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 0x3a389c4652b025cb40cd3ccdb71d4314f256aa055f3a3a7c3355a4a85af88c41. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/543e13c7-11e5-42bb-b25f-5940230c9c8b.json and https://artists.proofprofile.net/proofs/artist/543e13c7-11e5-42bb-b25f-5940230c9c8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musik für die Arbeit: Die beste Musik für Arbeit und Konzentration
Arbeitsmusik: Hintergrundmusik für Produktivität
Musik Für Die Arbeit: Entspannende Musik für Mehr Produktivität
Musik für die Arbeit: Ambient-Arbeitsmusik für Konzentration
Arbeitsmusik: Hintergrundmusik für die Arbeit im Büro
Arbeitsmusik: Sanfte Büromusik und Musik zur Konzentration
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 0x5fc000fabaa4ac1223029afa076f0b0540d4c8044550cc24ca4a0996f7b60356. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ5FN2275490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1858e29b36c957ed421e85721190093feda9d36437337d42175bafcf3adc0754. 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/QZ5FN2275501.
Arbeit: Studieren im Hintergrund, Musik für Produktivität
Arbeit: Hintergrundmusik für Konzentration und Produktivität
Arbeitsmusik: Ambient-Musik für Arbeit und Konzentration
Schwerpunkt: Hintergrundmusik für Die Büroarbeit
Arbeitsmusik: Hintergrundmusik für Produktivität Vol. 2
Arbeit: Gitarrenmusik für die Arbeitsproduktivität
Musik für Die Arbeit: Konzentration, Fokus und Scharfes Gedächtnis
Büromusik: Musik für Hintergrundarbeit und Produktivität
Spa-Schlafmusik: Ruhige Klänge, die Sie in den Schlaf fegen
Konzentrationsklang: Musik für effektives Arbeiten
Weißes Rauschen & Therapie: Schwingungsheilung mit Klang
Musik für Studium und Arbeit: Elevated Focus State
Geräusche der Natur: Weißes Rauschen der Wildnis
Regen Spa Klänge: Entspannender Regensturm und fernes Donnern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fec0838fc8e4710784f6d553b3c5dd1bb317fe27184c6fc87026f31cad8ee4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS85519678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd26a0fbc655c33086e1553b69cbaa20a86c6e944dd9218c07079dc6fa869e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS85519617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2408d8c25347bceee45b3787172d58b147136012790cc3ed004ce0b0fd2f2e5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBPS85505454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb9c3e647b93b0bf3a478f9050d482ff2b713d2d933b2db5e132f0a7e84a60. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBPS85519700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb94c94a41a2d6c68360aa80f5c424e60b0607b50d188648c485fcc880ca11fd. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:45Z), 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/GBPS85505432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f3b9cb5cbd361a5beda73dd8584c3a146135be1eda353fe34dde68d78ba714. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBPS85505520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ac27aced037bd7d8f9ecf5b583d6637f70a97e58356816eed572182e7e8fd3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBPS85505522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa6fd2f2510e6fb29a2b2315e0bc606828efb2465cbb7b0a603404fdb8c3ca7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBPS85519737.