{
"certificate_id": "KDK-b55af26c6f76164b",
"issued_at": "2026-10-14T17:42:28.354Z",
"chain_hash": "ea138604379252c992d0e15c9dd0b9c474d51df1f72d6225332552d4badcf0d0",
"chain_payload": "{\"summary\":\"The Golden Gate Bridge officially opened to traffic in May 1937, with a dedicated pedestrian day on May 27 followed by vehicular access on May 28.\",\"overall_verdict\":\"supported\",\"confidence\":99,\"sub_claims\":[{\"claim\":\"The Golden Gate Bridge opened to traffic in 1937.\",\"verdict\":\"supported\",\"role\":\"load_bearing\",\"basis\":\"confirmed\",\"reasoning\":\"Multiple authoritative historical records and government archives confirm the bridge's opening in May 1937.\",\"key_evidence\":\"Library of Congress; History.com; Politico (FDR ceremonial opening)\"},{\"claim\":\"The bridge opened to pedestrians on May 27, 1937.\",\"verdict\":\"supported\",\"role\":\"context\",\"basis\":\"confirmed\",\"reasoning\":\"Documented as 'Pedestrian Day,' the first day of the Golden Gate Bridge Fiesta.\",\"key_evidence\":\"Library of Congress; Universal Record\"},{\"claim\":\"The bridge opened to vehicular traffic on May 28, 1937.\",\"verdict\":\"supported\",\"role\":\"context\",\"basis\":\"confirmed\",\"reasoning\":\"President Franklin D. Roosevelt ceremonially opened the bridge to vehicles via telegraph on this date.\",\"key_evidence\":\"POLITICO; History.com\"},{\"claim\":\"The roadway was completed in April 1937.\",\"verdict\":\"supported\",\"role\":\"context\",\"basis\":\"confirmed\",\"reasoning\":\"Construction records indicate the final paving and roadway completion occurred roughly one month prior to the public opening.\",\"key_evidence\":\"History.com (Golden Gate Bridge - Length, Facts & Height)\"}],\"omissions\":[{\"omission\":\"The opening was part of a week-long celebration known as the 'Golden Gate Bridge Fiesta'.\",\"supporting_evidence\":\"The Library of Congress notes the opening marked the start of a week-long festival.\",\"source\":\"Library of Congress\"}],\"citations\":[{\"source\":\"Library of Congress\",\"url\":\"https://www.loc.gov/item/today-in-history/may-27/\",\"accessed\":\"2025-05-22\"},{\"source\":\"History.com\",\"url\":\"https://www.history.com/this-day-in-history/may-27/golden-gate-bridge-opens\",\"accessed\":\"2025-05-22\"},{\"source\":\"POLITICO\",\"url\":\"https://www.politico.com/story/2014/05/fdr-opens-the-golden-gate-bridge-may-28-1937-107122\",\"accessed\":\"2025-05-22\"}],\"confidence_ratio\":{\"verdict\":99,\"evidence\":82}}",
"claim": "The Golden Gate Bridge opened to traffic in 1937.",
"summary": "The Golden Gate Bridge officially opened to traffic in May 1937, with a dedicated pedestrian day on May 27 followed by vehicular access on May 28.",
"verdict": "supported",
"confidence": 99,
"sub_claims": [
{
"claim": "The Golden Gate Bridge opened to traffic in 1937.",
"verdict": "supported",
"role": "load_bearing",
"basis": "confirmed",
"reasoning": "Multiple authoritative historical records and government archives confirm the bridge's opening in May 1937.",
"key_evidence": "Library of Congress; History.com; Politico (FDR ceremonial opening)"
},
{
"claim": "The bridge opened to pedestrians on May 27, 1937.",
"verdict": "supported",
"role": "context",
"basis": "confirmed",
"reasoning": "Documented as 'Pedestrian Day,' the first day of the Golden Gate Bridge Fiesta.",
"key_evidence": "Library of Congress; Universal Record"
},
{
"claim": "The bridge opened to vehicular traffic on May 28, 1937.",
"verdict": "supported",
"role": "context",
"basis": "confirmed",
"reasoning": "President Franklin D. Roosevelt ceremonially opened the bridge to vehicles via telegraph on this date.",
"key_evidence": "POLITICO; History.com"
},
{
"claim": "The roadway was completed in April 1937.",
"verdict": "supported",
"role": "context",
"basis": "confirmed",
"reasoning": "Construction records indicate the final paving and roadway completion occurred roughly one month prior to the public opening.",
"key_evidence": "History.com (Golden Gate Bridge - Length, Facts & Height)"
}
],
"omissions": [
{
"omission": "The opening was part of a week-long celebration known as the 'Golden Gate Bridge Fiesta'.",
"supporting_evidence": "The Library of Congress notes the opening marked the start of a week-long festival.",
"source": "Library of Congress"
}
],
"citations": [
{
"source": "Library of Congress",
"url": "https://www.loc.gov/item/today-in-history/may-27/",
"accessed": "2025-05-22"
},
{
"source": "History.com",
"url": "https://www.history.com/this-day-in-history/may-27/golden-gate-bridge-opens",
"accessed": "2025-05-22"
},
{
"source": "POLITICO",
"url": "https://www.politico.com/story/2014/05/fdr-opens-the-golden-gate-bridge-may-28-1937-107122",
"accessed": "2025-05-22"
}
],
"engine": "kodiak-v0.1",
"search_sources": [
"duckduckgo",
"wikipedia",
"wikidata",
"google_scholar",
"brave"
],
"indicia": {
"shard_index": 12,
"glyph": "957a2c68",
"shard_hash": "957a2c680e339ee1409f0af1383a3c37030d4f261caeb432809e31640bfc4f2f",
"pattern": [
[
1,
0,
0,
1,
0,
1,
0,
1
],
[
0,
1,
1,
1,
1,
0,
1,
0
],
[
0,
0,
1,
0,
1,
1,
0,
0
],
[
0,
1,
1,
0,
1,
0,
0,
0
],
[
0,
0,
0,
0,
1,
1,
1,
0
],
[
0,
0,
1,
1,
0,
0,
1,
1
],
[
1,
0,
0,
1,
1,
1,
1,
0
],
[
1,
1,
1,
0,
0,
0,
0,
1
]
],
"genesis_hash": "d666325d02e016893a6dbd9e194672ff09dd5a396f2da3ecc9074cb20a12e26b",
"pose": "pawing",
"bear": [
[
0,
0,
0,
0,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
1,
3,
1,
1,
4,
1,
0,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
1,
1,
4,
3,
1,
1,
0,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
0,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0
],
[
0,
0,
1,
1,
4,
1,
1,
3,
1,
0,
0,
0,
0,
0,
0,
0
],
[
0,
1,
4,
1,
1,
3,
4,
1,
1,
0,
0,
0,
0,
0,
0,
0
],
[
1,
3,
0,
0,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0
],
[
1,
1,
3,
0,
0,
1,
3,
1,
0,
0,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
0,
0,
1,
1,
0,
3,
1,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
0,
0,
1,
1,
0,
1,
1,
0,
0,
0,
0,
0,
0
],
[
0,
0,
0,
0,
1,
4,
0,
0,
0,
3,
1,
0,
0,
0,
0,
0
],
[
0,
0,
0,
0,
1,
1,
0,
0,
0,
1,
1,
0,
0,
0,
0,
0
]
],
"image_dark": "data:image/svg+xml;base64,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 266 211" style="user-select:none;-webkit-user-select:none;pointer-events:none;">
<text x="0" y="0" fill="none" font-size="0">​‌‍﻿11​‌‍﻿</text>
<text x="2" y="8.1" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="14.2" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="20.3" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="26.4" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="32.5" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="38.6" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="44.7" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           223A</text>
<text x="2" y="50.8" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   2h2B53A3hM35</text>
<text x="2" y="56.9" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   A@&amp;BBhGh9&amp;33</text>
<text x="2" y="63.0" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   9@9@@Hhh@@@2</text>
<text x="2" y="69.1" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                  BX&amp;@BM99@GM3A3XA55532222Ah52</text>
<text x="2" y="75.2" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   A5G#SMGSM&amp;9BMAh53GGMM33Mh55h5X</text>
<text x="2" y="81.3" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   5HM@MGGh@@@@h533h3SGHMGM3h553A5</text>
<text x="2" y="87.4" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                    h9@SG@@99BhGMShMS9SMGhHMM3GHMAA5</text>
<text x="2" y="93.5" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                 :rArB@@S@9@@GhhSS#M9SGM9SGMHSG3M23X</text>
<text x="2" y="99.6" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">            /iXrXA25HSM@@@2MMGHG#GGGHH9S#SH#9Hh3hMM2X</text>
<text x="2" y="105.7" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">        ;risA5MMhSGh53hAhhAhHHSGM#HHSBG9HSGH9hHG3Mh3s</text>
<text x="2" y="111.8" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       ;A553HHMMM3X52A;i3552hHSG#S#H#H9GGGHSGMhGM55A2</text>
<text x="2" y="117.9" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       s3Sh3HhA5sAs/     2253h3MSMGS#HG9#G#SMMh5G53h</text>
<text x="2" y="124.0" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       9s355iii          2AM5HGMHhhhHSMGS#SSG955MG9M</text>
<text x="2" y="130.1" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">        s:s                2H9@&amp;G3SS@@GGGMGB@@#5h&amp;2X.</text>
<text x="2" y="136.2" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           |&amp;@@BM3h#BB93H3hG@@@#3Xh5A</text>
<text x="2" y="142.3" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           r5SAH3hG@&amp;@955A2HS@hA s5hX:</text>
<text x="2" y="148.4" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                          ss3h2.   i3h2     ihHsi sX5X~</text>
<text x="2" y="154.5" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                          X3HX;    :53Xi    ;5HMir:s5X;</text>
<text x="2" y="160.6" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                         iAHMX:    \XG5s     ;X3Ar X2H2\</text>
<text x="2" y="166.7" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                         2A33r      A3hA     ;r2hAr/s23A</text>
<text x="2" y="172.8" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                        :33hX       ih5s.     s2H2r ;X35;</text>
<text x="2" y="178.9" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                       -sh35s       ;2G2X     i255rr ;A5i;</text>
<text x="2" y="185.0" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                       X3M5i        :sHMs      sshAA .A3si</text>
<text x="2" y="191.1" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                      -rMMAs         X5hX.      r55As i5As~</text>
<text x="2" y="197.2" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                      ~XhAr          ;33r:      :sM2, ~s32i</text>
<text x="2" y="203.3" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">    iirsii;s;;;ssr;s;:s5H53s;;;r,r;;isMhh:r:s,ir:2H5;is25A:;isX;:,:;</text>
<text x="2" y="209.4" fill="#55c7ff" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                        ;</text>
</svg>",
"image_light": "data:image/svg+xml;base64,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 266 211" style="user-select:none;-webkit-user-select:none;pointer-events:none;">
<text x="0" y="0" fill="none" font-size="0">​‌‍﻿11​‌‍﻿</text>
<text x="2" y="8.1" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="14.2" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="20.3" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="26.4" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="32.5" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="38.6" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre"></text>
<text x="2" y="44.7" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           223A</text>
<text x="2" y="50.8" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   2h2B53A3hM35</text>
<text x="2" y="56.9" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   A@&amp;BBhGh9&amp;33</text>
<text x="2" y="63.0" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   9@9@@Hhh@@@2</text>
<text x="2" y="69.1" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                  BX&amp;@BM99@GM3A3XA55532222Ah52</text>
<text x="2" y="75.2" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   A5G#SMGSM&amp;9BMAh53GGMM33Mh55h5X</text>
<text x="2" y="81.3" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                   5HM@MGGh@@@@h533h3SGHMGM3h553A5</text>
<text x="2" y="87.4" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                    h9@SG@@99BhGMShMS9SMGhHMM3GHMAA5</text>
<text x="2" y="93.5" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                 :rArB@@S@9@@GhhSS#M9SGM9SGMHSG3M23X</text>
<text x="2" y="99.6" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">            /iXrXA25HSM@@@2MMGHG#GGGHH9S#SH#9Hh3hMM2X</text>
<text x="2" y="105.7" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">        ;risA5MMhSGh53hAhhAhHHSGM#HHSBG9HSGH9hHG3Mh3s</text>
<text x="2" y="111.8" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       ;A553HHMMM3X52A;i3552hHSG#S#H#H9GGGHSGMhGM55A2</text>
<text x="2" y="117.9" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       s3Sh3HhA5sAs/     2253h3MSMGS#HG9#G#SMMh5G53h</text>
<text x="2" y="124.0" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">       9s355iii          2AM5HGMHhhhHSMGS#SSG955MG9M</text>
<text x="2" y="130.1" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">        s:s                2H9@&amp;G3SS@@GGGMGB@@#5h&amp;2X.</text>
<text x="2" y="136.2" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           |&amp;@@BM3h#BB93H3hG@@@#3Xh5A</text>
<text x="2" y="142.3" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                           r5SAH3hG@&amp;@955A2HS@hA s5hX:</text>
<text x="2" y="148.4" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                          ss3h2.   i3h2     ihHsi sX5X~</text>
<text x="2" y="154.5" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                          X3HX;    :53Xi    ;5HMir:s5X;</text>
<text x="2" y="160.6" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                         iAHMX:    \XG5s     ;X3Ar X2H2\</text>
<text x="2" y="166.7" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                         2A33r      A3hA     ;r2hAr/s23A</text>
<text x="2" y="172.8" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                        :33hX       ih5s.     s2H2r ;X35;</text>
<text x="2" y="178.9" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                       -sh35s       ;2G2X     i255rr ;A5i;</text>
<text x="2" y="185.0" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                       X3M5i        :sHMs      sshAA .A3si</text>
<text x="2" y="191.1" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                      -rMMAs         X5hX.      r55As i5As~</text>
<text x="2" y="197.2" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                      ~XhAr          ;33r:      :sM2, ~s32i</text>
<text x="2" y="203.3" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">    iirsii;s;;;ssr;s;:s5H53s;;;r,r;;isMhh:r:s,ir:2H5;is25A:;isX;:,:;</text>
<text x="2" y="209.4" fill="#7fb6d8" font-size="5.8" style="font-family:'Courier New',Courier,monospace;font-weight:700;white-space:pre">                        ;</text>
</svg>",
"svg_dark": "",
"svg_light": ""
},
"depth": "thorough",
"classification": {
"category": "history",
"claim_type": "factual",
"confidence": 95,
"domain_authorities": [
"nps.gov",
"goldengate.org",
"history.com"
],
"domain_search_terms": [
"Golden Gate Bridge opening date"
],
"color": "#c7916b",
"label": "History"
},
"logic_analysis": {
"fallacies": [],
"missing_logic": [],
"scale_factors": [],
"logic_grade": "sound"
},
"broad_logic": [],
"specific_logic": [],
"rounds": 2,
"rescrutiny": {
"changed_verdict": false,
"why": "The augmented context provided specific ceremonial details (FDR's involvement) and confirmed the distinction between pedestrian and vehicular opening dates, reinforcing the original high-confidence verdict.",
"kernel_graft_split": "The core historical fact (1937 opening) is isolated from adjacent engineering trivia; the kernel remains robust under all historical scrutiny."
},
"epistemic_landscape": {
"kernels_of_truth": [
{
"fact": "The Golden Gate Bridge opened to pedestrians on May 27, 1937",
"status": "verified",
"evidence": "Multiple historical records including Library of Congress, HISTORY, and The Universal Record",
"study_depth": "well-studied",
"under_study_reason": ""
},
{
"fact": "The Golden Gate Bridge opened to vehicular traffic on May 28, 1937",
"status": "verified",
"evidence": "POLITICO article about FDR's ceremonial opening, corroborated by other historical sources",
"study_depth": "well-studied",
"under_study_reason": ""
},
{
"fact": "The roadway was completed in April 1937",
"status": "verified",
"evidence": "HISTORY article stating completion date of April 19, 1937",
"study_depth": "well-studied",
"under_study_reason": ""
},
{
"fact": "Construction faced challenges including strong tides, storms, and underwater rock blasting",
"status": "verified",
"evidence": "HISTORY article documenting construction difficulties",
"study_depth": "partially-studied",
"under_study_reason": "While documented, detailed engineering studies of specific construction challenges may be limited. Bridge authorities have incentive to document successes more than difficulties."
}
],
"speculative_leaps": [],
"counter_narrative": {
"position": "The Golden Gate Bridge opened to traffic in 1937, with pedestrian access starting on May 27 and vehicular traffic on May 28.",
"scope_addressed": "The timeline and sequence of the bridge's opening events.",
"scope_ignored": "None, as the claim is straightforward and well-documented.",
"narrow_frame_detected": false
},
"evidence_gaps": [],
"dogmatism": {
"institutional_score": 0,
"contrarian_score": 0,
"institutional_pattern": "None, as the claim is well-supported by historical records.",
"contrarian_pattern": "None, as there is no significant opposition to the claim."
},
"incentive_map": [],
"landscape_verdict": "The claim that the Golden Gate Bridge opened to traffic in 1937 is well-supported by multiple historical records, including primary sources and reputable secondary sources. The specific dates for pedestrian and vehicular openings are also corroborated. There is no evidence of significant counter-narratives or gaps in the historical record regarding this claim."
},
"investigation_disparity": {
"extraordinariness": {
"score": 0,
"reasoning": "The claim that the Golden Gate Bridge opened to traffic in 1937 is a well-documented historical fact, supported by multiple verified sources. It aligns perfectly with existing historical records and does not depart from established knowledge."
},
"investigation_depth": {
"score": 100,
"reasoning": "The opening of the Golden Gate Bridge has been extensively investigated and documented by historians, government records, and multiple reputable sources. The exact dates (May 27 for pedestrians and May 28 for vehicular traffic) are confirmed by primary and secondary sources."
},
"disparity_gap": 0,
"gap_classification": "none",
"causal_trace": {
"inertia": {
"present": false,
"evidence": "",
"source": "",
"strength": "none"
},
"apathy": {
"present": false,
"evidence": "",
"source": "",
"strength": "none"
},
"suppression": {
"present": false,
"evidence": "",
"source": "",
"strength": "none"
}
},
"seams": [],
"testability": {
"test": "Check historical records, newspapers, and government documents from 1937.",
"cost": "Low (readily available records)",
"consequential": "None, as the claim is already well-verified."
},
"absence_check": {
"searched_for": [
"Historical records confirming the opening dates"
],
"found_in_evidence": true,
"note": "Multiple sources confirm the dates of opening."
},
"latent_evidence": [],
"component_extraordinariness": [
{
"component": "The Golden Gate Bridge opened to pedestrians on May 27, 1937",
"role": "kernel",
"structural_extraordinariness": "low",
"inverse_claim_test": "The negation would be extraordinary, as it contradicts well-documented history.",
"reasoning": "This is a straightforward historical fact with no extraordinary elements."
},
{
"component": "The Golden Gate Bridge opened to vehicular traffic on May 28, 1937",
"role": "kernel",
"structural_extraordinariness": "low",
"inverse_claim_test": "The negation would be extraordinary, as it contradicts well-documented history.",
"reasoning": "This is a straightforward historical fact with no extraordinary elements."
}
],
"disparity_verdict": "The claim that the Golden Gate Bridge opened to traffic in 1937 is well-supported by extensive historical documentation and has been thoroughly investigated. There is no gap between its significance and the depth of investigation, as it is a routine historical fact with no extraordinary elements requiring further scrutiny.",
"unsourced_dropped": 0,
"latent_unsourced": 0,
"scope": "anchored",
"pool_academic_sources": 0
},
"evidence_pool": {
"channels": [
"wikipedia",
"wikidata",
"brave",
"scholar"
],
"counts": {
"wikipedia": 0,
"wikidata": 0,
"brave": 7,
"scholar": 0
},
"total_retrieved": 7,
"off_topic_filtered": 8,
"pubmed_status": "skipped (non-biomedical claim)",
"sources_used": [
{
"source": "Golden Gate Bridge opens | HISTORY",
"text": "Strauss and his workers overcame many difficulties: strong tides, frequent storms and fogs, and the problem of blasting rock 65 feet below the water to plant earthquake-proof foundations. Eleven men died during construction. On May 27, 1937, the ...",
"url": "https://www.history.com/this-day-in-history/may-27/golden-gate-bridge-opens",
"authority": 0.95,
"channel": "brave"
},
{
"source": "Today in History - May 27 | Library of Congress",
"text": "On May 27, 1937, San Francisco‘s Golden Gate Bridge was opened to the public for the first time for “Pedestrian Day,” marking the start of the week-long “Golden Gate Bridge Fiesta” held to celebrate its completion.",
"url": "https://www.loc.gov/item/today-in-history/may-27/",
"authority": 0.9,
"channel": "brave"
},
{
"source": "FDR opens Golden Gate Bridge, May 28, 1937 - POLITICO",
"text": "On this day in 1937, President Franklin D. Roosevelt, while seated in the Oval Office, pressed a golden telegraph button to ceremonially open the Golden Gate Bridge to traffic.",
"url": "https://www.politico.com/story/2014/05/fdr-opens-the-golden-gate-bridge-may-28-1937-107122",
"authority": 0.5,
"channel": "brave"
}
],
"full_pool": [
{
"source": "Golden Gate Bridge opens | HISTORY",
"text": "Strauss and his workers overcame many difficulties: strong tides, frequent storms and fogs, and the problem of blasting rock 65 feet below the water to plant earthquake-proof foundations. Eleven men died during construction. On May 27, 1937, the ...",
"url": "https://www.history.com/this-day-in-history/may-27/golden-gate-bridge-opens",
"authority": 0.95,
"channel": "brave"
},
{
"source": "Golden Gate Bridge - Length, Facts & Height | HISTORY",
"text": "The roadway was completed on April 19, 1937, and the bridge officially opened to pedestrians on May 27 of that year.",
"url": "https://www.history.com/articles/golden-gate-bridge",
"authority": 0.95,
"channel": "brave"
},
{
"source": "Today in History - May 27 | Library of Congress",
"text": "On May 27, 1937, San Francisco‘s Golden Gate Bridge was opened to the public for the first time for “Pedestrian Day,” marking the start of the week-long “Golden Gate Bridge Fiesta” held to celebrate its completion.",
"url": "https://www.loc.gov/item/today-in-history/may-27/",
"authority": 0.9,
"channel": "brave"
},
{
"source": "1937: Golden Gate Bridge Opens | The Universal Record",
"text": "On May 27, 1937, the Golden Gate Bridge officially opened to pedestrians before vehicle traffic began the following day.",
"url": "https://universalrecord.org/2026/05/27/golden-gate-bridge-opens-1937/",
"authority": 0.7,
"channel": "brave"
},
{
"source": "FDR opens Golden Gate Bridge, May 28, 1937 - POLITICO",
"text": "On this day in 1937, President Franklin D. Roosevelt, while seated in the Oval Office, pressed a golden telegraph button to ceremonially open the Golden Gate Bridge to traffic.",
"url": "https://www.politico.com/story/2014/05/fdr-opens-the-golden-gate-bridge-may-28-1937-107122",
"authority": 0.5,
"channel": "brave"
},
{
"source": "Golden Gate Bridge | History | Research Starters | EBSCOhost",
"text": "In May, 1937, the bridge was opened, ahead of schedule and under budget. When his work was finished, Strauss penned an ode titled “The Mighty Task Is Done.” It was to be his last mighty task, as he died the following year.",
"url": "https://www.ebsco.com/research-starters/history/golden-gate-bridge/",
"authority": 0.5,
"channel": "brave"
},
{
"source": "Golden Gate Bridge Opens | History | Research Starters | EBSCOhost",
"text": "The Golden Gate Bridge, an iconic symbol of San Francisco, officially opened on May 27, 1937, after years of planning and construction. This monumental structure was conceived to address the pressing need for improved transportation across the ...",
"url": "https://www.ebsco.com/research-starters/history/golden-gate-bridge-opens",
"authority": 0.5,
"channel": "brave"
}
],
"semantic_filtered": 7,
"independent_origins": 5,
"origin_clusters": [
{
"origin": "host:history.com",
"count": 2
},
{
"origin": "host:ebsco.com",
"count": 2
}
]
},
"source_quality": {
"total": 7,
"academic": 0,
"government": 1,
"legal": 0,
"encyclopedia": 0,
"news": 0,
"other": 6,
"primary": 1,
"grade": "mixed"
},
"used_source_quality": {
"total": 3,
"academic": 0,
"government": 1,
"legal": 0,
"encyclopedia": 0,
"news": 0,
"other": 2,
"primary": 1,
"grade": "mixed"
},
"provenance": {
"verified_count": 3,
"orphaned_count": 0,
"orphaned_citations": [],
"integrity": "clean",
"fidelity": {
"auditor": "openai/gpt-5.4",
"overstated": false,
"per_source": [
{
"i": 0,
"relation": "partial",
"note": "Date shown, opening details truncated"
},
{
"i": 1,
"relation": "partial",
"note": "Opened to public in 1937, pedestrians only"
},
{
"i": 2,
"relation": "supports",
"note": "Ceremonially opened bridge to traffic in 1937"
}
],
"source_count": 3,
"note": "Source 2 directly supports; others are limited but consistent."
}
},
"integrity_caps": [],
"integrity_cap": null,
"polling": {
"base_confidence": 99,
"adjusted_confidence": 99,
"consensus_dampening_pts": 0,
"volatility_dampening_pts": 0,
"volatility_band_pts": 5,
"poll_size": 14,
"consensus": {
"authority_supported_pct": 100,
"general_sources_supported_pct": 100,
"strength": 1,
"authority_vs_sources_gap_pct": 0,
"echo_discount": 0.4,
"dampening_pts": 0,
"sample": 8
},
"volatility": {
"heat": 0.38,
"pressure": "low",
"emotional_charge": 0.2,
"news_churn": 0.64,
"band_pts": 5,
"dampening_pts": 0,
"sample": 14
},
"note": "Information environment shows strong consensus (authority 100% / general sources 100% supported); remaining uncertainty is internal to the analysis, not the evidence base."
},
"confidence_ratio": {
"verdict": 99,
"evidence": 82,
"legend": "verdict confidence / how complete the evidence is",
"verdict_inputs": {
"stated": 99,
"verdict_class_adjustment": 0,
"load_bearing_coherence": 1,
"corrected": false
},
"evidence_inputs": {
"sources": 7,
"independent_origins": 5,
"classes_present": 2,
"class_counts": {
"primary_record": 1,
"scholarly": 0,
"reportage": 0,
"open_web": 6
},
"primary_found": true,
"quasi_primary_found": false,
"load_bearing": 1,
"load_bearing_without_evidence": 0,
"load_bearing_displaced": 0
},
"evidence_parts": {
"origins": 32,
"classes": 10,
"primary": 20,
"contact": 20
},
"weights": {
"origins": "40 × min(1, (independent origins − 1) / 5)",
"classes": "20 × classes present / 4 (primary record, scholarly, reportage, reference/open web)",
"primary": "20 if an academic/government/legal source was retrieved; 10 if only reference-class; else 0",
"contact": "20 × mean over load-bearing sub-claims (evidence spoke to it 1; displaced 0.5; mixed 0.75; unverifiable for lack of evidence 0)"
},
"rule": "the denominator never feeds the numerator"
},
"buoy_tick": 19518,
"buoy_chain_hash": "4ca3441aa04cdf0fe69797753788f4e5a8bf1795fb27598c7497cf3d960f1c4a",
"checks_remaining": 927,
"tier": "pro"
}