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Website evidence · pilot dataset

Does mlb.com 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 8 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 · Partial load
Page context
Page document
Scan time
2026-10-22T20:37:33.751442Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleMLB.com | The Official Site of Major League Baseball

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://www.mlb.com/

  • 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.0 API entries

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

No matching API call was captured.

Providers, script signatures, and DNS 1 provider labels

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

  • Google Tag Managerwww.googletagmanager.com
Network and worker observations 143 requests
Captured scripts
0
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

  • assets.adobedtm.com
  • brand-colors.mlbstatic.com
  • builds.mlbstatic.com
  • images.ctfassets.net
  • img.mlbstatic.com
  • midfield.mlbstatic.com
  • www.googletagmanager.com
  • www.mlbstatic.com
Other recorded API calls 1
  • document.cookie.read2 calls
Source record and integrity
Original source
results/headful/mlb-com-20261022T203733.json
Original file SHA-256
59a69433a19f934a1908b265720163d5ea85061a08266f42e885e641eb2de9af

Run ID: headful-59a69433a19f. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (4)

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-21T23:28:16.244985Z
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/mlb-com-20261021T232816.json
Original file SHA-256
dd5b64c58adcb4f1940d407dae007b33ccfab0dccb6d40853a21027fe29611c3

Run ID: headful-dd5b64c58adc. 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
2026-10-22T15:09:31.471020Z
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/mlb-com-20261022T150931.json
Original file SHA-256
8871bbc81aad24830aed3017a84f0f4ee5709ded1ced59d4a56034be6dd4ddce

Run ID: headful-8871bbc81aad. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T15:09:32.123793Z
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/headful/mlb-com-20261022T150932.json
Original file SHA-256
f0c7033f1f92fe20086a492d9bb3e96721468e6747c019b23bcddb2f9289c729

Run ID: headful-f0c7033f1f92. 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
2026-10-22T20:37:32.837561Z
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/mlb-com-20261022T203732.json
Original file SHA-256
1a5be8955fbf551f1c32952dc03889f5a9bd2a5520d16279d1ab2e620333a8fd

Run ID: headful-1a5be8955fbf. 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 · Partial load
Page context
Page document
Scan time
2026-10-22T22:48:27.386274Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleMLB.com | The Official Site of Major League Baseball

CanvasDraws text and reads canvas output.2 API entries

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

canvas.getContext1 calls
  • Inline caller recorded
canvas.getContext2 calls

Frame: https://www.mlb.com/

  • Inline caller recorded
  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 48862
WebGLQueries the graphics environment.2 API entries

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

webglrenderingcontext.getExtension1 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 48946
webglrenderingcontext.getParameter1 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 49016
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.7 API entries

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

navigator.maxTouchPoints2 calls

Frame: https://www.mlb.com/

  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/03f11f61-57634bd104d7488e.jsline 27 · col 26546
  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 1621156
navigator.platform23 calls

Frame: https://www.mlb.com/

  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 631265
  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 631283
  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 631319
  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 632887
  • https://builds.mlbstatic.com/mlb.com/web-apps/x-homepage/_next/static/chunks/7905-3f0aa2546be88f97.jsline 1 · col 632913
navigator.userAgent167 calls

Frame: https://www.mlb.com/

  • https://assets.adobedtm.com/[redacted-id]/[redacted-id]/launch-0febec0c5fac.min.jsline 8 · col 10184
  • https://assets.adobedtm.com/[redacted-id]/[redacted-id]/launch-0febec0c5fac.min.jsline 11 · col 5749
  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 54633
  • https://www.mlbstatic.com/mlb.com/vendor/mlb-okta/mlb-okta.jsline 2 · col 39466
  • https://www.mlbstatic.com/mlb.com/vendor/mlb-okta/mlb-okta.jsline 2 · col 91818
screen.colorDepth1 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 54786
screen.height2 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 49279
  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 54749
screen.width2 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 49269
  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 54734
window.devicePixelRatio1 calls

Frame: https://www.mlb.com/

  • https://www.mlbstatic.com/mlb.com/adobe-analytics/target/2.3.0/at.jsline 6 · col 49100
Providers, script signatures, and DNS 4 provider labels

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

  • Chartbeat (analytics)static.chartbeat.com
  • Google Adsad.doubleclick.net, googleads.g.doubleclick.net, stats.g.doubleclick.net
  • Google Analyticswww.google-analytics.com
  • Google Tag Managerwww.googletagmanager.com

Static script signatures

  • https://www.googletagmanager.com/gtm.jsreCAPTCHA · 0 API patterns
Network and worker observations 262 requests
Captured scripts
37
Instrumented frames
2
Google Ads observed
Yes
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

  • aa.agkn.com
  • ad.doubleclick.net
  • analytics.google.com
  • analytics.tiktok.com
  • assets.adobedtm.com
  • bat.bing.com
  • bdfed.stitch.mlbinfra.com
  • brand-colors.mlbstatic.com
  • builds.mlbstatic.com
  • cdn.branch.io
  • cdn.cookielaw.org
  • cdn.mgln.ai
  • cm.everesttech.net
  • connect.facebook.net
  • dpm.demdex.net
  • googleads.g.doubleclick.net
  • images.ctfassets.net
  • img.mlbstatic.com
  • midfield.mlbstatic.com
  • mlb.demdex.net
  • mlbadvancedmedialp.tt.omtrdc.net
  • p.veritone-ce.com
  • platform.twitter.com
  • sc-static.net
  • secure.quantserve.com
  • static.ads-twitter.com
  • static.chartbeat.com
  • stats.g.doubleclick.net
  • us.connextra.com
  • www.datadoghq-browser-agent.com
  • www.google-analytics.com
  • www.google.com
  • www.googletagmanager.com
  • www.mlbstatic.com
Other recorded API calls 4
  • document.cookie.read1 calls
  • document.cookie.read106 calls
  • document.cookie.write1 calls
  • document.cookie.write21 calls
Source record and integrity
Original source
results/headless/mlb-com-20261022T224827.json
Original file SHA-256
e6a50d7b00b65f6eb5afa7f1083f531027bafafd0054d599f592e6c8cfb37f84

Run ID: research-e6a50d7b00b6. 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
2026-10-21T21:35:10.072748Z
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/mlb-com-20261021T213510.json
Original file SHA-256
467e2a311009218cbc2908824699021c76d57d2e1fd07fe7eb9a8b3aa5a24d8f

Run ID: research-467e2a311009. 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
2026-10-22T18:30:28.735152Z
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/mlb-com-20261022T183028.json
Original file SHA-256
e82fbb779eda1d7be26f5a1b4c030f958c8796f774d87fe2c196bd8091a943d1

Run ID: research-e82fbb779eda. 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 →