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 0x986531fc0431b6c39707088265518df27a351627326b83f371ae43cab0922e60. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f954e10f-e5d9-482a-91b4-6db81cd70b07.json and https://artists.proofprofile.net/proofs/artist/f954e10f-e5d9-482a-91b4-6db81cd70b07.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 0x477f082b71f5909784326bb3d418a275b18dd39651bc5c264a883e6bb4dd775d. 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/USSM19929975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9080fc925803186329f5bc77cb66d32736db3a4f341845e26d35fbb64ee751. 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/ITP901300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e6f404ad4b143551c7ce58284486d41c20b740df40db5c34ae81f5b621305. 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/ITP901300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6906d8cc1da0324b9984b7d27ae1b5499bf7e9b9a9d0a1d220fdcecb3239c. 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/ITP901300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fb7739af35fb13ba8c174cbb69b5ead56eaa649e165f592211f5fc77fa2354. 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/ITP901300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3557b3b3bab3021c8d74cca03e72736de09c7e7b149a03b2e9b78313c2ab30. 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/ITP901300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76363c55a4a0ac84e6c1087c850b9fad9d5eea118692e4e78077158a28fe8896. 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/ITP901300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2658250198678af328c3af094ac901cc4db94f1e08f23e9bc835ae976e7184. 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/ITP901300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d8a979c1987f663110c5ada9234bdc3655d91a17f3787dfdc476fe185188e5. 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/ITP901300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b229d5a8d8ee56391a2a6694a99c9f79322fb2105bcf0f02cdd7ee5b717e83. 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/ITP901300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c51df748627b85c38213be42b33f23228a7ad6b3c2e966a7f26cf4611373f6d. 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/ITP901300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96e965cc85ebf69cea8f26f6aadcf128f067c3c72701e78a2d0f2d145d935e6. 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/ITP901300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193fee7d5cef3a0768fd563d913bc57d13114924c12b12b9f0591f0aa43cacc6. 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/ITP901300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67b0c23e1d321a892840a2d2594652d82503da0d88603dac9d3a10bf1e7a68a. 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/ITP901300016.
Rapsodie espagnole, M.54 - Arr. 2 Pianos by Ravel: 1. Prélude à la nuit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbd32ef00510e31225d710bd2cc3ae4c64b4393e8e58f9ac1d651e99cf5bfb5. 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/GBPFS0600001.
Fantasy in F minor, D. 940 (Op.103) for piano duet: 3. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813a8e517c3b68fcbbddabe858cca3246f0ed3055fbff8b0dade67ea746b843. 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/GBRPH0700027.
Rapsodie espagnole, M.54 - Arr. 2 Pianos by Ravel: 3. Habanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11825ea6befd750dd6699a9e015c61fba6ea66a5c80458438446904432aa8e10. 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/GBPFS0600003.
Trois morceaux en forme de poire: Manière de commencement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3982bab8b97d9e78226e1cb181c4748bdf4f9e9ba8dcf87f65e577d74f434f6a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITP900900013.
Rapsodie espagnole, M.54 - Arr. 2 Pianos by Ravel: 4. Feria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ddb764505742384af933bce1104ddfe8a359b8598ca47be21df42c4ea2c7d. 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/GBPFS0600004.
8 Slavonic Dances, Op. 72, B.147 - For Piano Duet: No. 2 in E Minor (Allegretto grazioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2024bcf6cf56cf6e90bf68612a3db605e496acf152048a83052b324cfe7f449. 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/ITP901400005.
Divertissement sur des motifs originaux français, in E minor, D.823: 2. Andantino varié
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85534c6e42067dec6ccb1d7e0b394eeea6af1018bd4a452220c8339c789a93d. 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/GBRPH0700029.
8 Slavonic Dances, Op. 46, B.83 - For Piano Duet: No. 8 in G Minor (Presto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c602a61fc971b62d729477368c0f583742e589b8ce5d88693fd32d73f4f9bf9. 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/ITP901400006.
Sonata in D Major for 2 Pianos, K.448: 1. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2dc39cd7fced20fc5a08affb1ee8a1a1274155501601ef864a5663fb705d59. 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/GBRPH0700030.
Ma mère l'oye, M.60 - For Piano Duet, M.60: 2. Petit poucet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3676d0395cc6e394aaf70fd50c9d8d0c85678808cb59ae4576ba5c4a236df519. 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/GBPFS0600006.
Sonata in D Major for 2 Pianos, K.448: 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b7ff8dfc5ec139e733a7138f8ac1f7a9c9948df4008263a365d025e9812e9. 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/GBRPH0700031.
Ma mère l'oye, M.60 - For Piano Duet, M.60: 3. Laideronnette, Impératrice des Pagodes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b57c24774b2ba840b789a71700f55b05947f28f206ac30217af673c5ba680c. 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/GBPFS0600007.
Ma mère l'oye, M.60 - For Piano Duet, M.60: 5. Le jardin féerique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763eb87eb922d4b4604ebc9937f546105278c745541c4fd152e9178a8fa2b7a9. 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/GBPFS0600009.
L'Embarquement pour Cythère, valse-musette pour deux pianos, FP 150
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95954c7d3272a28fe47fb50efe14bbef6867daa8355087c93ed8963b39d5eb0d. 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/ITP901400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a36bbc326f99e4f90785f23e15f04bf7ec8e2c23bdfaad3e379c01a0a20018. 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/GBPFS0600012.
Three Preludes for Piano (1926) - Arr. for Piano Duet: I. Allegro ben ritmato e deciso, in B-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccfb61e34120f30ddbf29b9f8679e33505a13decee1804ef23d9043a309d34b. 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/ITP901400014.
Agota - Arr. for fortepianos by Francisco Ibáñez Irribarria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6d261ef40a0b134707a423f934e167dae53860f8c374ae1e177a9292302c9e. 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/ITP901800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9f0f7e7065a6c0a437a002ff304395159ec6167b02eadc47ccb9bbc1feaa6. 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/ITP901800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c5fdb8a065b2352b41b892a22c9acbfe35a5851717839b0f273c0732b9a61e. 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/ITP901800022.
Boléro, M.81 - Arr. for piano duet and percussions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f813056fcda2fda4bca8cf467b498ebc68dad2752bda962864b20a24964e6f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITP901800018.
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
Prelude, Fugue and Riffs: III. Riffs for Everyone
NAZARENO! Bernstein, Stravinsky, Golijov
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee66e7cc276f8062a6dfb7c4c177414d9c5138b20cb8d8eeaa60200572b9aea. 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/GBDGQ2233703.
Nazareno: III. Guaracha y Mambo (Arr. Gonzalo Grau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e66f4bf1d602fdbaad473536d8ed9b6f675c2bff35314c9a71c01bbc778e39. 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/GBDGQ2233603.
Nazareno: V. Tormenta y Quitiplá (Arr. Gonzalo Grau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c0c8b2b2fc99ec3f2c20485410e9fe0d5c44a5b58b67e760c17d74ba3c4af. 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/GBDGQ2233605.
Nazareno: I. Berimbau (Arr. Gonzalo Grau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2d572a801c53a254556bd103cd54608867b17a17a53f7b8438435b6c960e3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBDGQ2233601.
Nazareno: II. Tambor en blanco y negro (Arr. Gonzalo Grau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e6edc0f357feae2c01545919448fef2f9179864d2f468af75447d243a8970. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBDGQ2233602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17334791a55445f04b01452d9e5daa139fce1894457455f94e67f271241d49b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBDGQ2233604.
Nazareno: VI. Procesión (Arr. Gonzalo Grau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dad9ba7a4ec36afc5b507e517f1606250ab90b77e63824ad11fed623a3c25df. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBDGQ2233606.
Concerto for 2 Pianos and Orchestra in D Minor, FP 61: I. Allegro ma non troppo
Sommernachtskonzert 2016 / Summer Night Concert 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7670be0d787656aae876961eddbb2487e31fe0a36f8b131aa046a019e2573e63. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USSM11602629.
Concerto for 2 Pianos and Orchestra in D Minor, FP 61: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b9c7f62c278f7468c94266ba829d000122064ffafb0ce37b270fd1d161e19. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USSM11602630.