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 0x2240bcb8fa20ed9dbfe477a269fe0db90ccbd30c930c8b1fec85e97f3c180736. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bca31109-509c-473b-9d4e-4762f1c5748a.json and https://artists.proofprofile.net/proofs/artist/bca31109-509c-473b-9d4e-4762f1c5748a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Business Lounge Jazz: Working in Office & Easy Listening Music
Ending Your Week & Bossa Nova Friday Jazz
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 0xfa5ccbeea30e4589f3e81a8338a1bd22b6eee2bbd4e6ad3e5359212f7bbfd463. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/UKR4Q1925182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450d88bae75c9250297805b7a30872f5b4f6bb05c5a1469177e0d401efc84511. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKR4Q1925191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486a5bb1bcc8b7be301ff4e761abe401fd6dc131aa77a494ceb6c3b16f6547b3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/UKR4Q1925195.
Tokyo Cafe Jazz: Beautiful Relaxing Piano Jazz
Venetian Summer Evening: Romantic Café Jazz
Smooth Jazz Music with Crackling Fireplace: Relaxing and Chill Music
Guitar Mood Jazz: Background Music & Chill Music for Relaxation
Smooth Sexy Saxophone Jazz: Erotic Lounge Mood
Perfect Day With You: Instrumental Jazz, Going On a Trip, Sax Jazz
Jazz Retro Café Mix: Feel The Vintage Jazz Music
Bottled Romance: Latin Cafe Lounge Music for Cocktails & Drinks, Best Instrumental Lounge for Wine Tasting
Bossa Guitar Jazz for Winter: Guitar Jazz Bar, Classical Guitar, Electric Guitar Brunch, Acoustic Guitar
Bossa Nova Brazilian Cuisine Restaurant & Bakery, Delicious Carnival Menu
Soul Bossa Nova: Flute's Brazilian Grooves, Elegance of Latin Lounge
Romance in the Air: Slow Bossa Nova, Relaxing Instrumental Jazz Music for Romantic Moments, Work and Study
Sun-Kissed Bossa: Relaxing Summer Bossa Nova Jazz for a Chill Day, Elegant Latin Cafe Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018042d1e8fe6a4308339a9d221dbe282b7194cf23856b2437fda0dca4460b6a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/PL2E32415571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22e599d160b28e79394e44d02d4f11fb7f94fb612fa41e86394b7f29df4cbf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PL2E32415573.
Touch of French Elegance: Perfect Smooth Jazz Music
Autumn Porch Vibes: Instrumental Background Jazz Music for Good Mood
NYC Luxury Bedroom: Elegant Evening Jazz Music
Parisian Vibes of Good Jazz: Smooth Background Music
Cozy Winter Porch Ambience: Relaxing Jazz Instrumental Music
Café Noir: Relaxing Jazz Tunes (Piano Bar Edition)
Valentine Jazz: Romantic Smooth Melodies for a Cozy Evening
Cocktail Club Jazz: Night Vibes, Elegant Bar & Restaurant, Rooftop Lounge & Mellow Music
Aspen Street: Cozy Winter Background Jazz Music
Italian Cafe Vibes: Smooth Jazz for Morning Productivity & Inspiration