Joaquín Rodrigo Vidre, 1st Marquess of the Gardens of Aranjuez (; 22 November 1901 – 6 July 1999), was a Spanish composer and a virtuoso pianist. He is best known for composing the Concierto de Aranju
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 0xa44b4ebd7cedc8bb9232a8ee1e64594987408e012c5db16de538fbc850d480a9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5d35f8c-5d99-46b1-9d59-a4b6a55597f6.json and https://artists.proofprofile.net/proofs/artist/d5d35f8c-5d99-46b1-9d59-a4b6a55597f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Joaquín Rodrigo: Obra para Orquesta de Cámara II
Orff: Carmina Burana, Pt. 1 "Uf dem Anger": Tanz
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 0xd179917e799ba27619761e8368004ac99c02520a5aee3c1f9482b67fed93c4fa. 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/GBAYC0402180.
Orff: Carmina Burana, Pt. 2 "In taberna": Estuans interius
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eee6dc7817b473a7c8f3f6d4d23224e0779fb575f64e7f66055d7fc0d6afe2. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBAYC0402189.
Shostakovich: Symphony No. 14 in G Minor, Op. 135: II. Malagueña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a358d91a572d2c0ae214405e0ecd59328d50490c68e89974cc56b5a4500bcb9. 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/GBAYC0502297.
Mussorgsky: Pictures at an Exhibition: V. Ballet of the Unhatched Chicks (Orch. Ravel, M. A 24)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f94971b78c7943bdd21794f13a968851fab85322d6ec2008080f2ba54d5bde. 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/GBAYC0704331.
Stravinsky: The Rite of Spring, Pt. 1 "Adoration of the Eath": Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f400a296c9525324b932e49f2a30eb41dbbf401f41fa0dcd754df34ad5b00. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC1300677.
Rodrigo: Concierto de Aranjuez: I. Allegro con spirito
Orchestre National Du Capitole De Toulouse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0250928ab7e69f749ece0b91244af4863fd0dc547291eaa3cf4c71bb45d0fd90. 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/GBAYC2001928.
Concierto de Aranjuez: II. Adagio (Arr. for Flugelhorn and Wind Band by Kevin Bolton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ced72ffd7fcb3e2f8dc69963a1f191d240b69fa94270bd130331ba62c7e1b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLWD9610002.
Concierto de Aranjuez: II. Adagio - Arr. for Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82613a189c6a75ca140ae962a3816ddd698f303aecc31bdd622d15edec8920f5. 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/ITD542001844.
Rodrigo: Concierto de Aranjuez: III. Allegro gentile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cca82e76541f98726d624a9e0037da7255d120ab4295ecd34ff6d630b5b3dc. 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/GBAYC2001930.
Concierto de Aranjuez for Guitar and Orchestra: 1. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941c521d9e41bdbd1add39fcc826c9cad6efbb14e7a80bbdf8d77e03e1f0c4e. 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/GBUM71307390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebdb290c4e82e4a834c13a9e04d513c9eb6798d118f3a200b3ee46156cf39ff. 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/GBLGL1245160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db11a009959790c7f2e1afa2484837c7c7639bb5ed9b9b94ae94e255e9eeee. 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/ATP570394040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b19b68b703578551f9dc36bbbb089c670b91eb90e9aab95f5cf4103c94589. 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/NLA509201208.