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 0xd2678cd36e3edb4c480daa632298d9a5506f47c1802673d0119db2d11545a53a. 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/b8a5d3fc-7a70-4b64-add3-0f88275642c2.json and https://artists.proofprofile.net/proofs/artist/b8a5d3fc-7a70-4b64-add3-0f88275642c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe292ea003b0069447fc21c3c974405319cf4aee6bff7a1f1eafb988bd33641b9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PL44J2330069.
Spring-Colored Office Music to Color a New Life
Summer Shine and the Melody of Cafe Bossa
海辺のカフェでのんびり聴く夏ボッサ
のんびり夏のビーチと癒しのボッサ
Refreshing Jazz Bossa to Listen to in Summer
Luxurious Jazz for Adult's Christmas Dinner Time
Enjoying a Meal While Listening to Jazz on Winter Nights
Jazz To Listen To Quietly While Enjoying The Night View
Winter Night with Jazz, Wine, and Delicious Dishes
冬のウォーキングとジャズの旋律
冬の夜に温かい雰囲気に包まれるジャズ
極上のジャズBGMでリラックスタイム
Jazz BGM To Enjoy The Atmosphere At Night
BGM To Enjoy A Relaxing Time With Drinks And Jazz At Night
まったり読書をしたいときのジャズBGM
Jazz BGM For Enjoying Evening Drinks And Chatting
Reading Jazz Enjoyed with the Rhythm of Raindrops