash": "e570c90de6b3374c960fb439fc99da114942c5fb6dc2b87605cb40fc59b7c1ec",
            "hash": "7bd39c3f9e7d3edb9226ef87b1092c9f500a868befc3a8742170a5de378dfed7",
            "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": null
            }
        },
        {
            "version": 7,
            "recorded_at": "2026-10-29T15:22:12Z",
            "content": "{\"cpv\": \"33141110\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"33141112\"], \"location\": \"Warszawa, mazowieckie\", \"buyer_nip\": \"5270104746\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "1816a3a6480aa908feba8f9f72dd8c54ba5848643df88ac0e7242b4c335a3bea",
            "prev_hash": "7bd39c3f9e7d3edb9226ef87b1092c9f500a868befc3a8742170a5de378dfed7",
            "hash": "49e07e1c0359156a23685ee55b4814fcb3ece4ec21d2da7a087bb8645d4bb025",
            "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": null
            }
        },
        {
            "version": 8,
            "recorded_at": "2026-10-29T16:23:40Z",
            "content": "{\"cpv\": \"33141000\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"Warszawa, mazowieckie\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "23a85810b4396f88c64ff120e5635beead9df2910ae9dc456489b7098bb282fc",
            "prev_hash": "49e07e1c0359156a23685ee55b4814fcb3ece4ec21d2da7a087bb8645d4bb025",
            "hash": "23642b13e8f45167c3f166f13d54916d469c01c8846aa03132713bdad1c58a10",
            "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": null
            }
        },
        {
            "version": 9,
            "recorded_at": "2026-10-29T17:25:34Z",
            "content": "{\"cpv\": \"33141110\", \"url\": \"https://ezamowienia.gov.pl/mo-client-board/bzp/notice-details/id/08df3586-9315-a6a5-cfcf-e60001c05d11\", \"buyer\": \"Centrum Medyczne \\\"Żelazna\\\" sp. z o. o.\", \"title\": \"Dostawa materiałów opatrunkowych do Centrum Medycznego „Żelazna” sp. z o.o.\", \"region\": \"mazowieckie\", \"source\": \"ezamowienia_notices\", \"status\": \"active\", \"cpv_more\": [\"33141112\"], \"location\": \"Warszawa, mazowieckie\", \"buyer_nip\": \"5270104746\", \"source_id\": \"2026/BZP 00507362/01\", \"deadline_at\": \"2026-11-09T09:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-29T06:33:42Z\", \"notice_number\": \"2026/BZP 00507362/01\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536044/dostawa-materialow-opatrunkowych-17\"}",
            "content_hash": "1816a3a6480aa908feba8f9f72dd8c54ba5848643df88ac0e7242b4c335a3bea",
            "prev_hash": "23642b13e8f45167c3f166f13d54916d469c01c8846aa03132713bdad1c58a10",
            "hash": "fa2b3683ba6e0078c95683ea91e112063bbb27ec3e1618d6eed70a87a1be2400",
            "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": null
            }
        }
    ]
}