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 0xff8ab4f834cf9fbbde945addb4676b6c48a855db43b536f6feea35c73ef44ff1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53d832ef-64d4-46a9-aa92-34f466444a1a.json and https://artists.proofprofile.net/proofs/artist/53d832ef-64d4-46a9-aa92-34f466444a1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sit Back, Relax & Chillout - Relaxing Lo-Fi Hip Hop Compilation
Lo-Fi Hip Hop Compilation - Relaxing Beats
Lofi Hip-Hop Girl (JazzHop & ChillHop Beats)
Super Chilled Lofi Beats | Lofi Laid-Back, Study Music
Rap Beats Collection (Assorted Rap Instruments)
Slow steps (Beats Hip Hop, Rap Instrumentals)
Passion For Rap - Instrumental Rap, Hip Hop Beats
Electronic Beats (Instrumentals Hip Hop)
Lofi HipHop Beats Mixtape (ChillHop Music)
Hard Rap Beats 2021 - Rap Beats Freestyle Instrumental
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 0x74d87f6955d4c43085052627f021ea00bcda6d49da71788bd3be02ad17b578e6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:09Z), 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/QZP7F2130367.
Lofi Chill Study Beats (To Sleep To Study)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd11213e8983d1fde97fc9212c7e084eb70061b916e9b244a718ded8e651138. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZP7F2143619.
The Tranquility and Happiness That We All Seek
Chilling Relaxation: Restful Lofi Bedtime Beats
Lofi Harmony: Smooth Sounds for Peaceful Pet Moments
Spa Harmony: Soothing Lofi Music for Wellness
Lofi Dog Dreams: Chill Music for Peaceful Pups
Pet Escapes: Tranquil Vibes with Chill Music and Lofi Tunes
Lofi Focus Haven: Reflective Tunes for Clear Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cbdc4a0aef94395fffa726c25b4078fae7f66628eb7fcd18eab0c30ac1fe6e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZYFZ2397030.
Cozy Catnap Grooves: Lofi Paws and Whiskers
Lofi Workspace Zen: Enhancing Work Efficiency
Calm Yoga Moments: Lofi Ambience for Mindful Asanas
リラクゼーションのための夏のビート
Enchanting Collection of 60 Playful Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfa4d4a7dc797f3180d7aa44b9b112fda038f05d2df59a7103b42ccacfb9cf2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTV32438784.
Croissant croustillant avec le Lofi nocturne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30045576946123533cc06769b97fc8fc0c4aae9b8708a5196bf543a1ac2c77b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM3DF2406238.
Shadow Walkers (Chill Freestyle Rap Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3ef1a0619fd4823cfaf6b37e84b3fbcfdbebda0b528169484d00540951eeb0. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZTV32441156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ce5dd8a6c6940b5cafb0ad8416afb6dd6260ae1d21f328c0ea770e5a70b8d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTV32441171.
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 0xf2f82fbda58cc4c44759790d7d4678336ed1356b3acb28e2eefb86cd5daf1d5f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZTV32441227.