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 0x8cea574f1a8d0aa3507b74a2ff58408483d5d90731f84b75110e68a62af88f6d. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52447bbf-c2ba-4e41-811f-9c5544c86ed8.json and https://artists.proofprofile.net/proofs/artist/52447bbf-c2ba-4e41-811f-9c5544c86ed8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tan De Repente (Original Motion Picture Soundtrack)
Mientras Tanto (Original Motion Picture Soundtrack)
Lengua Materna (Original Motion Picture Soundtrack)
Ruta Misteriosa (Original TV Series Soundtrack)
Biblionautas, la otra biblioteca (Original Documentary Soundtrack)
Chechereche (Original Motion Picture Soundtrack)
El Jugador (Original Motion Picture Soundtrack)
Margen De Error (Original Motion Picture Soundtrack)
Encuentro (Original TV Series Soundtrack)
En La Mira (Original Motion Picture Soundtrack)
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 0x9e01d3bfc9f76ce44f215c0aef51bca322435008bad9f354655f854146d3f621. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6MZ2222393.
El Refugio (Original Motion Picture Soundtrack)
La traición de Manuel Puig (Original TV Series Soundtrack)
Salvajes (Original Motion Picture Soundtrack)
En El Barro (Original TV Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a88bdc538b00d03e95e59a0e1137c1dc586c77802990aa2f3e7389b4fa7c4b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GXBDS2519957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdd7ee88dfd39a6dab19ca17fecac5d55b6672156067bf430a10955c399121. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GXBDS2558365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3fd5c40442ae584f46a8df696a54f2a71c5c83628a34dfbdf0398f89416f7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GXBDS2599828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4871c3d07edf89ee6d3281e863eb5f336ac2a11f63d6d4a426fecda083190201. 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/GXBDS2594059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7269e75804ef9b9eee50a9fd3636e3b77488c0baa75bc69dc33f11365f971ed5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GXBDS2578414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47977a0a41382d9d7ce2783647a8a23fbf931b3c8ca214bbd2232e9adb4df62. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXBDS2541286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bea68a259cabbae5a97cfca4582a385bc92d1d5c22f55a79867f1cbad2bf086. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/GXBDS2581670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec11496f73303be1c87f4d38b91b2eb5248f14f3ccc99e9e94d4c5ea00762ce. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GXBDS2593037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20a172c8f8dc1111e7aec1208ebf888a15bb5b569ed07e084db354bc69fa780. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GXBDS2522820.