1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7899de9272790e1c8f9995221644721805622838e9a649143f9fcf7cf63f1058. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0621f7c6-02c4-4a6a-bedb-07462d7dde5a.json and https://artists.proofprofile.net/proofs/artist/0621f7c6-02c4-4a6a-bedb-07462d7dde5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Stranger Came to Town (Halal Docs) [Original Soundtrack]
Andere Tijden Sport: Willem (Original Documentary Score)
Mijn Dochter de Vlogger (Original Documentary Score)
De Migrant (Original Documentary Soundtrack)
Music for City Gazing: Singapore Light Festival
1984: Economic Prosperity / Present / Future
Volg Je Me Nog? (Original Documentary Soundtrack)
Sara's Mysteries (Original Podcast Sountrack)
Alles Kan Veranderen (Sara's Mysteries Tune)
Pixelshit: Ik Heb Iets Te Vertellen (Intro Reprise)
Baba: Slagroombollen Torens in Zandpoort
PIM: Twintig Jaar Na De Moord (Original Podcast Soundtrack)
PIM: Twintig Jaar Na de Moord (Opening Titles)
PIM: Twintig Jaar Na De Moord (Closing Titles)
De Sneeuwman (Original TV Series Soundtrack)
Long Covid: De Schaduwpandemie (Original Podcast Soundtrack)
De Coup van Qatar (Original Podcast Soundtrack)
Hier Hing Een Schilderij (Original Podcast Soundtrack)
Hier Hing Een Schilderij (Opening Titles)
Ik Wil Je Nog Iets Vragen (Original Podcast Soundtrack)
Waar Is Sarah? (Original Podcast Soundtrack)
Hoe Kaas De Wereld Redt (Original Podcast Soundtrack)
Hoe Kaas De Wereld Redt (Opening Titles)
Zo Dood Als Een Pier (Original Documentary Soundtrack)
De Zaak Rombley (Original Documentary Soundtrack)
The Reclaimers (Original Horror Soundtrack)
Handicapable (Original Series Soundtrack)
Spijtmoeders (Original Documentary Soundtrack)