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 0xaa9a60bb1239e10af7e6c0636fb5cd7f5af60c2223002c54c04e6547a5eb2767. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9acaf18-8157-455c-b344-43603c1ab981.json and https://artists.proofprofile.net/proofs/artist/e9acaf18-8157-455c-b344-43603c1ab981.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weniger Stress durch Autogenes Training (Einfache Übungen und Formeln zur Entspannung)
Weniger Stress durch Meditative Entspannung
Autogenes Training, Muskelentspannung & Meditative Entspannung zum Kennenlernen!
Weniger Stress durch Autogenes Training II
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 0x95ff317030e902915a18224fdabb01a1eee9d905f19dcb42bc156980768af5db. 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/DEBL61106293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5dd40ac6717525a501fb7525d1c771880c08f533f849421d152e2c78c29fb9. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:21Z), 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/DEBL61106299.
Weniger Stress durch Progressive Muskelentspannung II (Weiterentwicklungen der Relaxation nach Jacobson)
Stressfrei schlafen! (Einfache Anleitungen zum Entspannen, Einschlafen und Träumen)
Weniger Stress durch Progressive Muskelentspannung (Mit Entspannungsmusik zur Stressbewältigung)
Autogenic Training, Progressive Muscle Relaxation & Mindfulness Meditation (Get to Know the Best Relaxation Exercises!)
Progressive Muscle Relaxation (Easy Stress Reduction)
Weniger Stress durch Meditation (Übungen für mehr innere Ruhe, Gelassenheit und Selbstbewußtsein im Leben)
Autogenes Training (Anleitung zur Tiefenentspannung)
Autogenes Training (Sonderausgabe ohne Musik)
Progressive Muskelentspannung nach E. Jacobson (Anleitung ohne Musik)