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 0x71fdbba3eb1287a1e3acefa9885eb1a8b8ca0ce38bc3a9c61af05b63979b6f2d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aec4ecb-96e9-43c7-b7d1-8811c40c6c7e.json and https://artists.proofprofile.net/proofs/artist/4aec4ecb-96e9-43c7-b7d1-8811c40c6c7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Luna de Octubre (Remaster from the Original Azteca Tapes)
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 0x4b494aac87f126ac1ca8c857f1457c85351b0fa1f7e45f4845cb1c859112f0a2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MXF160204767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a690fc3062c6f7bdb355c17ca116d968711844383c9bb8f2aff2ae94e8002. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MXF160205721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5f0987e4ef9c621be61d667d1ee23c446617ccbf579acd0d2ee41d78b0c1c5. 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/MXF160205576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88cc506aac7fdd672b98d4bf93abff026b2b54bc27f3633d859506ad3e72d76. 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/MXF160204769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed040caebdbc00e25659fb08d90ebe9371a07dbd3cd18b187fef3e54f7c3b58. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF160205726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecc0447b3e4a40ae0576f76427b5726afe1b9d8cc0765843d6564f3744db61. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:24:46Z), 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/MXF160205730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd180327ba3d0bdba5495f77ca08ba6dd7000166a74da1cafc9caa7e27c8395b0. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/MXF160102741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69429e262237ea658726e2fa869ad90caa5c0e6ba7d608e807532084887b3184. 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/MXF160204202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc473a9e7a608470c71247e5798ac3ddb5a7823d2a819e07d58ba79c28aa3dce0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:06Z), 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/MXF160205735.
Peerless 80 Aniversario - 24 Boleros Rancheros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ae0002284db8dcc6438d2cae400ff0e3aaa20b0daa24c2b2789b1fa4a239a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/MXF160204198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fdd3b05dedefa0d4d67327d0f17161af919f5f4bc9ed60248a4e263aa30f2d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:46:02Z), 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/MXF160301694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39d9aa3c2ec3d201d74668f01d06681c2fc1464726f735ae2d781d840068ef4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/MXF160800251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d975b601ac930800a63e446c54f2db36a927adeb07512935c02151bdeb507. 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/MXF160206996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5f0987e4ef9c621be61d667d1ee23c446617ccbf579acd0d2ee41d78b0c1c5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXF160205576.