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 0xfdc794bb1e6cad47885a3f11378e4d2736cf69297e64b0a9c449a4d9752c9ddf. 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/e42f97f9-e212-4270-a847-2590a93da254.json and https://artists.proofprofile.net/proofs/artist/e42f97f9-e212-4270-a847-2590a93da254.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8025b21cb6e65cedafe9310635f45ad8e9b4165a801a81263bca579670be675c. 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/MXF010400296.
Grandes Éxitos Remezclados y Masterizados
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649af0954e325dc27725b63c837665962c15f7412238249eeefd7d22d5f192f4. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/MXF010500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba7c626ccb6f7d2a2097dc0c1cc0433ea67c237b156ce950d69be58f1b08a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF010500195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b933e608766966fa0747ba8adbd0c4d4aac586329d245affc95989159bbe1e. 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/MXF010500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c9e8dbbdcde222d32406386a0edb8061141157097162c216e32dc428f69dde. 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/MXF010500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8053af39cdc4a0542827a31a0242891c2123328c2f07a4324d8fc0d71d3f7a63. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXF010500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc9b9cdc3dca86e9314291e667f318bc42da02fbe51ec7ed8a61666448d806b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF010500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17eee2563ba8aebf3a254503a739430bf1f684bb380cd6f5dd37e7176617358. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MXF010600486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8e9d0b6e839363f8e10134df956e2005b4092ce8a995ef5ebbe4c9fb2e52a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXF010600488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d21d4541c98c77a6216ff09f16d5682338eb4336be469ff4f3700d6c0b9d78. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/MXF010600489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c1b2e2df627fe475b35dec792120a08a591ad0ba08d96e758c58ccbbe29e22. 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/MXF010600490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8925818fa7ab8d2e912c3012df1d3eabcdc02a89251ffd3da467a0229da070. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF010600491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc354bdd226e66fb55111970b76b57613747c937b1c41d348289e89a40bc35dbb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF010600493.
21 Black Jack (Nueva Edición Remasterizada)
Homenaje a Choche - Amigo Bronco - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e92d3f1b573e560a1d288bfad09cb34694e450f4d6b1138ce9a58885f1694. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QMDA61457894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4f4b420f38bf248dec5ca06df42f5d738fcc4f3ff57e93448e374f27c492b7. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QM6MZ1415265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6e0b0bd73b45584c992b07868135dbbbdff6e5f5b9eef94027dc154b4a135. 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/QM6MZ1415273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8a53cb0baab8a7fa75e983ccebdc1e2c779edb8a12a1018bb6609e9f5edef. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6MZ1415276.
Popurrí Voy a Tumbar la Casita / Mal Amor / Un Golpe Más / Atrapado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f4fd267f529c759b55611e0dcccb0b605a37a9459ca97558d9d90d9afffd14. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM6MZ1415277.