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 0x7824c7c2ac114740f56c67191720dccba160b213828a7842ecd066ff1ebcbe87. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43c08b42-7c5d-486d-acb1-f3268c85288d.json and https://artists.proofprofile.net/proofs/artist/43c08b42-7c5d-486d-acb1-f3268c85288d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quartet Jazz - Ambiance for Weekend Parties
Thrilling Music for Stress Relieving - Jazz Guitar Solo
Music for Time for Summer - Jazz Guitar Solo
Awesome Music for Lounging with A Book - Jazz Quintet
Music for Breakfast Jazzing - Jazz Quintet
Backdrop for Balancing Move - Harmonica Solo
Music for Balancing Move (Harmonica Solo)
Magnificent Jazz Organ - Bgm for Sunny Sunday
Backdrop for Virtual Relaxation - Jazz Quintet
Terrific Ambiance for Virtual Relaxation
ストレスフリーな作業スペースに
Giggles and Gurgles: Happy Music for Babies
Spa Harmony: Relaxing Music for Oceanic Serenity
Abyssal Motets and Purring Cats: Music for Happy Pets
Study Harmony: Thunderous Music for Learning
Binaural Harmony: Sonic Ocean Meditation Symphony
Serene Baby Waters: Chill Tunes for Quiet Time
Ambient Reflections: Soft Sounds for Quiet Evenings
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 0xafcdc249f03356228acc60ed46cf687f50d71c82b0a7d909b1bb9e31cd7ca633. 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/QZZ8B2491262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7210f7002c2fb0858b05527e6c933de92673346d2b4aa7e4825eaa78b57100aa. 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/QZZ8B2491270.
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 0x7a8c3aa9af28f638bef9272782ac267f412012bda8ec86fe5a450bbb2706ae80. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZZ8B2491276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cbcee71e8fd2daa6e874d3724387fbaf64d43f041548d6aaf50bc538c22351. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZZ8B2491305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff76afd1772a77407b2f949d5e60fcd71bcd05fad7017dc44775006d38ee4524. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZZ8B2491331.
Workday Melodies: Music to Enhance Office Atmosphere
Music for Dogs’ Comfort: Canine Calmness
Healing Yoga Melodies for Emotional Release