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 0xe415477cc08f963bbab9cddd602f04d8d87d132220112c2cae2a8bb26db14a45. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f6fcfd8-e69a-4609-a665-1a78590fc9f5.json and https://artists.proofprofile.net/proofs/artist/8f6fcfd8-e69a-4609-a665-1a78590fc9f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Music for Staying Productive - Guitar
Trio Jazz - Background Music for Lazy Days
Music for March Moments - Trumpet, Alto Sax and Tenor Sax
Trio Jazz - Background Music for Recharging Moods
Bebop - Background for Searching for Creativity
Sultry Music for Hotel Stays - Trumpet and Alto Sax
Music for Recharging Weekends - Trumpet and Alto Sax
Hot Background Music for Cocktail Nights
Superlative Music for Recharging Weekends - Trumpet and Alto Sax
Incredible Guitar Trio - Ambiance for llustrious Shapes
Serene Background Music for Studying Legends
仕事中もジャズで気分を上げよう
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 0x94e2e5cd05920d14eab64d34c262678a3249c9c5cad517d6e254031c04917dae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZV8N6976565.
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Classic Jazz Sounds: Timeless Music Collection