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 0x09fbf8cb7a5f8b614d4495020fd86df42a628de809dffc7ab529fe5ff8531ec6. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2efaa32f-7614-4498-b34b-91375844a9de.json and https://artists.proofprofile.net/proofs/artist/2efaa32f-7614-4498-b34b-91375844a9de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Instrumental Jazz - Music for Cafe, Restaurant, Work, Good Mood
Study, Work, Relax - Jazz Collection 2023
Jazz and the Rainy Rooftops: Soothing Sounds for Sleep
Rainy Jazz Escape: Calming Sounds for Stress-Free Sleep
Jazz and the Rainclouds: Calming Tunes for Sweet Dreams
Rainy Jazz Nightcap: Smooth Melodies for a Good Night's Rest
Jazz Rain Serenade: Soothing Melodies for Deep Sleep
Waiting Room 432 Hz Jazz Music Instrumental for Customer
432 Hz Instrumental Jazz Mood, Emotional & Calm
Afternoon Jazz Break: Teatime Melodies for Midday Relaxation
Venetian Jazz Nights: Gondolas, Canals, and Intimate Lounge Vibes
Midnight Jazz in Berlin: Urban Vibes, Intimate Clubs, and Smooth Sounds
Jazz Infused Weekends: Friday Night to Sunday Morning, Continuous Lounge Vibes
Midsummer Jazz Dreams: Night Skies, Shooting Stars, and Ambient Tunes
Rainforest Jazz Lounge: Tropical Rhythms, Exotic Instrumentals, and Pure Bliss
Manhattan Jazz Dreams: Skylines, Bright Lights, and Smooth Sax Vibes
Jazz Under the Stars: Ambient Night Melodies, Moonlit Sax Serenades, Celestial Harmonies
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 0x0129cc76878c5e7a5ee7f23de3f461672b61523ce2bd80277d7076302b70a333. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PL8D72462236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb8f2af30db1739289e6cbe1ea5b33ab9c4dfdfd76624a23a63d2b7a251ec2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PL8D72462234.
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