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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ace4960a2de225c787e4c38fe3df5b6cab94e1dcb9a3e757e10daf5c2a4a83. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7458439-5cb5-4701-a432-02d019469c6d.json and https://artists.proofprofile.net/proofs/artist/b7458439-5cb5-4701-a432-02d019469c6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Piano Music Dreams - Musik zum Genießen, für Feste und Anlässe, Vol. 1
Klassik für Kinder - Schöne Klassische Melodien und Musik, Inspiration & Entspannung für das Kind
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbab83a56cccbb60364517951cedd24e5627e3eee95805cd1264e855f534061. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DELD90806290.
Klassische Musik für mehr Konzentration, Energie, gesteigerte Gehirnleistung
Classical Music for More Concentration, Energy, Increased Brain Power - Neoclassical, Classical
Klassik Piano zum Einschlafen und Träumen (Klassische Klavier Musik für Kinder und Erwachsene)
Piano Einschlaf Walzer für Kinder und Erwachsene
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3007067a407fa7a035b449689bf9e5ea7b9e9890ed8e00b9efd5a11a339b0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:37:38Z), 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/DELD92101226.
Klassik und Natur - zum Träumen und Einschlafen