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Website evidence · pilot dataset

Does rumble.com fingerprint you?

Fingerprinting indicators observed.

The latest measured scans include canvas drawing and readback by the same script. Some activity was recorded on a challenge page. This is a fingerprinting indicator, not proof of tracking intent or transmission.

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

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
2026-10-22T16:28:26.170030Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titlerumble.com

CanvasDraws text and reads canvas output.1 API entries

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

canvas.getContext1 calls
  • 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.2 API entries

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

navigator.userAgent2 calls
  • Inline caller recorded
window.devicePixelRatio1 calls
  • Inline caller recorded
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.

Static script signatures

  • https://challenges.cloudflare.com/[redacted-challenge]reCAPTCHA · 0 API patterns
Network and worker observations 9 requests
Captured scripts
2
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

  • challenges.cloudflare.com
Source record and integrity
Original source
results/headful/rumble-com-20261022T162826.json
Original file SHA-256
d5b95d5409d85d91a1aa4b8d8f8e4f7698b0f1ee8df3848a900c0118ffa0fd33

Run ID: headful-d5b95d5409d8. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (2)

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-21T22:33:39.211878Z
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/headful/rumble-com-20261021T223339.json
Original file SHA-256
739b0a41f7d848d9d46c1a52950693e28fef4435d5509e65ef5e7ac77c4af577

Run ID: headful-739b0a41f7d8. 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
2026-10-22T16:28:24.168322Z
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/rumble-com-20261022T162824.json
Original file SHA-256
832e836eba1cd2891319108c845fe4749a551fa860847b3f617b127468feb2a4

Run ID: headful-832e836eba1c. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Draw + readback

4 of 5 signal families observed

Canvas: ObservedWebGL: ObservedAudio: ObservedFonts: Not observedDevice: Observed
Measurement
Measured
Page context
Challenge page
Scan time
2026-10-22T23:18:51.536615Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleJust a moment...

CanvasDraws text and reads canvas output.6 API entries

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

canvas.getContext3 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • Inline caller recorded
  • https://challenges.cloudflare.com/[redacted-challenge]
canvas.getContext1 calls

Frame: https://rumble.com/

  • Inline caller recorded
canvas.toDataURL1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
canvas2d.fillText2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
canvas2d.getImageData2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
canvas2d.strokeText1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
WebGLQueries the graphics environment.10 API entries

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

webgl2renderingcontext.getExtension5 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webgl2renderingcontext.getParameter38 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webgl2renderingcontext.getShaderPrecisionFormat1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webgl2renderingcontext.getSupportedExtensions2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webgl2renderingcontext.readPixels1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webglrenderingcontext.getExtension5 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webglrenderingcontext.getParameter36 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webglrenderingcontext.getShaderPrecisionFormat14 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webglrenderingcontext.getSupportedExtensions2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
webglrenderingcontext.readPixels3 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
AudioRenders or reads audio samples.4 API entries

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

audio.createDynamicsCompressor2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
audio.createOscillator2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
audiobuffer.getChannelData4 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
offlineaudio.startRendering3 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
FontsMeasures text repeatedly.1 API entries

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

fonts.check1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
DeviceReads browser and display properties.13 API entries

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

navigator.deviceMemory1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.doNotTrack1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.getBattery1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.hardwareConcurrency1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.language3 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.languages2 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.maxTouchPoints1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.mimeTypes1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.platform1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.plugins3 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.userAgent1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
navigator.webdriver1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
window.devicePixelRatio1 calls

Frame: https://challenges.cloudflare.com/[redacted-challenge]

  • https://challenges.cloudflare.com/[redacted-challenge]
Scripts with both text drawing and canvas readback 1

These source URLs appear in both call groups. Aggregated logs do not preserve the full execution sequence or establish the purpose of the collection.

  • https://challenges.cloudflare.com/[redacted-challenge]
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.

Static script signatures

  • https://challenges.cloudflare.com/[redacted-challenge]reCAPTCHA · 0 API patterns
Network and worker observations 18 requests
Captured scripts
4
Instrumented frames
2
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

  • challenges.cloudflare.com
  • hagen.challenges.cloudflare.com
Other recorded API calls 4
  • document.cookie.read2 calls
  • document.cookie.read1 calls
  • webrtc.RTCPeerConnection1 calls
  • webrtc.RTCPeerConnection1 calls
Source record and integrity
Original source
results/headless/rumble-com-20261022T231851.json
Original file SHA-256
e36cc47640c5270dfaefefe511a8d49ec91d77513802c4eaec4c491fc8429ef4

Run ID: research-e36cc47640c5. 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
2026-10-21T20:55:29.535099Z
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/rumble-com-20261021T205529.json
Original file SHA-256
957575d1110a7d710a7a044b58369467c855d8738093fba0a8c1109c25fe267e

Run ID: research-957575d1110a. 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
2026-10-22T18:54:41.436925Z
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/rumble-com-20261022T185441.json
Original file SHA-256
bd1c98aadb89156402f07fc2f974f2ccc6eef5d268c6423675a4444db8023f20

Run ID: research-bd1c98aadb89. 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 →