Outprint

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Check the record

Every event we record stays as it was recorded: the database refuses to change or delete one. Shortly after midnight in Tbilisi each finished day is sealed with a fingerprint of all its events, linked to the day before. Download any day and check it yourself.

September 12, 2026, checked on the server just now

The day still hashes to its seal, its link holds, and it follows the day before it.

Sealed fingerprint:
46aafeb177f2698e7f351e0096f770827b45e2df05e70be021c8b2fe18c6c980
Fingerprint now:
46aafeb177f2698e7f351e0096f770827b45e2df05e70be021c8b2fe18c6c980

How the seal works

  • The day's events are written out as one CSV file: every event, counted or not, oldest first — the minute, what happened, the page, the article, how the reader arrived, country, device, whether it counted and its receipt. No reader and no address is in it.
  • Its fingerprint is the SHA-256 of that file, exactly as you download it.
  • Its link is the SHA-256 of four lines: the previous day's link, the date, the number of events and the fingerprint. The first day follows sixty-four zeros.
  • Changing any sealed day changes its fingerprint, its link and every link after it. Keep a copy of the latest link, and no earlier day can be rewritten without you seeing it.

Sealed days, newest first

  1. 6 (2 counted)

    Fingerprint
    d1ee6a467b2f5125b0c5504dcc82ab4313a98f906dc495e422cf7c9c1ac2758f
    Link
    8a40d62a05f62059c5abba1a625078a056dd409285b533913081043e3b1c62f1
  2. 3 (3 counted)

    Fingerprint
    59bc365927bb5b5c46d17a46c9788dc2be2b2370486d740d18119f093077b4ed
    Link
    1ceebfb031e3dafd5e6014f31be5ce0ecc1fc6e6dfbb4a1b2a42a91d0fae8539
  3. 7 (5 counted)

    Fingerprint
    a90bcd4303d8248bc7de9e8757de80e8a43af08e84978dbe95b2c7a54db67e76
    Link
    c1cbb684b72efca2faa887ad9c3447c4423ac624efbf93abac1f49303300166f
  4. 58 (36 counted)

    Fingerprint
    0fef067b5f06edce97cebabbfc74a9c92f2ebd65def5e5f15f9567fb656eaae5
    Link
    b9f4485e0d039c2384fdff68038b754ab0cd8fe915a1f19f40a2491692fa1deb
  5. 33 (21 counted)

    Fingerprint
    fe7950def6e16b057f5540f75e019ab01333e0cb7234f9f29033f71bcc6855ff
    Link
    518adf1c227adb38f87aaf4c4a6a61a8cba02e1354eeaa9e8df6674a3c628bb4
  6. 6 (0 counted)

    Fingerprint
    f648a66a5963a74189bc2982b5bd90217e5587b6bdef898970343d991ae15ab3
    Link
    56c57790c9f69c41d7db84f4e39e9355c0df1e8936bbc5048bdf5f535d9c57b1
  7. 2 (2 counted)

    Fingerprint
    46aafeb177f2698e7f351e0096f770827b45e2df05e70be021c8b2fe18c6c980
    Link
    50b0734952be2f76667505af111ad6bd8533f27963455eba4351b7b7ae731359
  8. 2 (2 counted)

    Fingerprint
    24c7a3f5e45f0c433e171131b53c3c79c22f5093558d75e7aa2f92629cd65926
    Link
    a4c0ed082db9c2e7686d2a6d70dc08fa3f2bab53fbe3c455542c438639e8ea95
  9. 6 (6 counted)

    Fingerprint
    5313766068aa433e48f69965b2101cafab891c038332febe942f885be61c143d
    Link
    d6a1a08467f103d4908c7785fd846d2006d6815c1b5b625c1afd5c1739dddebb
  10. 5 (5 counted)

    Fingerprint
    101a996299d0232a50212972c022e45912bfc81a21e1df98892482c494af38e3
    Link
    f7e5b0d78d8fcac1ad4ab384c34b67c9d6c6fcd2da54e8ba7592948db251272d
  11. 7 (6 counted)

    Fingerprint
    b1a5ba4583427685511af254643c255d4ff2bf657f48189165236317129eef26
    Link
    d2b0054bf060cbf01ce3383afcb9fcd5348608cfccc9e2f063458f6a330c38ff
  12. 25 (21 counted)

    Fingerprint
    2ed346a1669eb7bf8114403c8d3ab773343346d9d4c6377e12e7222fca804745
    Link
    15c46177a88aebae5fd769db6270d73859a0580c9a723198bf035ecc5814c07c
  13. 18 (7 counted)

    Fingerprint
    3b3aa845a35ce7ea0ad3ae5dff58ee61fe3f42b48702e575a58143c08e5ab1f1
    Link
    26a0983cb59e40db5bceeb621c473d7c73d1be6730570f8268ad536a6a2a97ae

Check in your browser

Downloads each day shown, hashes it on your device and recomputes the links. Nothing is sent back.

Or in a terminal

The fingerprint of one day:

curl -s "https://www.outprint.ge/api/traffic/day?day=2026-09-18" | shasum -a 256

Its link, from the previous day's link, the date, the number of events and the fingerprint:

printf '%s\n%s\n%s\n%s' 1ceebfb031e3dafd5e6014f31be5ce0ecc1fc6e6dfbb4a1b2a42a91d0fae8539 2026-09-18 6 d1ee6a467b2f5125b0c5504dcc82ab4313a98f906dc495e422cf7c9c1ac2758f | shasum -a 256

Copies elsewhere

The fingerprints are not yet published outside Outprint. Until they are, a copy of the latest link is what protects the earlier days: save one now and check it again later.

How Outprint counts