1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29870c6f20c63aa6d5df07e838a0e2950bd1ec2b430e29ebe983b52beb352733. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a6da80b-d767-4882-8647-483b6a5778c0.json and https://artists.proofprofile.net/proofs/artist/9a6da80b-d767-4882-8647-483b6a5778c0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Histoire Vraie (Original Short Film Soundtrack)
UP'LIFE (Original Short Film Soundtrack)
Somnambule (Original Short Film Soundtrack)
Le Dernier Monde (Sélections de la Web Série)
Thug Life: Saison 3 (Musique originale de la série)
CALLS: Season One (Original Soundtrack from the TV Series)
Peacefully Contemplating the Earth Burn (Original Motion Picture Sountrack)
Pekuakami (Original Motion Picture Soundtrack)
La Pierre Précieuse (Extrait du court-métrage "Le Monde à L'Envers")
CALLS: Chapter Two (Original Soundtrack from the TV Series)
La Compilation du Monde à L'Envers, Vol. 1
L'Employé (Original Soundtrack from the Audio Drama)
Insomnie (Bande originale de l'émission)
A Story of Dead Landes (2020 Remastered)
CALLS: The Lost Tapes (Original Sound Design from the TV Series)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4951c46f7cc56cdaeb238df69ec75b4d82fcad2c90810434f9e30f26a8b8249a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2070405 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c13e9ee98118c2af374ba740135644e5a3495e7e667c44a269052b6c197abe. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2072826 — a six-check JSON result.
Luna 25 (Original Motion Picture Soundtrack)
On the Road of a Nomad (Original Documentary Soundtrack)
Classé F Main Theme (Original Soundtrack from "Classé F")
Bloom - Episode 4 (Original Soundtrack from "Classé F")
Iris Page One - Episode 1 (Original Soundtrack from "Classé F")
Classé F (Original Soundtrack from the Series)
Classé F (Original Soundtrack from the WWF France Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ef5dd1c1be38bdebdcd8105d4c2e39dd40b19045cf1024c2a029213125cec6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8E72200479 — a six-check JSON result.
Melancholic Feel (Ambre & Thelma's Version)
Melancholic Feel (Nostalgic Relapse's Version)
Melancholic Feel: An Operatic Kind of Sleep