Gustavo Núñez (born in Montevideo, 15 February 1965) is a Uruguayan bassoonist trained at Musikhochschule Hannover with Klaus Thunemann and the Royal College of Music with Kerry Camden. He has been pr
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 0xf1e00db9308eddf5014d3bf356e1f031d6d75d2cd736dc838bf1f06f3cbc9f09. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9db59ada-06d7-48f7-9948-fe60ef0f3c40.json and https://artists.proofprofile.net/proofs/artist/9db59ada-06d7-48f7-9948-fe60ef0f3c40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bassoon Concerto in C Major, RV 474: I. Allegro
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 0x29003f0c2de3f357d63577df7c08f85d0e0bd5d25efbf5c551d90f060b368400. 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/NLE421406101.
Bassoon Concerto in C Major, RV 474: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b3454556be3a1ac964196d620d3a975bf72069923fe3cd1f39a3c03a172efc. 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/NLE421406102.
Bassoon Concerto in C Major, RV 474: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9a452d5f30bee709740599a2fd9d478123f5694517eed539afa4ac74c8d62f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE421406103.
Bassoon Concerto in F Major, RV 488: I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35e366261456a9fa5f7460455b748937f5ce4338d3ea10fe0a4b86687c55694. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE421406104.
Bassoon Concerto in F Major, RV 488: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3007257c7ab4571f79395c9765e2d36ac396df0d4573545c611565e72038d66. 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/NLE421406105.
Bassoon Concerto in F Major, RV 488: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c4e79fe81b192ece019bde613dc1f922a4e4b744d39cdff90268e92f89701. 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/NLE421406106.
Bassoon Concerto in B-Flat Major, RV 501 "La Notte": I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656da1dbf1e7816429e3f8222ae53125767f2cd1442b63cd951908db259c1d06. 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/NLE421406107.
Bassoon Concerto in B-Flat Major, RV 501 "La Notte": II. I Fantasmi. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321044f9bc74864afbf40ae6d8ae7e1182484cf942871548eff4c08d9a1fa61c. 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/NLE421406108.
Bassoon Concerto in B-Flat Major, RV 501 "La Notte": III. II Sonno. Andante molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841249639f3bd4c82b3584b774996ce48b10058ddd1e96d8d8cb9f8d7c8d8f72. 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/NLE421406109.
Bassoon Concerto in B-Flat Major, RV 501 "La Notte": IV. Sorge l'aurora. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd140935663c3c07578bcc4ed62fd0e2a0d2451cbdf7591a6e5fc17bfb581c9c9. 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/NLE421406110.
Bassoon Concerto in C Major, RV 477: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2c12e12754802eed2e1a0ee4e2188a4dbd2902881e61e8ed5ce1a14bb286c. 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/NLE421406111.
Bassoon Concerto in C Major, RV 477: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce4981d964dcdfb86fda818d72f874bf68d33df852803ffe17352c4b8c8b6ca. 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/NLE421406112.
Bassoon Concerto in C Major, RV 477: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc07ad41109bd15eb6c49cdad198fc7b0f1eb190f73bd636e56c5268328ff84. 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/NLE421406113.
Bassoon Concerto in A Minor, RV 497: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97c6e368a21cb0be6709bb92e3a0cad779d33f4b7a71900b0638564ba60cb40. 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/NLE421406114.
Bassoon Concerto in A Minor, RV 497: II. Andante molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a656c2a462e0f76eda799baf721175077892ab8149a36f9a26d0d501088ae9d. 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/NLE421406115.
Bassoon Concerto in A Minor, RV 497: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45d4fa4a783e946a4d5780f83e3e3e007f94a9a98788a667fd4e60b4767c996. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE421406116.
Bassoon Concerto in C Major, RV 467: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d0a40bb696546b4d1b118b5c79d9ade566c7fbca52b3a97ca178438f456e5a. 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/NLE421406117.
Bassoon Concerto in C Major, RV 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9db49c4a01939e088a131e0ba3a7ab084fe7118c752b663cab6132fe4bc3e3. 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/NLE421406118.
Bassoon Concerto in C Major, RV 467: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0c458895ba553e2be0567200cbd207e3150a17e8267fa5d30f59684f0c596. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLE421406119.
Capricho: Works by Olthuis, Lamarque Pons, Villa-Lobos & Gubaidulina
Concerto for Bassoon and Low Strings: III.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf963d33db14ecfd93bfc1d848155f3c9e684c90c81554ccacc63303ba9a0fa0a. 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/NLA460912272.
Horn Concerto No. 1 in D Major, K. 386b: I. Allegro K. 412
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aea0eef866edc42ffa8d704f5880d06a1a8e37492ced95ff1e7193a410c200e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE420501501.
Bassoon Concerto in B-Flat Major, K. 191/186c: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3da5da84e986f4fad5236a65e02fa0e0058b804405dc83963dc0e1e4e090d28. 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/NLE420501506.
Bassoon Concerto in B-Flat Major, K. 191/186c: III. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d59ff6d15d7ba7ba4a14d3f83538585900cc17a7e29aa0dbdcfad298f4a6a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLE420501508.
Bassoon Concerto in B-Flat Major, K. 191/186c: II. Andante ma adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ca0759b41b289aee6d728120d58161c646452bcb6a7c1410b424349eb242b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLE420501507.
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