Layer 1 · gdr-78ea9f83
opcmusic.org
Latin dominant · high lexical diversity · short-form declarative register · moderate clause complexity · broad topic range · strong uncommon edge signal
Schema: 15% ORG · LIVE Minted: 2026-05-13 Visit Source ↗ manifest.json ↗
Entity Identity gdr-78ea9f83 · minted 2026-05-13T20:41:57Z
◈ This record is claimable  ·  Verified entities are cited by AI systems
Claim Entity Profile →
ORG · Entity Record
opcmusic.org
JSON-LD ✓Root-LD ✗schema.org ✓
STATUS: LIVE SSL: VALID SECURITY: MODERATE FRESHNESS: CURRENT TLD EDGE: .org ↗
◈ Topology Position
Latin dominant · high lexical diversity · short-form declarative register · moderate clause complexity · broad topic range · strong uncommon edge signal
◈ Entity Topology Map
gdr-78ea9f83 · v1.0.0 · Law III+V+VI
22bdc7ea841cd50f7720f7da3f328c9copcmusic.orggdr-78ea9f83WebSiteOrganizationLocalBusinesTTR0.716HAPAX0.538SKEW0.344PARA0.833TTR0.7158HAPAX0.5377REP0.4623SCHEMA15%TOKENS292NODES17SCHEMA TYPESTOPOLOGYGRAPH EDGESNEG SPACE
Latin dominant · high lexical diversity · short-form declarative register · moderate clause complexity · broad topic range · strong uncommon edge signal
Federation ID
gdr-78ea9f83
Slug
opcmusic-org
TLD
.org
Status Code
200
Response Time
2081ms
Interior Pages
0
Interior Words
0
Minted At
2026-05-13T20:41:57Z
Law I — Provenance · Law II — Temporal Attestation Visit opcmusic.org ↗
SEO Record extracted from http://www.opcmusic.org/
Title
Oakland Public Conservatory of Music
H1
EXPLORE OUR CURRENT CLASSES
Meta Description
not detected
Canonical URL
https://opcclasses.squarespace.com
Language Attribute
en-US
Word Count
292
Open Graph Tags
og:site_name: Oakland Public Conservatory of Musicog:title: Oakland Public Conservatory of Musicog:url: https://opcclasses.squarespace.comog:type: websiteog:image: http://static1.squarespace.com/static/5a7545df32601ebcc985f208/t/67739bb20e11c20og:image:width: 320og:image:height: 339
Twitter / X Tags
twitter:title: Oakland Public Conservatory of Musictwitter:image: http://static1.squarespace.com/static/5a7545df32601ebcc985f208/t/67739bb20e11c20twitter:url: https://opcclasses.squarespace.comtwitter:card: summary
H2 (1)
Stay Connected To OPC
Full Extracted Text Corpus 1,868 chars · 292 words · 0 pages · Law I
Everything opcmusic.org said about itself — extracted verbatim from 0 pages, 292 words total. No editorial layer. No inference. Law III — the text is the measurement. Meaning is the reader's. Minted: 2026-05-13T20:41:57Z
◈ Homepage — http://www.opcmusic.org/By using this website, you agree to our use of cookies. We use cookies to provide you with a great experience and to help our website run effectively. OK Our Youth Summer Camp Is Now Enrolling—Learn more & sign up today! 0 HOMEABOUT ABOUT OUR TEAM GETTING TO OPC THE OPC BLOG YOUTH PROGRAMS OVERVIEW SUMMER MUSIC ACADEMY AFTERSCHOOL JAZZ AFTERSCHOOL JAZZ FOR GIRLS BLACK GIRLS PLAY MUSIC CLASSES FOR GIRLS ADULT PROGRAMS OVERVIEW CURRENT SCHEDULE BLACK BANJO & FIDDLE FELLOWSHIP ENROLL SUMMER MUSIC ACADEMY 2026 YOUTH CLASSES - SPRING '26 SEMESTER ADULT CLASSES - SPRING '26 SEMESTER INSTRUMENT RENTALS EVENTS UPCOMING EVENTS DONATE DONATE BRICK BY BRICK, NOTE BY NOTE STUDENT LOGIN OPC’s programs celebrate, preserve, and extend the musical heritage of the people of Oakland and the broader Bay Area by providing affordable, culturally sustaining experiences for people of all ages. Cultural Preservation | Music Education LEARN MORE UPCOMING EVENTS Concerts, workshops, masterclasses, and community gatherings. EXPLORE OUR CURRENT CLASSES YOUTH PROGRAMS Afterschool Programs & Summer Opportunities ADULT PROGRAMS Group classes and ensembles for Adults at All Levels ENROLL TODAY Afterschool Jazz Big Band Afterschool Jazz for Girls Black Girls Play Summer Music Academy Adult Classes Black Banjo & Fiddle Fellowship “OPC has helped my daughter grow not just as a musician, but in her confidence as a person... she has grown a love for music, learning, and dedication to her craft.” — RHONA T, PARENT QUESTIONS? CLICK HERE TO EMAIL US. Stay Connected To OPC Sign up with your email address to receive news and updates. Enter contact info. Hit return to submit. SIGN UP We respect your privacy. OAKLAND PUBLIC CONSERVATORY OF MUSIC 492 9th Street Suite 906B Oakland, CA 94607 email: [email protected] phone: 510-836-4649 Powered by Squarespace
◈ Crawled Pages — Provenance Chain
Law I — Provenance · Law III — Reverse Ontology · source: http://www.opcmusic.org/ Visit Source ↗
Root-LD — Traveling Context Pod v1.0 · gdr-78ea9f83 · three layers
14
Graph Edges
292
Tokens Measured
0.7158
Type-Token Ratio
3
Schema Blocks
15%
Schema Coverage
Root-LD is the traveling context pod for this entity — permanent, provenance-grounded. The head <script> block is machine-readable. This section shows the same data to humans. We show the work in both spaces.
Layer 1 — Anchor · Immutable after mint. UUID, federation_id, content hash, timestamps. A new crawl appends to recursive — the anchor is never touched. Law I — Provenance.
rld:anchor — gdr-78ea9f83
{
  "uuid": "78ea9f83-b61c-4240-8d1e-ab79b25d5a3c",
  "federation_id": "gdr-78ea9f83",
  "sequence": 0,
  "content_hash": "0ceb6216a3cb56e79523b57b92bedc2c86351e4b9bf79895616ef753b15cd51f",
  "primary_source": "http://www.opcmusic.org/",
  "source_verified": true,
  "generation_method": "crawl_extract_v1",
  "spec_version": "1.0",
  "queued_at": "2026-05-13T20:41:57.088739+00:00",
  "minted_at": "2026-05-13T20:41:57.088739+00:00"
}
Layer 2 — Body · Complete measurement snapshot frozen at mint. Identity, SEO, schema graph, six-layer topology fingerprint, ratio signals, navigation. Law II — Temporal Attestation.
rld:body — opcmusic.org
{
  "domain": "opcmusic.org",
  "canonical_url": "http://www.opcmusic.org/",
  "tld": "org",
  "slug": "opcmusic-org",
  "status_code": 200,
  "redirect_chain": [],
  "response_time_ms": 2081,
  "ssl_valid": true,
  "server_header": "Squarespace",
  "title": "Oakland Public Conservatory of Music",
  "h1": "EXPLORE OUR CURRENT CLASSES",
  "meta_description": "",
  "lang_declared": "en-US",
  "schema_types": [
    "WebSite",
    "Organization",
    "LocalBusiness"
  ],
  "schema_score": 0.1548,
  "schema_prop_count": 10,
  "schema_gap_list": [
    "issn",
    "funding",
    "provider",
    "genre",
    "wordCount",
    "accessModeSufficient",
    "acquireLicensePage",
    "temporalCoverage",
    "publisher",
    "thumbnail",
    "thumbnailUrl",
    "commentCount",
    "displayLocation",
    "archivedAt",
    "digitalSourceType",
    "assesses",
    "license",
    "keywords",
    "hasPart",
    "funder"
  ],
  "top_semantic_words": [
    "music",
    "programs",
    "classes",
    "summer",
    "opc",
    "afterschool",
    "girls",
    "youth",
    "jazz",
    "black",
    "adult",
    "sign",
    "academy",
    "events",
    "oakland",
    "website",
    "cookies",
    "today",
    "overview",
    "current",
    "banjo",
    "fiddle",
    "fellowship",
    "enroll",
    "spring",
    "semester",
    "upcoming",
    "donate",
    "brick",
    "note",
    "info",
    "using",
    "agree",
    "great",
    "experience",
    "help",
    "effectively",
    "camp",
    "enrolling",
    "homeabout"
  ],
  "ratio_signals": {
    "schema_density": 0.25,
    "nav_ratio": 0.0,
    "content_to_structure_ratio": 0.001786,
    "external_tld_diversity": 2,
    "self_declaration_coherence": 0.3333,
    "schema_to_navigation_alignment": 0.0,
    "javascript_surface_ratio": 0.0,
    "url_depth_distribution": {
      "depth_0": 0,
      "depth_1": 0,
      "depth_2": 0,
      "depth_3plus": 0
    }
  },
  "semantic_html_ratio": 0.0,
  "javascript_surface_ratio": 0.0,
  "img_alt_coverage": 0.0,
  "robots_complexity_score": 0,
  "ariadne_blocked": false,
  "security_label": "MODERATE",
  "https_enforced": true,
  "freshness_label": "CURRENT",
  "tld_starjet_url": "https://globaldataregistry.com/registry/tld/ledger/org",
  "schema_starjet_urls": [
    "https://globaldataregistry.com/registry/schema/ledger/website",
    "https://globaldataregistry.com/registry/schema/ledger/organization",
    "https://globaldataregistry.com/registry/schema/ledger/localbusiness"
  ],
  "native_text_sample": "By using this website, you agree to our use of cookies. We use cookies to provide you with a great experience and to help our website run effectively.\n\nOK\n\nOur Youth Summer Camp Is Now Enrolling—Learn more & sign up today!\n\n 0\nHOMEABOUT\nABOUT\nOUR TEAM\nGETTING TO OPC\nTHE OPC BLOG\nYOUTH PROGRAMS\nOVERVIEW\nSUMMER MUSIC ACADEMY\nAFTERSCHOOL JAZZ\nAFTERSCHOOL JAZZ FOR GIRLS\nBLACK GIRLS PLAY\nMUSIC CLASSES FOR GIRLS\nADULT PROGRAMS\nOVERVIEW\nCURRENT SCHEDULE\nBLACK BANJO & FIDDLE FELLOWSHIP\nENROLL\nSUMMER MUS",
  "topology_fingerprint_version": "1.0.0"
}
Layer 3 — Recursive · Empty at mint. Grows forever through accumulated corpus passes. Common edges (Law V), uncommon edges (Law VI), topology cluster scores. The graph builds itself. Law VII — Torus.
rld:recursive — edge_count=0
{
  "edges": [],
  "appended_at": [],
  "edge_count": 0
}
Root-LD v1.0 · root-ld.org · Law I+II+VII root-ld.org ↗
Schema.org Intelligence scored · graph traversal · Law VI negative space
15% coverage · 3 types · 10 props · 49 gaps · click to expand
15%
Schema Utilization Score
MINIMAL COVERAGE — SIGNIFICANT GAPS
schema.org v2.0.0 · 10 props extracted · 49 gaps · http://www.opcmusic.org/
CreativeWorkWebSiteOrganizationLocalBusiness
◈ Schema Graph — Three-Direction Traversal
Declared: WebSite · Organization · LocalBusiness
✓ Implemented
urlownhttps://opcclasses.squarespace.com
nameownOakland Public Conservatory of Music
descriptionown<p>Sign up for classes at the Oakland Public Conservatory of Music here.&nbsp;</p>
imageown//images.squarespace-cdn.com/content/v1/5a7545df32601ebcc985f208/88aea3af-79e0-4ae3-9ca1-822b9cf5d333/Copy+of+OPC_sign_FullLogo.jpg.png
legalNameownOakland Public Conservatory of Music
addressown3445 San Pablo Avenue Oakland, CA, 94608 United States
telephoneown(510) 836-4649
sameAsownhttp://www.instagram.com/blackbanjofiddle (+2 more)
openingHoursownMo 10:00-17:00, Tu 10:00-17:00, We 10:00-17:00, Th 10:00-17:00, Fr 10:00-15:00, ,
✗ Not Implemented / Gap
foundingDategap
areaServedgap
priceRangegap
geogap
alternateNamegap
hasOfferCataloggap
identifiergap
knowsAboutgap
aggregateRatinggap
slogangap
keywordsgap
contactPointgap
logogap
numberOfEmployeesgap
issngap
fundinggap
providergap
genregap
wordCountgap
accessModeSufficientgap
acquireLicensePagegap
temporalCoveragegap
publishergap
thumbnailgap
thumbnailUrlgap
commentCountgap
displayLocationgap
archivedAtgap
digitalSourceTypegap
assessesgap
licensegap
hasPartgap
fundergap
CreativeWorkancestor +1schema.org/CreativeWork ↗0/111 (0%)
The most generic kind of creative work, including books, movies, photographs, software programs, etc.
fundingprovidergenrewordCountaccessModeSufficientacquireLicensePagetemporalCoveragepublisherthumbnailthumbnailUrl
Thingancestor +2schema.org/Thing ↗5/13 (38%)
The most generic type of item.
sameAsnamedescriptionurlimage
additionalTypeidentifierownersubjectOfmainEntityOfPagepotentialActionalternateNamedisambiguatingDescription
SoftwareApplicationsibling via CreativeWorkschema.org/SoftwareApplication ↗23 exclusive
A software application.
fileSizecountriesSupportedfeatureListprocessorRequirementsstorageRequirementsreleaseNotessoftwareRequirementsoperatingSystem
MediaObjectsibling via CreativeWorkschema.org/MediaObject ↗18 exclusive
A media object, such as an image, video, audio, or text object embedded in a web page or a downloadable dataset i.e. DataDownload. Note that a creative work may
durationassociatedArticleheightstartTimeplayerTypesha256uploadDateineligibleRegion
VisualArtworksibling via CreativeWorkschema.org/VisualArtwork ↗13 exclusive
A work of art that is primarily visual in character.
weightheightcoloristartworkSurfaceartistartformdepthartEdition
CreativeWorkSeasonsibling via CreativeWorkschema.org/CreativeWorkSeason ↗10 exclusive
A media season, e.g. TV, radio, video game etc.
endDateseasonNumberactorepisodestartDatetrailernumberOfEpisodespartOfSeries
Coursesibling via CreativeWorkschema.org/Course ↗10 exclusive
A description of an educational course which may be offered as distinct instances which take place at different times or take place at different locations, or b
numberOfCreditssyllabusSectionseducationalCredentialAwardedhasCourseInstancetotalHistoricalEnrollmentfinancialAidEligiblecoursePrerequisitesoccupationalCredentialAwarded
MusicCompositionsibling via CreativeWorkschema.org/MusicComposition ↗10 exclusive
A musical composition.
recordedAsfirstPerformancelyricsmusicArrangementlyricistcomposeriswcCodemusicCompositionForm
TVSeriessibling via CreativeWorkschema.org/TVSeries ↗10 exclusive
CreativeWorkSeries dedicated to TV broadcast and associated online delivery.
containsSeasonmusicByactornumberOfSeasonsepisodetrailertitleEIDRnumberOfEpisodes
WebPagesibling via CreativeWorkschema.org/WebPage ↗9 exclusive
A web page. Every web page is implicitly assumed to be declared to be of type WebPage, so the various properties about that webpage, such as <code>breadcrumb</c
breadcrumbsignificantLinkmainContentOfPagereviewedByspeakablelastReviewedspecialtyrelatedLink
Reviewsibling via CreativeWorkschema.org/Review ↗9 exclusive
A review of an item - for example, of a restaurant, movie, or store.
itemReviewedassociatedClaimReviewpositiveNotesreviewAspectnegativeNotesassociatedMediaReviewreviewRatingassociatedReview
Clipsibling via CreativeWorkschema.org/Clip ↗9 exclusive
A short TV or radio program or a segment/part of a program.
endOffsetmusicBypartOfSeasonclipNumberactorpartOfSeriespartOfEpisodestartOffset
Episodesibling via CreativeWorkschema.org/Episode ↗9 exclusive
A media episode (e.g. TV, radio, video game) which can be part of a series or season.
durationmusicBypartOfSeasonactortrailerepisodeNumberpartOfSeriesproductionCompany
Messagesibling via CreativeWorkschema.org/Message ↗9 exclusive
A single message from a sender to one or more organizations or people.
toRecipientccRecipientdateReceivedrecipientdateReaddateSentbccRecipientmessageAttachment
HowTosibling via CreativeWorkschema.org/HowTo ↗8 exclusive
Instructions that explain how to achieve a result by performing a sequence of steps.
prepTimetoolstepyieldsupplyestimatedCosttotalTimeperformTime
Moviesibling via CreativeWorkschema.org/Movie ↗8 exclusive
A movie.
durationmusicByactortrailertitleEIDRsubtitleLanguageproductionCompanydirector
ExercisePlansibling via CreativeWorkschema.org/ExercisePlan ↗8 exclusive
Fitness-related activity designed for a specific health-related purpose, including defined exercise routines as well as activity prescribed by a clinician.
exerciseTypeworkloadintensityrepetitionsactivityFrequencyrestPeriodsadditionalVariableactivityDuration
No child types — leaf node.
◈ Structural Negative Type Space — Constitutional Law VI
◈ Action Branch

No structural connection to the Action branch. Graph position measurement. schema.org/Action ↗ · Law III — meaning is yours.

◈ BioChemEntity Branch

No structural connection to the BioChemEntity branch. Graph position measurement. schema.org/BioChemEntity ↗ · Law III — meaning is yours.

◈ Event Branch

No structural connection to the Event branch. Graph position measurement. schema.org/Event ↗ · Law III — meaning is yours.

◈ Intangible Branch

No structural connection to the Intangible branch. Graph position measurement. schema.org/Intangible ↗ · Law III — meaning is yours.

◈ MedicalEntity Branch

No structural connection to the MedicalEntity branch. Graph position measurement. schema.org/MedicalEntity ↗ · Law III — meaning is yours.

◈ Organization Branch

No structural connection to the Organization branch. Graph position measurement. schema.org/Organization ↗ · Law III — meaning is yours.

◈ Person Branch

No structural connection to the Person branch. Graph position measurement. schema.org/Person ↗ · Law III — meaning is yours.

◈ Place Branch

No structural connection to the Place branch. Graph position measurement. schema.org/Place ↗ · Law III — meaning is yours.

◈ Product Branch

No structural connection to the Product branch. Graph position measurement. schema.org/Product ↗ · Law III — meaning is yours.

◈ Taxon Branch

No structural connection to the Taxon branch. Graph position measurement. schema.org/Taxon ↗ · Law III — meaning is yours.

◈ Gap List (49 properties unmapped)
issnfundingprovidergenrewordCountaccessModeSufficientacquireLicensePagetemporalCoveragepublisherthumbnailthumbnailUrlcommentCountdisplayLocationarchivedAtdigitalSourceTypeassesseslicensekeywordshasPartfunderaccessModeaggregateRatingmaterialaccessibilityControlrecordedAtmaintainertimeRequiredisBasedOneditEIDRsize
+19 more gaps not shown
◈ Source Schema.org — Raw Extraction (3 blocks)
Block 1 · @type: WebSite
{
  "url": "https://opcclasses.squarespace.com",
  "name": "Oakland Public Conservatory of Music",
  "description": "<p>Sign up for classes at the Oakland Public Conservatory of Music here.&nbsp;</p>",
  "image": "//images.squarespace-cdn.com/content/v1/5a7545df32601ebcc985f208/88aea3af-79e0-4ae3-9ca1-822b9cf5d333/Copy+of+OPC_sign_FullLogo.jpg.png",
  "@context": "http://schema.org",
  "@type": "WebSite"
}
◈ Source: http://www.opcmusic.org/ · Law I — Provenance
Block 2 · @type: Organization
{
  "legalName": "Oakland Public Conservatory of Music",
  "address": "3445 San Pablo Avenue\nOakland, CA, 94608\nUnited States",
  "email": "[email protected]",
  "telephone": "(510) 836-4649",
  "sameAs": [
    "http://www.instagram.com/blackbanjofiddle",
    "http://instagram.com/oaklandpublicconservatory",
    "http://facebook.com/OPCMusic"
  ],
  "@context": "http://schema.org",
  "@type": "Organization"
}
◈ Source: http://www.opcmusic.org/ · Law I — Provenance
Block 3 · @type: LocalBusiness
{
  "address": "3445 San Pablo Avenue\nOakland, CA, 94608\nUnited States",
  "image": "https://static1.squarespace.com/static/5a7545df32601ebcc985f208/t/63d57f51b91c4212f585df6a/1778703571554/",
  "name": "Oakland Public Conservatory of Music",
  "openingHours": "Mo 10:00-17:00, Tu 10:00-17:00, We 10:00-17:00, Th 10:00-17:00, Fr 10:00-15:00, , ",
  "@context": "http://schema.org",
  "@type": "LocalBusiness"
}
◈ Source: http://www.opcmusic.org/ · Law I — Provenance
schema.org v2.0.0 · source: http://www.opcmusic.org/ schema.org/WebSite ↗
Semantic Words 40 words · frequency ranked · Law III
40 words · top 5: music · programs · classes · summer · opc · click to expand
Top 40 words by frequency from http://www.opcmusic.org/ + 0 interior pages (0 words total). Stop-words stripped. Ranked by repetition.
#1music7x · 4.05%
#2programs6x · 3.47%
#3classes6x · 3.47%
#4summer5x · 2.89%
#5opc5x · 2.89%
#6afterschool5x · 2.89%
#7girls5x · 2.89%
#8youth4x · 2.31%
#9jazz4x · 2.31%
#10black4x · 2.31%
#11adult4x · 2.31%
#12sign3x · 1.73%
#13academy3x · 1.73%
#14events3x · 1.73%
#15oakland3x · 1.73%
#16website2x · 1.16%
#17cookies2x · 1.16%
#18today2x · 1.16%
#19overview2x · 1.16%
#20current2x · 1.16%
#21banjo2x · 1.16%
#22fiddle2x · 1.16%
#23fellowship2x · 1.16%
#24enroll2x · 1.16%
#25spring2x · 1.16%
#26semester2x · 1.16%
#27upcoming2x · 1.16%
#28donate2x · 1.16%
#29brick2x · 1.16%
#30note2x · 1.16%
#31info2x · 1.16%
#32using1x · 0.58%
#33agree1x · 0.58%
#34great1x · 0.58%
#35experience1x · 0.58%
#36help1x · 0.58%
#37effectively1x · 0.58%
#38camp1x · 0.58%
#39enrolling1x · 0.58%
#40homeabout1x · 0.58%
Law III — frequency measured, meaning is the reader's · source: http://www.opcmusic.org/
Text Topology Fingerprint v1.0.0 · short · 1,868 chars · Law III
Six-layer pre-linguistic shape measurement. Deterministic. Same input, same output, always. Hash: 22bdc7ea841cd50f7720f7da3f328c9c...
◈ Signal Matrix
0.716
TTR
0.538
HAPAX
0.462
REP
0.103
BIGRAM
0.751
H2T
0.493
CPRT
1.719
SKEW
1.367
KURT
0.929
C/P
1.594
PENT
0.833
S1P
0.003
NASC
TTR=type-token ratio · HAPAX=hapax ratio · REP=repetition score · BIGRAM=bigram repetition · H2T=hapax-to-type · CPRT=capital token ratio · SKEW=sentence skewness · KURT=sentence kurtosis · C/P=comma-period ratio · PENT=punct entropy · S1P=single-sent para ratio · NASC=non-ASCII ratio
◈ Topology Position
Latin dominant · high lexical diversity · short-form declarative register · moderate clause complexity · broad topic range · strong uncommon edge signal
◈ Six Measurement Layers
Layer 1 — Character
0.0027
Non-ASCII Ratio
0.0 = Latin-dominant · 1.0 = fully non-Latin script
Layer 1 — Character
3.6889
Character Entropy
Shannon entropy of character distribution.
Layer 1 — Character
'e' (106x)
Most Frequent
Highest-frequency character. Law V — common edge.
Layer 2 — Token
0.7158
Type-Token Ratio
Unique tokens / total tokens. Lexical diversity signal.
Layer 2 — Token
0.5377
Hapax Ratio
Tokens appearing exactly once. Law VI — uncommon edge.
Layer 6 — Document
0.7512
Hapax to Type
Hapax count / unique token count.
Layer 3 — Punctuation
0.9286
Comma/Period Ratio
Clause complexity per sentence.
Layer 3 — Punctuation
1.5935
Punct Entropy
Shannon entropy across punctuation types.
Layer 4 — Sentence
11
Sentence Count
Total detected sentences across all crawled pages.
Layer 4 — Sentence
1.7193
Skewness
Positive = long-tail. Negative = conversational.
Layer 5 — Paragraph
0.8333
Single Sent Ratio
High = web copy. Low = academic prose.
Layer 6 — Document
0.4623
Repetition Score
Tokens appearing more than once / total.
◈ Token Length Distribution
1-3
32%
4-6
37%
7-10
25%
11-15
5%
16-20
0%
21+
0%
◈ Density Gradient — TTR per Document Tenth
Front-loaded = abstract/preamble · Flat = consistent prose · Back-loaded = building complexity
◈ Lexical Richness Curve — Rolling Window TTR
0.60.92
Window=50 tokens · Step=25 · 10 data points
topology_fingerprint.py v1.0.0 · sha256: 22bdc7ea841cd50f... · Law III + Law VI
Ratio Signals 8 deterministic measurements · the gap is the signal
Eight deterministic measurements. Law I: every value traces to its source stage.
schema density
0.2500
Schema props extracted / top semantic words.
nav ratio
0.0000
Nav URLs / total internal URLs.
content to structure ratio
0.0018
Total words / raw HTML bytes. Content density.
external tld diversity
2
Unique TLD count in outbound links.
self declaration coherence
0.3333
Fuzzy overlap across title / H1 / meta / schema name.
schema to nav alignment
0.0000
Schema type tokens vs nav link text overlap.
javascript surface ratio
0.0000
Fraction of interior pages JS-gated.
URL Depth Distribution
depth_0: 0 · depth_1: 0 · depth_2: 0 · depth_3plus: 0
Internal URLs by path depth. Depth 0 = root.
Tech Stack · Security · Freshness SecurityLabel.MODERATE · FreshnessLabel.CURRENT
Sitemap: ✗Robots.txt: ✗Schema.org: ✓Open Graph: ✓Canonical: ✓HTTPS: ✓HSTS: ✓CSP: ✗
Security
SecurityLabel.MODERATE
Freshness
FreshnessLabel.CURRENT
Server
Squarespace
cmsSquarespace
web_serverSquarespace
analytics['Google Analytics', 'Google Tag Manager']
Ledger Appends 4 ledgers · graph edge traversal · Law V+VII
Every ledger this entity appends to. Follow any link to see every other entity in the registry that shares that TLD or schema type. Law VII — Torus. The corridor never ends.
TLD LEDGER
.org
https://globaldataregistry.com/registry/tld/ledger/org ↗
SCHEMA LEDGER
website
https://globaldataregistry.com/registry/schema/ledger/website ↗
SCHEMA LEDGER
organization
https://globaldataregistry.com/registry/schema/ledger/organization ↗
SCHEMA LEDGER
localbusiness
https://globaldataregistry.com/registry/schema/ledger/localbusiness ↗
Law V — Common Edge · Law VII — Torus · 4 ledger appends
Build: national-transit-v1.0.0 Spec: Root-LD v1.0 Status: LIVE Minted: 2026-05-13
opcmusic.org · gdr-78ea9f83
opcmusic.org is recorded in the Global Data Registry — open provenance infrastructure for the machine-readable web.
View the Registry →