{
    "tender_id": 3260346,
    "check": {
        "ok": true,
        "versions": 5,
        "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": "2026-10-25T20:08:10Z",
            "content": "{\"cpv\": \"44114200\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\", \"buyer\": \"HOLCIM POLSKA S.A.\", \"title\": \"Usługi Przewozowe Mieszanki Betonowej Betonomieszarkami w Województwie Mazowieckim\", \"region\": \"mazowieckie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"531145\", \"deadline_at\": \"2026-11-13T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T12:00:00Z\"}",
            "content_hash": "803e9b150ad92a01bb245ecaf3088b9397f1c0dc0c50be5d7b3852e507d9495c",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "041cacfb9c599124ff5c963be138cb079a1359e05643c90c589016b815c746b7",
            "actor": null,
            "seal": {
                "id": 2,
                "digest": "6af9ff920846d2ed2fae131d9f0f0d3d71bdf63cfd98a8a18b81289d63fe5e04",
                "file": "https://tenderiq.pl/rejestr/pieczec-2.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-2.txt.ots",
                "bitcoin_block": 973147
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-25T23:35:57Z",
            "content": "{\"cpv\": \"44114200\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\", \"buyer\": \"HOLCIM POLSKA S.A.\", \"title\": \"Usługi Przewozowe Mieszanki Betonowej Betonomieszarkami w Województwie Mazowieckim\", \"region\": \"mazowieckie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"531145\", \"deadline_at\": \"2026-11-13T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T12:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\"}",
            "content_hash": "001bea3621b7ee746274dd495ac55f69325ff4aa77f29e060f3dc4dfc98e6a03",
            "prev_hash": "041cacfb9c599124ff5c963be138cb079a1359e05643c90c589016b815c746b7",
            "hash": "d9f3844341d72e2a215a0acafc1a47888b409e9ce1af10733c6cc930a0742b66",
            "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": 3,
            "recorded_at": "2026-10-26T23:36:14Z",
            "content": "{\"cpv\": \"44114200\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\", \"buyer\": \"HOLCIM POLSKA S.A.\", \"title\": \"Usługi Przewozowe Mieszanki Betonowej Betonomieszarkami w Województwie Mazowieckim\", \"region\": \"mazowieckie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"531145\", \"deadline_at\": \"2026-11-13T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T12:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3800613/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\"}",
            "content_hash": "0f16a9d5dd221eccea8bc770c573e47d1a8406f3d2f02f619ea573b8073e6bbe",
            "prev_hash": "d9f3844341d72e2a215a0acafc1a47888b409e9ce1af10733c6cc930a0742b66",
            "hash": "ee7fec73487d25aabb45e5babb7473352f20def9c29065d0e75f75eb4f756048",
            "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": 4,
            "recorded_at": "2026-10-28T22:46:00Z",
            "content": "{\"cpv\": \"44114200\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\", \"buyer\": \"HOLCIM POLSKA S.A.\", \"title\": \"Usługi Przewozowe Mieszanki Betonowej Betonomieszarkami w Województwie Mazowieckim\", \"region\": \"mazowieckie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"531145\", \"deadline_at\": \"2026-11-13T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T12:00:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\"}",
            "content_hash": "001bea3621b7ee746274dd495ac55f69325ff4aa77f29e060f3dc4dfc98e6a03",
            "prev_hash": "ee7fec73487d25aabb45e5babb7473352f20def9c29065d0e75f75eb4f756048",
            "hash": "dc2777d3b5ed189db0847dc996e0667d6c356dc252f85e97d945fa813115d153",
            "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": "2026-10-29T05:46:02Z",
            "content": "{\"cpv\": \"44114200\", \"url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/531145/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\", \"buyer\": \"HOLCIM POLSKA S.A.\", \"title\": \"Usługi Przewozowe Mieszanki Betonowej Betonomieszarkami w Województwie Mazowieckim\", \"region\": \"mazowieckie\", \"source\": \"eb2b_public\", \"status\": \"active\", \"cpv_more\": [], \"location\": \"MAZOWIECKIE\", \"source_id\": \"531145\", \"deadline_at\": \"2026-11-13T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-09-23T12:00:00Z\", \"procedure_url\": \"https://oneplace.marketplanet.pl/zapytania-ofertowe-przetargi/-/rfp/view/3800613/uslugi-przewozowe-mieszanki-betonowej-betonomieszarkami-w-wojewodztwie-mazowieckim\"}",
            "content_hash": "0f16a9d5dd221eccea8bc770c573e47d1a8406f3d2f02f619ea573b8073e6bbe",
            "prev_hash": "dc2777d3b5ed189db0847dc996e0667d6c356dc252f85e97d945fa813115d153",
            "hash": "5399d68e62de83be5b0aacc5e3a5d84a464e5376a91ddd30ebedff90603e234b",
            "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
            }
        }
    ]
}