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 0x7c734fe0198e763bf36b690280cba25de34dd0d8e3c0216ba709fa73f458ba1a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffcba2f0-f42d-454c-985a-dc58eb9e2921.json and https://artists.proofprofile.net/proofs/artist/ffcba2f0-f42d-454c-985a-dc58eb9e2921.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Solo Piano Lullabies - Calm Music for Deep Meditation and Restful
Brazil Cafe Club: Latino Lover, Jazz Latino Dance, Latin Macchiato Coffee, Santa Maria Vibes, Costa Rican Jazz
Californian Sun: Love Sentimental Jazz from San Francisco, Morning Bossa, Smooth Jazz City Lights
Seaside Cafe: Sunny Sundays by the Ocean, Summer Jazz Relax, Long Evening, Cozy Breeze, Cold Wine, Hot Sand, Morning Picnic by the Ocean & Late Cocktail, Relaxing Summer Jazz Vibes 2023
Those Beautiful Days: Summer Bossa Nova Jazz, Relaxing Jazz for Vacation Ambience
The Midnight Hour: Instrumental Jazz for Deep Relaxation, Jazz Night Lounge, Bar Background Songs
Bebop Coffeehouse Jazz: Brighten Your Day with Good Mood Vibes
Bistro Ballads: Cafe Lounge Smooth Jazz Music, Cozy Coffee Shop Ambience
Doing Nothing: Smooth Relaxing Bossa Nova
Sexy Night Jazz: Bedroom Vibes & Music for Sex
Late Night Sophistication of Smooth Bass and Piano
Music to Study: Classical Music Instrumental Covers
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 0xab8c21fcc266fb5e7a977c6b3848d0f822a0fff6818f20f4fb512b7b455a2837. 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/PLS921748919.