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 0xd7db99d9ef11bd6190a24b4cf81d4551f55db5752682851ebc138a4686502617. 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/06c04b3a-d7f8-4aad-a6dd-0115a3bf4039.json and https://artists.proofprofile.net/proofs/artist/06c04b3a-d7f8-4aad-a6dd-0115a3bf4039.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 0xe1063284cde5f18591324d9fceedcd3c2a40007d50337b8c12945d03bde671f7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ARG991026072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596e949f4d60f1263e6f67b68337ea2545b4ee1651c1913f930e4a73a73e8607. 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/ARG991026078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90da9aeadc667bdaf2d8e9283623f6aa66c1ce68773503b66a6b1d245316eb2a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ARG991026079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18634d7122032cfc363560ebfcb91e5941335cd8e50e65c73ffc30b5797b10. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ARG991031743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f7b7de934e2504392456c140f483d9df4019ffcf426842df6c46a026be780a. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ARG991031736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cabfd331fd0f5bb0fd1226a0141335211138367738fd12fa6c4dde39ae3e423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARG991031746.
Voy a Comerte el Corazón a Besos / Mamá Mamá / Noche Amiga Mía / No Saber de Tí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865306c80a861b33512ccad3b452b872429b1184042c57ef4e40ae0dcac28d81. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARG991031739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bff0528d716a59116016a88ec07e857a548a70721ec65b1655ec8f980da84d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARG991031744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471837ec4e8ef4aa2c8cacd0375dceeb327f967ad8477cefb4ce8bec6dc2da2f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARG991031938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf338cd4ab53a473ace03cc2096a617eb0f13e4da6456645749033c377d36d672. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991031747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ed3e62ca91a7917a846ed1449edf8f4c8acaf0fa39f6381112de99a4ecf598. 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/ARHXW2004277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbce782322a9b18cc36162f59e4b538a46c8cd65a9f64e7c9ede58af05357fa. 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/ARG991031749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14a6ff98f77c92b70a22e5b08719aecd4096e7415ac5b2d8b47ca3ef43e2d32. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ARG991031745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67068c759a3985e2bd8ce78a582cfd9c840be526dfa4dd1b5f7f6cec094256f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARG991031752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad5a7bf7b6ea1b93e8d708d91c977b831d58ab29c4fdd40c23168f3f35dc4de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991017058.