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 0x76dab0388f11b8a7003c002d1ea5c081714dc424217918269866ba4f63c6a094. 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/93dde46e-7481-4112-af94-d2247c485290.json and https://artists.proofprofile.net/proofs/artist/93dde46e-7481-4112-af94-d2247c485290.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ac26168d02dc504008ac907e9651af4a64c3cce5fad2b0b0af5c74e1273847. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5120900455.
Historias de Un Deseo (Remasterizado 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ccf04edff0e8532b5c6ddee2b6da143d79c4b824cef5c53c565c128e8a9d9d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5120200634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef49af159cb22b86791b01b353ea3e89b1bed438b2c68dbe156711d28fc682b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5120900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6434e6c53c7a3a8ebad3eeb8e4b86f9b5a658ee5db08d81a7d0f703b3fd5716. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5120900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63abca6b8a2d8d68f00f80719635354d422b9abb9cb2834f6497dca0b9f90c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5120100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413b4e9a1578864362f30ff7a1a7bf1c8ec77ae69ab2715282b695ad868eb31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5120900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8fdfbebe153e460f7a2bf72f54ec0ba7558763529c10fa5891427cc76a5dfd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5120200632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d15d3b178f03a3c0e10325a0fa6231e7c8e715e54ced09bdf994beb7d37d8c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5120900348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b3f0bdc56f073ff8a74335dea8f42bbd7fac3b428f759fd3b0bfb9ebd36f2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5120900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58272cba2cf16e7e69cf12a97f520e4349174b1c30b70524cf4a0a07a57bc65a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5129700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26971d6d33c074369af3db280b5e26415e9cbc34296d33dfd23c8b200344dc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5129700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d21ef0a32d60ded7d7f25d6f9040fd59cfe8412db34225db85536518b8e196f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5129700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0922984341f962f8b81304eeaabc82a35c84ad7741028fb5b3465e5ddd638b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5129700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fedd25859dd18b23487d62e3006c14b20985b2c30d4b8f7ccc49c5b5e5b7b40. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:00Z), 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/ES5159837003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c1212073e95c828850bfbbf77e433f80e951181bf02920e71b856cc781e7b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES5159837006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19120392ed9cd113fa964c33e2541a039e794f77356abc2a9d5bf17f12769c9. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ES5159837009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962448f9bae24eebbb96b14a77e539a4e50db42686e4ea0527b91f9bf97095a4. 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/ES5150037002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897e739d7adf79af768b6bf76d50f0fee6c7ea2402132a6354e85e9a6084d025. 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/ES5150037006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ef4bf6d4fda43efb04d8688ddef98bba86fe3011850f33f31d7445379fabd4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:19Z), 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/ES5150037011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f6074f5a0da7ac04984bab9a027fe42fef88eaaffcbd3443a162388e0cdd04. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:30:19Z), 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/ES5150237004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf701d4f42292aa2610994418c98d5d422564537ce5c0ed84fd4af13ce6cd6b7. 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/ES5159837002.
Únicos en Concierto. La Barbería del Sur (En Directo)
Nuevos Medios Colección: La Barbería del Sur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e8fffb26a3cd592ff1f86dfa5083ed250df869744d49021ede1b9119d3b6f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2115289.
Contigo aprendí (feat. La Barbería Del Sur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fcb0cf1e9c6326fee69d3093dd78da4af795e859781ab290832da6a278723f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5150052004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fcb0cf1e9c6326fee69d3093dd78da4af795e859781ab290832da6a278723f. 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/ES5150052004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf701d4f42292aa2610994418c98d5d422564537ce5c0ed84fd4af13ce6cd6b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5159837002.
Llevatela (with Moncho & La Barbería Del Sur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b212f5810e2731a3e948cdfb2c7f7d19286c0db39bc9efe3d8bc4371c82753d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5021200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b3f0bdc56f073ff8a74335dea8f42bbd7fac3b428f759fd3b0bfb9ebd36f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5120900350.