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 0xb77ea0f6ae932bf6647e0598777d97b7c24234fad898e16568a7db48cf8e1f32. 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/7bcb650b-bbea-4095-affa-fadfcfef77c9.json and https://artists.proofprofile.net/proofs/artist/7bcb650b-bbea-4095-affa-fadfcfef77c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rainy Day Cafe Jazz: Relaxing Piano Melodies for a Quiet Moment
The Ultimate Dinner BGM: Jazz Classics on Piano
Stylish Cafe Jazz Piano: Beloved Jazz Classics
Afternoon Cafe Jazz Piano: Classic Standards
Moanin' - Afternoon Classic Cafe Piano ver.
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 0xa51ac65120a226eb1513c7919bb542e8d9fafb80f61c668db148d221238da46e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPN292501722.
Melodies for Waking Up: BGM to Start Your Day
Study Jazz to Enhance Focus with Alpha Waves
Night Jazz Piano for a Soul-Fulfilling Healing Time
Focus & Relaxation - The Ultimate Work BGM
Sophisticated Night Jazz Feeling the Urban Vibe
Starlight Jazz - Gazing at the Starry Sky
Enjoying Drinks and Jazz at Home - Reward Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b5c6d9d68c0f7495bd02c3d59dfb534c8006bea64ef20c6e465282d458ebf. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPN292409377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660f3fc2a1448bdf104884043e7808dbcf18e2f21ff20f00cb936e0d367c4060. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPN292409379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9d47228068eb76f64207736ceec1bc78ff2b12e1cd263e852177f09c1b7647. 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/JPN292409383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573d0e57370f7a85bab45e95724538a2b6674298cfd06a278d28b5c2e3e360fd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPN292409385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9344f431f2f8d301addeed34455b09957b3f4a564ab891088dd2ce3586af045d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPN292409387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbbd5a039237b36e865936032e6eecbbeaa38c8c2490d1bb84130c1c1481ffe. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPN292409389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac132e49feeba53276856f578b93702843e47906941c143bc130456d66c8214. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPN292409391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa377d19d2421df98372f10d7711a49a75836010b3d65b3aa3ad2adf9de032b94. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/JPN292409393.
Jazz Piano in a Luxury Hotel Worth Staying In
Stylish Jazz with Carefully Brewed Coffee
Cherished Moments with a Loved One, Accompanied by Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12950e64edbc49f05d6a266c6fd11a699919766ba7968901de88e99b868e4fc3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPN292403887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e181a420da47614d055c47815bb724673d637e4ebfe318dfae861976aaeb79. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPN292403889.
Coffee and Jazz in an Old-Fashioned Café
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73dc7c8027c87dfc2c425f36a31e13c27fada3bc5c82cd64f1be2ecaffc5fbf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPN292396415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621e33d158f2a67627be6d7e38905d217e084cc70fff369b183a5c2c36b2acf. 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/JPN292396417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940bc9b0c08397e9138a822ba989a805dfa4a41670beb7102c9c8b62b94c358a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPN292396419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ce9695ee7b17f7c96be287610eaa95b6a4eb19d2cf187f9e802acc0afdaf3c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPN292396421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9a0aad4b1cd0f1e3a3a4bc102301fde4a1c860e156aa9537e15aea030040b7. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/JPN292396423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21d6cd6a5ff3fcda262b790f34c0245336d926c11d79e88d50364e21c1df3b6. 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/JPN292396425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5848d3457c7f3c0a7e9e4794a29b2e24f9ac3ce633c1ecdcce01e37f6ac8ad. 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/JPN292396429.
The Best Jazz in the Best Place, Even in Cold Weather
Morning Delight Piano - For a Cheerful Morning
Exquisite Cafe Jazz for Treating Yourself