Hugo Fattoruso (born 29 June 1943) is an Uruguayan musician, composer, arranger and multi-instrumentalist. He is considered a significant figure in contemporary Latin American music, with a career enc
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 0xea8d8129d820ed6bb36d4861b6bb112e508397e240988de05ee5c11571e9c40a. 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/d456be29-eef3-44d2-a99a-eb5e837b4d5b.json and https://artists.proofprofile.net/proofs/artist/d456be29-eef3-44d2-a99a-eb5e837b4d5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Blanco y Negro (Las Aventuras de Fattoruso & Rada)
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 0xa1300617d0654de7b019923efba9ff776ecd428d99277d7762a265a70c003c95. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMFME1521769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2d70f80681eac649a4bc2f68a0883677b2f539e7b3125c7c2ad68e35fb6e1. 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/QMFME1521772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9430607a766b4d00ab6a7d9ca50368e8719d4d53da77116ead77661acfff606. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ARA170900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef24bdbec276c8a6b7d78ae4873fac7ce26389f46db1521f16be3bb3832d83. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ARA170900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8c5cd2fe7b3320ab21404a53cb3d22e14366fbf05ccfeefd7b7aaae57b1a1b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ARA170900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db87e580a0aa29d8dd3ea61eb02a37fc0dc49d4ad31407b31453047014a0d4f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ARA170900087.
ウルティモ・ブルース・・・南米のピアノ・スタンダード!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84076db6cf8303310e667d225c3057f86e915c94e39e1a1e455538ac2b90fa19. 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/UYB141606908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae31383f292a0f33ab9d8c9492c4f63b2cd72adfb6595dda7c8fc82084c251. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/UYM121501464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa1e102d2f31190fc4a84dc41e75888902de12cbce8738b6480449d0a2b9cd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBDCR1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b134d5ea85b80fc1c6c8ce1bb980d15fbdd66252797d2aa2f752b4745edae6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:38Z), 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/GBDCR1800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7211d17c85c04117641745e3b8900f008060fd29bf67c79868a220f95d385d0d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBDCR1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3651df6bee8ca3c7e376e827bd24290430a89cc8c550fb6281e24d118996f029. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBDCR1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36754966e46909f9a75145851939856e8485c12daca88013998ace7c3a18e98. 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/QM6N21912995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8193b9e68cafd65437cf5e47847d039b6142519c89a7c9b85bcac3f5a132b823. 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/QM6N21912996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc074d0405e1d1c0594527819e031242634d49dff5d92fa463f42d8ca03beda. 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/QM6N21912997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d96ac3f8dd95aee71c785653439e426f738345ad823420ae28985e1d7cb71e. 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/QM6N21912998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fc3c0697c2b7ed306685ddd7edf4ece4ab269218aa7e00e35566908e94bb2c. 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/QM6N21912999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36aca15323abc85f3733f681636d8ecbfefc8b8270ff0e02755aa83b256cbb7e. 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/QM6N21913000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943533e2deec71d9e6c7eadec4303c28cace1990ceed8ea5578d73d5f877bf61. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:32Z), 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/QM6N21913003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55069aacbbaa3697fb4ff25337868bf858dd62233c6fdd02c65e4cc416f3cddf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM6N21913005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556f0d793bee59c20d54e01d1f9706ec9c9b4b2300b8693f34ba9c5c1b071bf. 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/ARF842000006.
Amigo Lindo del Alma (Banda Sonora Original de la Película)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611004acce775a5da234764bd1359db9d78bb32dab46def8631f4064a3227b39. 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/UYS051900525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6467eb18c7e0c9a5b7200af07b5dc80077eaa440652cd086be7d6a07f5d50. 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/ARF020901767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34659698f47221e907a95b32242081ca2d3bc63dd8493d6e79e1bfc0ecf2f4b8. 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/US7VG1995421.
Los Abrazos son Instantes Decisivos Vol. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844102a44f3a19dfb29cff8aefaed8fd20bc30c203d848087d7da8902667e112. 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/UYP462300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6809279cb50f90a6f71b53585f4e36961918d1413d877bcc7f381766f138284. 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/US7VG1995423.