{
    "tender_id": 4135045,
    "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": "2026-10-30T13:01:12Z",
            "content": "{\"url\": \"https://telkol.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\", \"buyer\": \"PKP TELKOL SP. Z O.O.\", \"title\": \"REFLEKTOMETR\", \"source\": \"telkol_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536361\", \"deadline_at\": \"2026-11-02T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T08:44:00Z\"}",
            "content_hash": "3ca7acce3b3f26090a0b83226f1eb792d0eecbcce2431f1f918cdb6f7645c062",
            "prev_hash": "0000000000000000000000000000000000000000000000000000000000000000",
            "hash": "fcc08f8020020517e465d429ec3a144001c72e51abbcce1110564c351f75840f",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 2,
            "recorded_at": "2026-10-30T13:45:37Z",
            "content": "{\"url\": \"https://telkol.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\", \"buyer\": \"PKP TELKOL SP. Z O.O.\", \"title\": \"REFLEKTOMETR\", \"source\": \"telkol_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536361\", \"deadline_at\": \"2026-11-02T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T08:44:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\"}",
            "content_hash": "f154573ea42d85aa5139fe4c20014c4abbcf0ec6f6a1b405864734326197aa33",
            "prev_hash": "fcc08f8020020517e465d429ec3a144001c72e51abbcce1110564c351f75840f",
            "hash": "6a6db83f0753d044a9151ab4ced2105f0282d8cc15979e0a50c51bffaff5cb74",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 3,
            "recorded_at": "2026-10-30T22:15:46Z",
            "content": "{\"cpv\": \"72000000\", \"url\": \"https://telkol.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\", \"buyer\": \"PKP TELKOL SP. Z O.O.\", \"title\": \"REFLEKTOMETR\", \"source\": \"telkol_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536361\", \"deadline_at\": \"2026-11-02T10:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T08:44:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\"}",
            "content_hash": "11358191653e6e13588127536a56dd1cb4910672349262f09b389a860e98f55c",
            "prev_hash": "6a6db83f0753d044a9151ab4ced2105f0282d8cc15979e0a50c51bffaff5cb74",
            "hash": "856752b18754a40ec9a4d8d71e1c9b24467358c39082a1e3e061b670f622d649",
            "actor": null,
            "seal": {
                "id": 7,
                "digest": "a9f75e7ec6726860fada5c5807cac164b76cf44582f14a01cd7b4a36f579f813",
                "file": "https://tenderiq.pl/rejestr/pieczec-7.txt",
                "proof": "https://tenderiq.pl/rejestr/pieczec-7.txt.ots",
                "bitcoin_block": 973897
            }
        },
        {
            "version": 4,
            "recorded_at": "2026-11-02T15:06:19Z",
            "content": "{\"cpv\": \"72000000\", \"url\": \"https://telkol.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\", \"buyer\": \"PKP TELKOL SP. Z O.O.\", \"title\": \"REFLEKTOMETR\", \"source\": \"telkol_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536361\", \"deadline_at\": \"2026-11-03T13:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T08:44:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\"}",
            "content_hash": "a12289491cb620f89cdb717de9fee3601b74584c3840df02eb5e406a14238a4e",
            "prev_hash": "856752b18754a40ec9a4d8d71e1c9b24467358c39082a1e3e061b670f622d649",
            "hash": "7361b1d00fb67c416109077872c46b276c0170047d52d7dea0ddabef525c0e3e",
            "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": 5,
            "recorded_at": "2026-11-03T10:10:06Z",
            "content": "{\"cpv\": \"72000000\", \"url\": \"https://telkol.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\", \"buyer\": \"PKP TELKOL SP. Z O.O.\", \"title\": \"REFLEKTOMETR\", \"source\": \"telkol_eb2b\", \"status\": \"active\", \"cpv_more\": [], \"source_id\": \"536361\", \"deadline_at\": \"2026-11-03T11:00:00Z\", \"notice_type\": \"Ogloszenie o zamowieniu\", \"published_at\": \"2026-10-30T08:44:00Z\", \"procedure_url\": \"https://platforma.eb2b.com.pl/open-preview-auction.html/536361/reflektometr-5\"}",
            "content_hash": "454b4783f2fd511df739146b9c51bc1b30694c0728e82d5d3960d3df73025f03",
            "prev_hash": "7361b1d00fb67c416109077872c46b276c0170047d52d7dea0ddabef525c0e3e",
            "hash": "c35b4c8bc2c8cd4a282487bcfb4c1e6e12e0ab8fb38d3176408f85003d3f76a8",
            "actor": null,
            "seal": null
        }
    ]
}