{
    "tender_id": 3931950,
    "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": "2026-10-29T11:16:33Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\"}",
            "content_hash": "46dcae6a2758555ed3d13abd84c70bae43b8d863460f2e972e7a8ff8a7ad4ae7",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "3e750fdcbbe2a20e5a9427cf2afc4bf2f75b645b2e90fc31dc3e189ad681c7ad",
            "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": "2026-10-29T11:45:35Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\"}",
            "content_hash": "707bc8dfbb0e5bfa8e2dce15aca1e1ca42c55d820935edf5dc332ddb8b08b588",
            "prev_hash": "3e750fdcbbe2a20e5a9427cf2afc4bf2f75b645b2e90fc31dc3e189ad681c7ad",
            "hash": "c6cb73d2523f151c0b98205f91598b278ce8cdac5c696a33b58b7df39d7591e1",
            "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": "2026-10-31T04:45:30Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://e-propublico.pl/Ogloszenia/Details/6c39bd02-a04d-4706-8716-8ed7122c09d7\"}",
            "content_hash": "185dad5ca070d441169ffa259ba51ed7486bb535a3077b12d3013113162dee74",
            "prev_hash": "c6cb73d2523f151c0b98205f91598b278ce8cdac5c696a33b58b7df39d7591e1",
            "hash": "b197038ff0af12c9b4251d32d42be173571112920f33566cb5c4a33b96761f3a",
            "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": 4,
            "recorded_at": "2026-10-31T10:45:42Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\"}",
            "content_hash": "707bc8dfbb0e5bfa8e2dce15aca1e1ca42c55d820935edf5dc332ddb8b08b588",
            "prev_hash": "b197038ff0af12c9b4251d32d42be173571112920f33566cb5c4a33b96761f3a",
            "hash": "fd1250e9843047c9db14b87d0a922d1b65008f391adb77f4306090705b4f9929",
            "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": 5,
            "recorded_at": "2026-10-31T17:45:27Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://e-propublico.pl/Ogloszenia/Details/6c39bd02-a04d-4706-8716-8ed7122c09d7\"}",
            "content_hash": "185dad5ca070d441169ffa259ba51ed7486bb535a3077b12d3013113162dee74",
            "prev_hash": "fd1250e9843047c9db14b87d0a922d1b65008f391adb77f4306090705b4f9929",
            "hash": "8b771c9449a9a88c181abbc07092b35562adf6ad744e7833e4e51f5b4011fa14",
            "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": "2026-11-01T00:45:40Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\"}",
            "content_hash": "707bc8dfbb0e5bfa8e2dce15aca1e1ca42c55d820935edf5dc332ddb8b08b588",
            "prev_hash": "8b771c9449a9a88c181abbc07092b35562adf6ad744e7833e4e51f5b4011fa14",
            "hash": "e5564df2a5906d19f230a4a95bc5e40f61c3ad19415b7dbe04a994ce9180a276",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        },
        {
            "version": 7,
            "recorded_at": "2026-11-01T06:45:30Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://e-propublico.pl/Ogloszenia/Details/6c39bd02-a04d-4706-8716-8ed7122c09d7\"}",
            "content_hash": "185dad5ca070d441169ffa259ba51ed7486bb535a3077b12d3013113162dee74",
            "prev_hash": "e5564df2a5906d19f230a4a95bc5e40f61c3ad19415b7dbe04a994ce9180a276",
            "hash": "b3f4cdce31dafee151abaa493d080e2628a6bd2703a2384f759ad6b93c5d36f0",
            "actor": null,
            "seal": {
                "id": 9,
                "digest": "2dfeb1f26d6191d887699bed5d05f226d8baa25e2f81adcf1d5d9f3ce86c75c5",
                "file": "https://tenderiq.pl/rejestr/pieczec-9.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-9.txt.ots",
                "bitcoin_block": 974194
            }
        },
        {
            "version": 8,
            "recorded_at": "2026-11-02T01:45:26Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\"}",
            "content_hash": "707bc8dfbb0e5bfa8e2dce15aca1e1ca42c55d820935edf5dc332ddb8b08b588",
            "prev_hash": "b3f4cdce31dafee151abaa493d080e2628a6bd2703a2384f759ad6b93c5d36f0",
            "hash": "ce4dc7643dc08f017cb95e98fe98dfe91ad3fc921adede3f8cb0d88cc09d89a1",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 9,
            "recorded_at": "2026-11-02T07:35:32Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://e-propublico.pl/Ogloszenia/Details/6c39bd02-a04d-4706-8716-8ed7122c09d7\"}",
            "content_hash": "185dad5ca070d441169ffa259ba51ed7486bb535a3077b12d3013113162dee74",
            "prev_hash": "ce4dc7643dc08f017cb95e98fe98dfe91ad3fc921adede3f8cb0d88cc09d89a1",
            "hash": "230fac693859bff3a0ca3dbe0a534df3284aa7a0ef88ca21985d4b47da04896d",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": null
            }
        },
        {
            "version": 10,
            "recorded_at": "2026-11-02T13:46:01Z",
            "content": "{\"cpv\": \"38970000\", \"url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\", \"buyer\": \"POLITECHNIKA CZĘSTOCHOWSKA\", \"title\": \"Dostawa stanowiska badania i analizy pracy generatora dwuwirnikowego synchronicznego z magnesami trwałymi (DR-PMSG). dla Wydziału Elektrycznego Politechniki Częstochowskiej\", \"region\": \"slaskie\", \"source\": \"oneplace_marketplanet\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"3859878\", \"deadline_at\": \"2026-11-10T09:00:00Z\", \"notice_type\": \"Zapytanie ofertowe\", \"published_at\": \"2026-10-29T11:16:33Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3859878/dostawa-stanowiska-badania-i-analizy-pracy-generatora-dwuwirnikowego-synchronicznego-z-magnesami-trwalymi-dr-pmsg-dla\"}",
            "content_hash": "707bc8dfbb0e5bfa8e2dce15aca1e1ca42c55d820935edf5dc332ddb8b08b588",
            "prev_hash": "230fac693859bff3a0ca3dbe0a534df3284aa7a0ef88ca21985d4b47da04896d",
            "hash": "af8d43030558c5e2d43efe0bfff08b7dca61779575db05c73fb0f2d161b983a4",
            "actor": null,
            "seal": {
                "id": 10,
                "digest": "297505af1d9d820e84b46bcdd40ae11b1ffc912134eeb69a764090ac7f9838b4",
                "file": "https://tenderiq.pl/rejestr/pieczec-10.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-10.txt.ots",
                "bitcoin_block": null
            }
        }
    ]
}