{
    "tender_id": 4713345,
    "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": "2026-11-02T05:57:07Z",
            "content": "{\"cpv\": \"30231100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/758173-2026\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Polska – Terminale komputerowe – Dostawa drukarek mobilnych, terminali mobilnych wraz z aplikacją oraz systemem do rozliczeń konduktorskich\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"42991230\", \"30237270\", \"30237200\", \"48421000\", \"72212000\"], \"location\": \"POL, POL\", \"buyer_nip\": \"5262557278\", \"source_id\": \"758173-2026\", \"deadline_at\": \"2026-11-16T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\"}",
            "content_hash": "3fe9ac43c6de584ba682da694d2daa0e1530686e96febf1290d7e12b36c91750",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "34248c01518c7b6beb1cca7309f47129dd5f3358baea0ef807bb8d742b6316d5",
            "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": 974314
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-11-02T11:32:15Z",
            "content": "{\"cpv\": \"30231100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/758173-2026\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Polska – Terminale komputerowe – Dostawa drukarek mobilnych, terminali mobilnych wraz z aplikacją oraz systemem do rozliczeń konduktorskich\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"42991230\", \"30237270\", \"30237200\", \"48421000\", \"72212000\"], \"location\": \"POL, POL\", \"buyer_nip\": \"5262557278\", \"source_id\": \"758173-2026\", \"deadline_at\": \"2026-11-16T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\", \"procedure_url\": \"https://polregio.eb2b.com.pl/open-preview-auction.html/528663/dostawa-drukarek-mobilnych-terminali-mobilnych-wraz-z-aplikacja-oraz-systemem-do-rozliczen-konduktorskich\"}",
            "content_hash": "437019c83df562381412e1f9e32ac2a61697cab28f78fd733bcdc62a8f4f3e09",
            "prev_hash": "34248c01518c7b6beb1cca7309f47129dd5f3358baea0ef807bb8d742b6316d5",
            "hash": "3508ef9f056216f9595426863e9b67b370f7f8f24e11844e11ecb55c302145fc",
            "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": 974314
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-11-02T15:33:27Z",
            "content": "{\"cpv\": \"30231100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/758173-2026\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Polska – Terminale komputerowe – Dostawa drukarek mobilnych, terminali mobilnych wraz z aplikacją oraz systemem do rozliczeń konduktorskich\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"42991230\", \"30237270\", \"30237200\", \"48421000\", \"72212000\"], \"location\": \"POL, POL\", \"buyer_nip\": \"5262557278\", \"source_id\": \"758173-2026\", \"deadline_at\": \"2026-11-16T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\"}",
            "content_hash": "3fe9ac43c6de584ba682da694d2daa0e1530686e96febf1290d7e12b36c91750",
            "prev_hash": "3508ef9f056216f9595426863e9b67b370f7f8f24e11844e11ecb55c302145fc",
            "hash": "c8a5ff8757949628120b3e506f5d59d902293acd13dd556dc1a6e588885b53f8",
            "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": 974314
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-02T23:34:26Z",
            "content": "{\"cpv\": \"30231100\", \"url\": \"https://ted.europa.eu/pl/notice/-/detail/758173-2026\", \"buyer\": \"POLREGIO S.A.\", \"title\": \"Polska – Terminale komputerowe – Dostawa drukarek mobilnych, terminali mobilnych wraz z aplikacją oraz systemem do rozliczeń konduktorskich\", \"source\": \"ted\", \"status\": \"active\", \"cpv_more\": [\"42991230\", \"30237270\", \"30237200\", \"48421000\", \"72212000\"], \"location\": \"POL, POL\", \"buyer_nip\": \"5262557278\", \"source_id\": \"758173-2026\", \"deadline_at\": \"2026-11-16T11:00:00Z\", \"notice_type\": \"Ogłoszenie TED\", \"published_at\": \"2026-11-02T01:00:00Z\", \"procedure_url\": \"https://polregio.eb2b.com.pl/open-preview-auction.html/528663/dostawa-drukarek-mobilnych-terminali-mobilnych-wraz-z-aplikacja-oraz-systemem-do-rozliczen-konduktorskich\"}",
            "content_hash": "437019c83df562381412e1f9e32ac2a61697cab28f78fd733bcdc62a8f4f3e09",
            "prev_hash": "c8a5ff8757949628120b3e506f5d59d902293acd13dd556dc1a6e588885b53f8",
            "hash": "4dcea01753893970008110197ac91e8703e8df0f2d289bcd0bcd9a3e17661eab",
            "actor": null,
            "seal": null
        }
    ]
}