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 0x8e6a833e2301ccb48dd5855596122f92646e324e7d06a7aa0d5d6c27ee2567eb. 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/31c5cbdc-d2d2-44ca-97e4-039a69ea62aa.json and https://artists.proofprofile.net/proofs/artist/31c5cbdc-d2d2-44ca-97e4-039a69ea62aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Cup Of Bossa Nova: Acoustic Background For A Coffee Shop (Relaxed And Warm Ambience)
Italian Café Ambience: Smooth Bossa Nova For A Warm And Inviting Atmosphere
Café Dolce Venezia - Smooth And Relaxing Bossa Nova Vibes For A Cozy Venice Café Ambience
Morning In Paris: Jazz Café Ambience, Cozy Coffee Shop Music, Relaxing French Jazz
Old School Jazz - Bebop/Swing | Jazz Café Classics For Music Lovers
Morning Coffee Jazz: Relaxing Background & Lounge Music | Soft & Smooth Jazz, Positive Mood
Old School Jazz – Bebop Jazz Music, Swing Grooves, Instrumental Background For Bars & Cafés
Autumn Soft Jazz: Fall Jazz Music, Relaxing Melodies To Study, Work, Chill | Coffee Shop Ambience
Countryside Coffee Shop: Smooth Jazz Music For A Quiet & Relaxing Atmosphere With Nature Sounds
Happy Autumn Morning Music: Smooth Jazz In A Coffee Shop, Relaxing & Cozy Ambience | Autumn/Fall Vibes
Cozy Fall Coffee Shop Ambience: Smooth Jazz Instrumental Music ~ Relaxing Background to Study, Work, Chill
Waking Up In Paris: Sweet And Romantic Acoustic Music | Instrumental Jazz
Chill Out Cafe Jazz: Soul, Ballads Jazz Café BGM
Smooth Unwinding: Calm Jazzy Dreamland for Coffee
Coffee Shop Piano Radio: Melodies for Mornings and Moments
Dixie Café - Flowing Jazzy Chill Lounge Music
Coffeeness: Instrumental Jazz Music for Drinking Coffee and Chill
Brewing Emotions: Relaxing Coffee Time with Jazz Music
Soulful Brew: Cozy Coffee Shop Jazz Vibes
My Coffee Shop BGM: Jazz Lounge Chillout
Coffee Aroma: Energize Your Day with Aromatic Awakening
Brunchtime Jazz Cafe - A Rich Blend of Instrumental Jazz for Your Coffee Break
Bossa Nova Mornings – Smooth Jazz to Savor with Your Coffee
Brewed Beats (Jazz Notes & Coffee Aroma)
September Bossa Nova Mood: Autumn Vibes, Coffee Aromas, and Warm Melodies
Café Ballads: Smooth Jazz for Cozy Coffeehouse, Restaurant and Relaxed Bistro Ambience
Caribbean Coffee: Smooth Bossa Nova Jazz, Cafe Ambience for Work and Relaxation
Cozy Jazz Ballads: Autumn Mood and Melancholy with a Collection of Various Jazz Instruments
Golden Arabica Vibes: Smooth Coffeehouse Jazz
Chill Jazz: Soft Tunes for Calming Evenings
Hospitality Hues: Soft Jazz, Strong Impressions, Smooth Jazz for Sophisticated Spaces
Cocktail in Monaco: Smooth Perfect Background Jazz Music
Coffee Shop Whispers: The Great Indoors Smooth Jazz Background Music
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 0x0c798599ecb16a715e05a8261e7d63f0a78de973ac18091684a2942cb7fc12de. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/IEWWH2456457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16353273da8c69de407a8c5bf96b043e7aa42a32b01ff917988cac0ee7f6c0e0. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/IEWWH2456460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004372d78dae788616707e1d72dbabdb8183aaf1622e3ea8cada5c298c44175a. 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/IEWWH2456463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8ed90715aeb234195c5baa19c41a2001d969dc3501bd259004fa0723baca67. 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/IEWWH2456466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fefbc572cf6764cf3d37a49d67ee7808755df120f8f53396418bff68e99681d. 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/IEWWH2456469.