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 0x1a056d7b43ba7ab5465aa75e9d082dfcef1ed0140ecb60909906c3701d997a10. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26c41de4-b3c0-4bb5-8443-2789b1d9ed90.json and https://artists.proofprofile.net/proofs/artist/26c41de4-b3c0-4bb5-8443-2789b1d9ed90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soothing Keys of Serenity: Piano's Relaxing Spell
Piano Study Odyssey: Harmonic Path to Knowledge
Babymoon Bliss: Ambient Soundscapes for Infants
Piano's Academic Muse: Melodies for Focused Study
Harmonious Keys: Meditative Piano Journeys
Piano's Calming Harmony: Serene Spa Reflections
Ethereal Relaxations: Rain-Kissed Piano Notes
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 0x0503e5675dba3e746dbf0f0285938c9db6c91ecf8eb1b556466c2efe67a7b35f. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USLZJ2409076.
Baby Sleep Piano: Gentle Tunes for Slumber
Classical Meets Contemporary: Piano Fusion
Piano Music: Radiant Elegance Reflections
Gentle Piano Melodies for Peaceful Quiet Moments
Mindful Measures: Piano and Concentration
Soothing Piano Classics for Sleeping Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba02ba53d2fe45bfa5b3bf763ce2722a2ce0d3e57940f8cbbaf10d9ab6f899. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZWDE2371373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffb4d202492f14b013d3a021989cdb64a59a6d97d9c0c2cbfe5565e50d4e14e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZWDE2371379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce65ac82d88ca9f4cbf33a0c4b26bd3d89b0265617cd3271530abb1594d28f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDE2371389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b1f1e84e7fea1fe68cdbf9ac98fe09f8c2d891a161912993adc72ac6a6feaa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDE2371399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59e9f4155dd68cf1a48f91bb48c8683288c35ba72da1ee7b0d5fa63c2b7a7bf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZWDE2371410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad905e0bc692e9baea34e2baa951893f62eb059b9a6b0fc67b2e06d96fc56f3a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZWDE2371419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa355d35efa28b1cf08d8a4023878b24b1d6be806d2b93b663329b1380e2f95e9. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZWDE2371429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7f8b87f7285b954b1f944a55cc781beb4dfe67d793f9f950ca59d7467b7aa1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDE2371440.