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 0xcaf1a1bbfee322ded046a6db92e82c759ac5645bb647a68922cea2a31054fe70. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c15b310e-e4ca-47a4-89e3-a6313b1f655f.json and https://artists.proofprofile.net/proofs/artist/c15b310e-e4ca-47a4-89e3-a6313b1f655f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natal no Brasil - Canções de Natal Relaxantes
Ho! Ho! Ho! Feliz Natal 2018 – Música de Natal para Crianças e Adultos, Coleção de Cantos Natalinos
¡Llegó la Navidad!: 15 Canciones con Hermosa Música de Piano Relajante para las Fiestas Navideñas
Musicas de Natal para Piano: Músicas Natalinas Instrumentais
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 0x0f3d2e1a2062ae95dbdec6f764ad02f3160ac0dee17b401cc1ae83eb3ba7aec6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITO102052137.
Navidad para Mascotas: Música Navideña Relajante para Aliviar la Ansiedad en Perros y Gatos
Musica de Navidad Super Relajante para Dormir Bebes, Villancicos 2022
Tradiciones Navideñas: Música Instrumental Suave para Hacer el Árbol de Navidad y Crear Atmósfera Mágica
Natal Brasileiro: Ritmos Natalinos Bossa para Uma Celebração Inesquecível
Canções de Natal para Bebes: Melodias Calmas para uma Noite Tranquila, Músicas para Adormecer na Véspera de Natal