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 0xaf107cfc8541449345035dad9ed6af08adb8f5499cee147609ef3a24e7f10888. 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/937f285f-2b2c-4d0e-b10d-7c21e536fe37.json and https://artists.proofprofile.net/proofs/artist/937f285f-2b2c-4d0e-b10d-7c21e536fe37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurrí: El Parrandero / Chaparra De Ojos Negros
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 0xf7b7bd7ec915a3f9191508ad10decae226e95e1271bee1b4cc5f91cc29fae29e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXD481811606.
Popurrí De Rancheritas: 30 Cartas / Ojitos Negros / Florita Del Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a7f0d860c0df4f1f3774651f18fed059c4ed5376f1853070fce26c4afc68b6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MXD481811614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6314986de2e56f12938f5a7a005f4ec49cd6da5058452a85d4b86d9aff1b264. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/MXD481812045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1383cfc150fb4fe9e99c9cea5568196ca9025a988eb4b0f1b36cb89c26943e54. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1520571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e157b3353ef06ae763396a7a70e75375ceca82f5eb7be5069a80495d75dc713. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1520572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d37ff638e3a860c067e4aac18fa03c18c08608d6c03f461cccef8ae9528b47. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QM6DC1520574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad334faaec355a14c04e5a7f75efa0fd4bae908a060dd830f78fada1f879de03. 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/QM6DC1520582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc331eb0feaf9e3d51b0bd30a67f3edb396bb85245c5f651af0c67710e35031a. 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/MXD481809853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623386df19e0b8e9bc042ad794d72f6e1e725c28a4fbd25f59b1cd7137d3f6f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/MXD481809862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2810d599e9c8b9fa7037189f28c7ac970571f12a051d39f5b3b76c0aaf3532. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MXD481809867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce804d044d4746ab296767a843c9699be4756b208d916689787eeaa63944cc2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US3DF1425323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a837d63dc0ad24901a1a20510ef959b09ee1787aa106ddaba5150db927397fe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF1425328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029730a506307bd923ac49b094ef0289ed03a86cd5b679c280593b67bf662760. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/MXD481809124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6e141641d4cc53e6643519b187b2e97a56ff93d8403bdf0b03d834e8ec2e8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USDY41664259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23901435f14faadb311a151b9185ace45e1b9f84e372fe5b32f8e45c3fda69e2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/MXD481807296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667d80087c3a7fd5b8a4f9e6cb2ff7ad478bccb1d515171ce2da82f6a178da9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/MXD481807276.