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 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 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 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 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/ES5120200634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef49af159cb22b86791b01b353ea3e89b1bed438b2c68dbe156711d28fc682b. 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/ES5120900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63abca6b8a2d8d68f00f80719635354d422b9abb9cb2834f6497dca0b9f90c. 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/ES5120100480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413b4e9a1578864362f30ff7a1a7bf1c8ec77ae69ab2715282b695ad868eb31. 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/ES5120900345.
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 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 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/ES5159837006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19120392ed9cd113fa964c33e2541a039e794f77356abc2a9d5bf17f12769c9. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/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 958742 (2026-07-19T14:09:34Z), 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.
Únicos en Concierto. La Barbería del Sur (En Directo)
Nuevos Medios Colección: La Barbería del Sur
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.