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 0x32e6a66ef0faac1d25229ea03fb507bd149aed995e281195eab38e5df8fceff0. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85611716-a3c5-4b91-bae0-d51ca13fe253.json and https://artists.proofprofile.net/proofs/artist/85611716-a3c5-4b91-bae0-d51ca13fe253.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dance Studio & Ballet School Instrumental Music – Piano Classics and Background Music for Ballet Class, Contemporary Dance & Ballet Barre
Dance Academy: Musique de Piano Classique pour Cours de Danse pour Enfants, Piano Solo pour Apprendre la Danse Classique
Ballet – Musique Piano Classique pour Danse Classique, Moderne et Contemporaine, Chansons pour Corps De Ballet, École de Danse et Stages de Danse
Piano Smooth Jazz for Ballet – Piano Solo & Jazz Music for Ballet Academy
Ballet Music – Classical Piano Songs for Ballet, Jazz, Contemporary and Dance Classes for Kids
Ballet Songs like the Classics – Orchestra and Piano Music for Ballet, Choreography and Modern Dance Improvisations
Ballet - 60 Minute Workout (Musique Relaxante de Piano, Tango & Jazz)
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 0x4f8daffad038463b87d59f39f6af724951a652bcc01d5b6dfaec5da0a5c8b00e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US83Z2410860.