Realurls

Kotlin

Also known as kotlinlang. Wikidata Q3816639. GitHub Kotlin.

Official domains: kotlinlang.org

Identity anchored by wikidata:Q3816639/P856 wikidata:Q3816639/P2037. Display name from wikidata:Q3816639.

kotlinlang.org verified primary · confidence 0.85 · verified 2026-09-05

1 independent anchor(s) + 3 independent corroboration(s): meets the verified threshold

EvidenceWhat it shows
A1 anchor GitHub verified this organization's domain (DNS-level check performed by GitHub)
org=Kotlin org_verified=true blog=https://kotlinlang.org
 source
A8 not counted Anchored repository's homepage points here, and this site links back
repo=Kotlin/kotlinx.coroutines org=Kotlin repo_anchored=true homepage= backlink=false stars=13813 age_days=3727 contributors=337
 source
A3 not counted Corporate registrar fingerprint (brand-protection registrar, long prepaid term, registry locks)
registrar=Squarespace Domains II LLC created=2013-09-30 expires=2026-09-30 remaining_days=24 locks=["delete","transfer"]
 source
A4 not counted TLS certificate carries the organization name (OV/EV)
subject_org= validation_type=DV issuer=Amazon san_count=4
 TLS handshake kotlinlang.org:443
B1 corroboration Wikidata official-website claim (P856) on the anchored item
qid=Q3816639 label=Kotlin site=https://kotlinlang.org/ sitelinks=61 competing_items=0
 source
B5 corroboration Tranco top-1M ranking
rank=26454 source=top-1m list
 source
B4 corroboration Wayback Machine history
first_snapshot=2014-07-18 history_days=4432
 source
3 piece(s) of evidence not counted — why
  • A8: repository homepage () does not point to this domain
  • A3: registrar (Squarespace Domains II LLC) is not a brand-protection registrar
  • A4: DV certificate carries no organization name (most modern tech companies use DV; this is expected)
Reproduce this yourself
# A1 — GitHub verified this org's domain
curl -s https://api.github.com/orgs/Kotlin | jq '{name, blog, is_verified}'

# A8 — anchored repo's homepage
curl -s https://api.github.com/repos/Kotlin/kotlinx.coroutines | jq '{homepage, created_at, stargazers_count}'

# A3 — registrar / dates / locks
curl -sL https://rdap.org/domain/kotlinlang.org | jq '{status, events, registrar: [.entities[]|select(.roles[]=="registrar")|.vcardArray[1][1][3]]}'

# B1 — Wikidata P856
curl -s "https://www.wikidata.org/w/api.php?action=wbgetclaims&entity=Q3816639&property=P856&format=json"

# B5 — Tranco rank
curl -s https://tranco-list.eu/api/ranks/domain/kotlinlang.org

# B4 — first Wayback snapshot
curl -s "http://web.archive.org/cdx/search/cdx?url=kotlinlang.org&limit=1&output=json"

# Re-run the whole pipeline for this domain
git clone https://github.com/zhouchungong/realurls-registry && cd realurls-registry && pip install -e . && python -m src.verify kotlinlang.org

Think this is wrong? Open a dispute — the burden of proof is on us, and the record is downgraded while we check. Source record: YAML.