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 0xb3142dbea458d6e2858800f7518ba482d1717953f07337e9cde088bc04e86924. 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/bf9ce3b7-3ec1-4dd3-ac50-d5bfbff0484d.json and https://artists.proofprofile.net/proofs/artist/bf9ce3b7-3ec1-4dd3-ac50-d5bfbff0484d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hotel Spa - la Mejor Música Instrumental Relajante para el Spa en la Ciudad de Teruel
Sala d'Attesa: Musica Rilassante New Age di Sottofondo
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 0x827344193c835c079ccd78ba0d7d1c5c0efe851e505a63373adf67b11abdbc6c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ITO101793928.
Naptime - Sleep Music with Nature Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368b54b804fba990af74fd80aa1e9ad66d4256810c816a56f236148d460e2cee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ITO101799283.
Beat Insomnia: Relaxing Deep Sleep Music with Nature Sounds, Delta Waves, Tibetan Singin Bowls
Música para el Estrés: Canciones para Encontrar Paz y Serenidad, Meditación para la Ansiedad
Soothing my Soul Music to Soothe the Senses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d45251f24564ed749803ef5296aa1e37de06d4e9f333e77bea06cc70fdb5c2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ITLU52100536.
Sleepy Summer Music: Calming Acoustic Guitar and Soft Melodies for Hot Nights
Deja de Pensar: Música para Relajarse, Calmar la Mente, Combatir el Estrés y la Ansiedad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aceb86156e4cd85bdc4335ddccc83ed84a98d784abc301c2f5eee42a0dd595. 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/ITO101670067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978069e1a04522c8082ec4451eef2a95af1202b0d6e1899ebd05e9e6568f62a. 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/ITO101670068.
Música Relajante para Aliviar Migrañas, Cefaleas y el Dolor de Cabeza - Escucha nuestra Música New Age Antiestrés con los Ojos Cerrados y Respirando Profundamente para Calmar la Ansiedad con
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70974fbb21cacb0f1ea36d3ac1d6bdf194552cccef63d8ea20c4aa7a49021569. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITO101670069.
Musica para Dormir Anti-Stress - Música Calmante para Combatir el Insomnio y la Ansiedad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803fe93658874f8bf3bac6acb3236cf7ca5d11ca16090b1f0b3850fd802e9233. 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/ITO101670066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978069e1a04522c8082ec4451eef2a95af1202b0d6e1899ebd05e9e6568f62a. 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/ITO101670068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aceb86156e4cd85bdc4335ddccc83ed84a98d784abc301c2f5eee42a0dd595. 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/ITO101670067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70974fbb21cacb0f1ea36d3ac1d6bdf194552cccef63d8ea20c4aa7a49021569. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITO101670069.