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Website evidence · pilot dataset

Does bsky.app fingerprint you?

Browser signals observed; fingerprinting is unconfirmed.

Browser API activity met a monitored signal threshold in the latest measured scans. The activity alone does not establish a tracking purpose.

Open evidence JSON ↗

All 6 source records are included in the JSON. Scan timestamps and versions are shown as recorded. The tabs show the latest usable homepage measurement for each setup. Later failed attempts remain in the history. Scan scope and methodology ↗

Inside the scan

← All websites

Visitor setup

Signals observed

1 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-22T14:15:35.161851Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleDiscover — Bluesky

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls

Frame: https://bsky.app/

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.6 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

navigator.deviceMemory1 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 4169 · col 943
navigator.languages2 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2048 · col 237
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2048 · col 274
navigator.userAgent9 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4779
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4818
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4882
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4927
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2350 · col 915
screen.height1 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 690
screen.width1 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 740
window.devicePixelRatio2 calls

Frame: https://bsky.app/

  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 623
  • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 705
Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 36 requests
Captured scripts
4
Instrumented frames
1
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

    Source record and integrity
    Original source
    results/headful/bsky-app-20261022T141535.json
    Original file SHA-256
    78891332ac1fcaf3267d022d9a78aeace211aa51891391c1855523d9d3ac4141

    Run ID: headful-78891332ac1f. The JSON contains sanitized observations, not the original private scan payload.

    Other scan attempts (2)

    Visitor setup

    Signals observed

    1 of 5 signal families observed

    Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Observed
    Measurement
    Measured
    Page context
    Page document
    Scan time
    2026-10-21T23:33:29.197084Z
    Browser / scanner
    156.0.8078.4 / 0.3

    Captured titleDiscover — Bluesky

    CanvasDraws text and reads canvas output.1 API entries

    Observed requires a text-drawing API and a canvas readback API. Guide ↗

    canvas.getContext1 calls

    Frame: https://bsky.app/

    • Inline caller recorded
    WebGLQueries the graphics environment.0 API entries

    Observed requires at least three distinct WebGL probing APIs. Guide ↗

    No matching API call was captured.

    AudioRenders or reads audio samples.0 API entries

    Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

    No matching API call was captured.

    FontsMeasures text repeatedly.0 API entries

    Observed requires at least ten text-measurement calls. Guide ↗

    No matching API call was captured.

    DeviceReads browser and display properties.6 API entries

    Observed requires at least three distinct browser, screen, or window properties. Guide ↗

    navigator.deviceMemory1 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 4169 · col 943
    navigator.languages2 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2048 · col 237
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2048 · col 274
    navigator.userAgent9 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4779
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4818
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4882
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 398 · col 4927
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 2350 · col 915
    screen.height1 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 690
    screen.width1 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 740
    window.devicePixelRatio2 calls

    Frame: https://bsky.app/

    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 623
    • https://web-cdn.bsky.app/static/_expo/static/js/web/index-ef5d17d20f3d338aa04034fb8f05157a.jsline 1520 · col 705
    Providers, script signatures, and DNS 0 provider labels

    Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

    No provider or DNS evidence in this record.

    Network and worker observations 58 requests
    Captured scripts
    4
    Instrumented frames
    1
    Google Ads observed
    No
    Transmission evidence
    Not validated

    Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

    Third-party hosts

      Source record and integrity
      Original source
      results/headful/bsky-app-20261021T233329.json
      Original file SHA-256
      46564780dc19204ba3073989e658f50ce5d7f9e13f37bbdebc67a88a01582b34

      Run ID: headful-46564780dc19. The JSON contains sanitized observations, not the original private scan payload.

      Visitor setup

      Scanner error

      Scanner error

      Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
      Measurement
      Scanner error
      Page context
      Page not measured
      Scan time
      2026-10-22T14:15:34.560095Z
      Browser / scanner
      156.0.8078.4 / 0.4
      Scanner error — no usable scan result

      The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.

      Source record and integrity
      Original source
      results/headful/bsky-app-20261022T141534.json
      Original file SHA-256
      b2516f2ba8b81e519fe3547d94707fe32a9fc7cfa3590c8efe475952b7f316bc

      Run ID: headful-b2516f2ba8b8. The JSON contains sanitized observations, not the original private scan payload.

      Research setup

      Signals observed

      1 of 5 signal families observed

      Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Observed
      Measurement
      Measured
      Page context
      Page document
      Scan time
      2026-10-22T21:18:46.594029Z
      Browser / scanner
      156.0.8078.4 / 0.4

      Captured titleDiscover — Bluesky

      CanvasDraws text and reads canvas output.1 API entries

      Observed requires a text-drawing API and a canvas readback API. Guide ↗

      canvas.getContext1 calls

      Frame: https://bsky.app/

      • Inline caller recorded
      WebGLQueries the graphics environment.0 API entries

      Observed requires at least three distinct WebGL probing APIs. Guide ↗

      No matching API call was captured.

      AudioRenders or reads audio samples.0 API entries

      Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

      No matching API call was captured.

      FontsMeasures text repeatedly.0 API entries

      Observed requires at least ten text-measurement calls. Guide ↗

      No matching API call was captured.

      DeviceReads browser and display properties.6 API entries

      Observed requires at least three distinct browser, screen, or window properties. Guide ↗

      navigator.deviceMemory1 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 4186 · col 943
      navigator.languages2 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 2049 · col 237
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 2049 · col 274
      navigator.userAgent9 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 398 · col 4860
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 398 · col 4899
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 398 · col 4963
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 398 · col 5008
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 2351 · col 915
      screen.height1 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 1521 · col 690
      screen.width1 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 1521 · col 740
      window.devicePixelRatio2 calls

      Frame: https://bsky.app/

      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 1521 · col 623
      • https://web-cdn.bsky.app/static/_expo/static/js/web/index-5f662c1d4e4cd4315b6fe7aa2563468c.jsline 1521 · col 705
      Providers, script signatures, and DNS 0 provider labels

      Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

      No provider or DNS evidence in this record.

      Network and worker observations 47 requests
      Captured scripts
      5
      Instrumented frames
      1
      Google Ads observed
      No
      Transmission evidence
      Not validated

      Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

      Third-party hosts

        Source record and integrity
        Original source
        results/headless/bsky-app-20261022T211846.json
        Original file SHA-256
        4576ab5ebd15af15de96b659fcb892be8992e4e8b00d224475ca958952659732

        Run ID: research-4576ab5ebd15. The JSON contains sanitized observations, not the original private scan payload.

        Other scan attempts (2)

        Research setup

        Navigation failed

        Navigation failed

        Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
        Measurement
        Navigation failed
        Page context
        Page not measured
        Scan time
        2026-10-21T22:14:54.811451Z
        Browser / scanner
        156.0.8078.4 / 0.3
        Navigation failed — no usable scan result

        Navigation or page loading failed in this browser setup. The record does not establish why it failed.

        Source record and integrity
        Original source
        results/headless/bsky-app-20261021T221454.json
        Original file SHA-256
        ea8a7f87c8f5d448b5730a65036ae211e6999573d5567e24f7912b36ee1f9b98

        Run ID: research-ea8a7f87c8f5. The JSON contains sanitized observations, not the original private scan payload.

        Research setup

        Navigation failed

        Navigation failed

        Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
        Measurement
        Navigation failed
        Page context
        Page not measured
        Scan time
        2026-10-22T17:45:42.487708Z
        Browser / scanner
        156.0.8078.4 / 0.4
        Navigation failed — no usable scan result

        Navigation or page loading failed in this browser setup. The record does not establish why it failed.

        Source record and integrity
        Original source
        results/headless/bsky-app-20261022T174542.json
        Original file SHA-256
        b748da8936950adefe5311dc5d2a9e0d625388d39e82fc3e0ac3fcf66f2f0bcc

        Run ID: research-b748da893695. The JSON contains sanitized observations, not the original private scan payload.

        Queries, request bodies, cookies, extracted values, raw errors, and session payloads are excluded before publication. The source digest identifies the original private record.

        Read the sanitized JSON →