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 0x04e5ccfa455fd2287b0d4617f850c0c7ec8ebec4d1c0deea9d121fca9c7939ec. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b0d00f6-9a4e-4b74-b5a8-297ba45b502e.json and https://artists.proofprofile.net/proofs/artist/2b0d00f6-9a4e-4b74-b5a8-297ba45b502e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Música para Animales, Vol.2: Canciones Suaves para Asegurar la Tranquilidad de las Mascotas
Gatitos Lindos, Vol.2: Canciones Increíbles para Relajar Gatos Domésticos
Felicidad Purrfecta: Música Relajante para Mascotas Contentas y Relajadas
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 0xb9fdbb5c4e3f01863c7c15aa77d90c8c22c5b43d6afcf8b194173b69c5624f76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITLU52191539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c19e0e408098da671bc01f74764a74117338c25e50ffa813f26e5e994066e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ITLU52191549.
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
Música para Animales: Una Atmósfera Tranquila para Mascotas Felices
Gatitos Lindos: Frecuencias Especiales para el Bienestar del Gato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1f8cb5e76212daaa77523128b6228e10b3889eb56ea94ac73489216c2788f. 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/ITLU52136925.
Canciones para Atraer Gatos - Música Relajante para Gato, Relajar Gatitos Bebés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccd5b05b19b6f669d1d00d727423172fd73885f3fed104cde4289667b92bcae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITLU51825990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb6852947c898b02adfbd57fbf1d8052044a49c596d1552eb1c3ad90520323. 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/ITLU51825992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf159d89ca1f72592d99bd80860d58920b2ba9a057aceff81c7f68f5df45cdec4. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ITLU51825979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee847bb76922785c07cfaae09c7fe394d6ffb8b5ec31bc862b219eb5a07df771. 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/ITLU51825980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268273c169088ea9f0978f66f0a285f32231b64c5988b3a75d6631e787db49a7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITLU51825981.