Four layers: (1) Legal — NIB/TDUP/AHU registration verifiable on Indonesian government registries; (2) Police — founder Bripka Agung Sambuko's SPRIN-POLPAR and SPRIN-WAL-TRAVEL assignment documents plus Detik.com identity confirmation; (3) Press & Recognition — the Stefan Loose editorial feature, the Booking.com 2015 award, and the Detik 2021 article; (4) History & Artifacts — operational continuity from the 2015 guesthouse era through the 2023 PT formalization.
Operational TransparencyFILE 006 / PROOF LIBRARY
Don’t guess. Verify.
Audit JVTO's legal identity, historical continuity, and safety authority through our verifiable proof library.
Last reviewed 2026-08-06
JVTO publishes 12 official authority documents, 5 independent press references and 17 operational records, each anchored to a SHA-256 hash that is re-verified weekly. The legal entity is PT Java Volcano Rendezvous, NIB (Indonesian Business Identification Number) 1102230032918, with TDUP (Tourism Business Registration) issued 2023-02-11. Every claim here can be checked against an Indonesian government registry before you book.
DatabaseEvidence_Database_v2.0
Official documents12
Media references5
Operational records17
Hashes re-verified2026-09-14
StatusOPEN
EVIDENCE_DATABASE_v2.0
Official authority
NIB (Nomor Induk Berusaha)
NIB 1102230032918 preview image (WebP).
Legal · Business IDOpen →
Official authority
TDUP (Tanda Daftar Usaha Pariwisata)
TDUP licence preview image (WebP).
Legal · LicenseOpen →
Official authority
HPWKI — Supervisory Board member (Pengawas · Anggota), held by founder Agung Sambuko
HPWKI approval letter preview image (WebP).
Legal · MemberOpen →
Official authority
SPRIN POLPAR (Tourist Police Assignment Letter)
Tourist Police assignment letter (SPRIN POLPAR) preview image.
Safety · PoliceOpen →
Official authority
SPRIN WAL-TRAVEL — traffic-escort order Sprin/70/II/HUK.6.6./2024, 12 February 2024
Police travel order (SPRIN WAL-TRAVEL), 12 Feb 2024 preview image.
Safety · PoliceOpen →
Official authority
HPWKI licence (KTA) of Anjas.
HPWKI licence (KTA) of Anjas.
Safety · CredentialsOpen →
Official authority
HPWKI licence (KTA) of Gufron.
HPWKI licence (KTA) of Gufron.
Safety · CredentialsOpen →
Official authority
HPWKI licence (KTA) of Kiki.
HPWKI licence (KTA) of Kiki.
Safety · CredentialsOpen →
Official authority
HPWKI licence (KTA) of Rendi.
HPWKI licence (KTA) of Rendi.
Safety · CredentialsOpen →
Official authority
HPWKI licence (KTA) of Taufik.
HPWKI licence (KTA) of Taufik.
Safety · CredentialsOpen →
Official authority
Crater access terms (screenshot, tiket.bbksdajatim.org): health requirements and doctor certificate. That portal is retired; the current authority is ayoketamannasional.kehutanan.go.id
Crater access terms (screenshot, tiket.bbksdajatim.org): health requirements and doctor certificate. That portal is retired; the current authority is ayoketamannasional.kehutanan.go.id
Safety · ScreeningOpen →
Official authority
Surat Izin Praktik (SIP) — dr. Ahmad Irwandanu (Bondowoso)
Surat Izin Praktik (SIP) — dr. Ahmad Irwandanu (Bondowoso)
Safety · ScreeningOpen →
Independent media
Early third-party mention in a European travel guide.
Early third-party mention in a European travel guide.
History · ArchiveOpen →
Independent media
BBKSDA Jatim official training article: HPWKI members participate in Ijen guide safety training (SAR & emergency first aid).
BBKSDA Jatim official training article: HPWKI members participate in Ijen guide safety training (SAR & emergency first aid).
Press · MediaOpen →
Independent media
Press mention screenshot (Detik.com) with founder name variant in Tourist Police context.
Press mention screenshot (Detik.com) with founder name variant in Tourist Police context.
Press · MediaOpen →
Independent media
Press mention screenshot (Radar Jember) about Tourist Police formation for Ijen Geopark.
Press mention screenshot (Radar Jember) about Tourist Police formation for Ijen Geopark.
Press · MediaOpen →
Independent media
Stefan Loose Reiseführer Indonesien, Ost-JAVA | Ijen-Massiv, page 287.
Stefan Loose Reiseführer Indonesien, Ost-JAVA | Ijen-Massiv, page 287.
History · ArchiveOpen →
Operational record
Active Tourist Police leadership behind every JVTO trip.
Active Tourist Police leadership behind every JVTO trip.
Safety · FounderOpen →
Operational record
Pre-ascent lineup at Baratha Hotel with Tourist Police support.
Pre-ascent lineup at Baratha Hotel with Tourist Police support.
Safety · OperationsOpen →
Operational record
International group visiting JVTO Bondowoso operations office.
International group visiting JVTO Bondowoso operations office.
Safety · OperationsOpen →
Operational record
Evening welcome with guests at JVTO office.
Evening welcome with guests at JVTO office.
Safety · OperationsOpen →
Operational record
Tourist Police briefing at Ijen Geopark Information Center with local miners present.
Tourist Police briefing at Ijen Geopark Information Center with local miners present.
Safety · OperationsOpen →
Operational record
JVTO Bondowoso operations office.
JVTO Bondowoso operations office.
Safety · OperationsOpen →
Operational record
Traffic Police escorted arrival at the hotel in Bondowoso group photo with the patrol car.
Traffic Police escorted arrival at the hotel in Bondowoso group photo with the patrol car.
Safety · OperationsOpen →
Operational record
Arriving in Bondowoso with a Traffic Police escort group photo at the hotel after the journey.
Arriving in Bondowoso with a Traffic Police escort group photo at the hotel after the journey.
Safety · OperationsOpen →
Operational record
Police support vehicle and group prior to departure.
Police support vehicle and group prior to departure.
Safety · OperationsOpen →
Operational record
Pre-ascent health screening at partner hotel.
Pre-ascent health screening at partner hotel.
Safety · ScreeningOpen →
Operational record
Vitals taken and logged before night ascent.
Vitals taken and logged before night ascent.
Safety · ScreeningOpen →
Operational record
Digitally recorded, signed clearance issuance.
Digitally recorded, signed clearance issuance.
Safety · ScreeningOpen →
Operational record
Screening can be done at hotel or office.
Screening can be done at hotel or office.
Safety · ScreeningOpen →
Operational record
Sample printout of health clearance (surat sehat) preview image.
Sample printout of health clearance (surat sehat) preview image.
Safety · ScreeningOpen →
Operational record
Founder with Guests Holding Stefan Loose Guidebook (Homestad Era)
Founder with Guests Holding Stefan Loose Guidebook (Homestad Era)
History · ArchiveOpen →
Operational record
Booking.com Guest Review Award 2015 — Shipping Label (box)
Booking.com Guest Review Award 2015 — Shipping Label (box)
History · ArchiveOpen →
Operational record
Booking.com Guest Review Award 2015 — Plaque + Award Letter
Booking.com Guest Review Award 2015 — Plaque + Award Letter
History · ArchiveOpen →
§ 02
History & continuity.
Since 2015JVTO is not a new startup. We have a documented history of operational excellence and the same legal entity since day one.
- '15
2015 · Guesthouse
Mr. Sam opens the Ijen Bondowoso Homestay on Jl. Khairil Anwar No.102. Booking.com guests rate it 9.4/10.
- '18
2018 · Stefan Loose listing
Stefan Loose Reiseführer Indonesien (4th ed., p. 287) names "Agung" as operator — an independent German guidebook.
- '21
2021 · Independent press
Detik.com and Radar Jember name Bripka Agung Sambuko in Tourist Police duties at Ijen Geopark.
- '23
2023 · TDUP formalized
Tourism Business Permit formalized 2023-02-11. NIB 1102230032918 OSS-verifiable.
- '26
2026 · Today
17 private itineraries; 14-person crew (11 KTA-confirmed); coordinated Ijen health screening with a licensed physician.
Bripka Agung Sambuko
Active Tourist Police · POLPAR Bondowoso, POLRI
§ 03
Police & safety proof.
Tourist Police Leadership
Founder Agung Sambuko is an active member of the Indonesian Tourist Police (POLRI). Official assignment orders (SPRIN) are published in the proof library — independently verifiable.
Ijen Health Screening
Mandatory for every Ijen guest under BBKSDA SE.35/K2/BIDTEK.1/KSA/1/2024, JVTO coordinates the health certificate process with licensed physician Dr. Ahmad Irwandanu — every screening is documented and real.
HPWKI-Certified Guides
All JVTO Ijen guides hold KTA cards from HPWKI — the state-recognized Ijen specialist association. BBKSDA Jawa Timur ran a 3-day search-and-rescue and emergency-medical (PPGD) training for 250 HPWKI guides at Paltuding on 20–22 May 2024.
§ 04
Independent platform ratings.
Trustpilot · Tripadvisor · GoogleTrustpilot
4.7 / 5
61 verified reviews
View profile →Google Maps
4.9 / 5
184 reviews · verified location
View profile →TripAdvisor
4.95 / 5
21 reviews
View profile →266 independent reviews across three platforms · Trustpilot is the schema-primary source
§ 05
Verification FAQ.
Is Java Volcano Tour Operator a legal business?
Yes. JVTO operates under PT Java Volcano Rendezvous with Business Identification Number (NIB) 1102230032918, verifiable via oss.go.id (Indonesia Online Single Submission portal).
Is Agung Sambuko really a police officer?
Yes. Agung Sambuko is an active member of the Indonesian Tourist Police (POLPAR), Polres (district police command) Bondowoso. Official SPRIN (Surat Perintah) assignment orders are published in the proof library below.
How can I verify the documents provided by JVTO?
Documents in the Evidence Locker include a SHA-256 hash. Download the original file and compare its hash to the published value to detect any tampering — mathematically certain proof.
What safety standards does JVTO follow for Ijen Crater tours?
Every climber undergoes a formal health screening, mandatory under BBKSDA SE.35/K2/BIDTEK.1/KSA/1/2024, with licensed physician Dr. Ahmad Irwandanu. HPWKI-certified guides lead all crater descents.
FAQ