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 0xc78c77643af43482d71997577a2a0a874f7d990ba350988df50aecf1be551692. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff6822a7-3fee-40b1-b4d8-9e936b770fca.json and https://artists.proofprofile.net/proofs/artist/ff6822a7-3fee-40b1-b4d8-9e936b770fca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Legnani: 36 Caprices (Excerpts) / Mertz, J.: 6 Schubertian Songs
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 0x748a1a10db376c04507072af84818ccf93ef960edc940ae8868996f6dd7f7b41. 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/QMFME2292808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ec103ed22ea939b08182789915fb1fef4db208629bcf2ebd3fcb089abd5e80. 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/QMFME2292815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb152020408f250a47d23c35f693119150ce044b16095491935045da013b4d617. 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/QMFME2292818.
Suite del Recuerdo: V. Evocación & VI. Joropo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b60435488aabaf83e35ae24995058ee208822f5b1c8fc71aa78fcabf50c4d5e. 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/QMFME2292822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f0ae3ede710c5a9545888bfe6b03f0081f5f22ce661031f1b0db6cc3adb8b8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMFME2292807.
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 0xcb80dd61761d48634f9257cc56b8c77f38ca406707b9e67948657c40d0bc3097. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMFME2292810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f10994d3b4d178db77271125358a800f9cfb770d5879c87723b12d8a8770f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QMFME2292813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9762ab2ca1cb2696713ba30abfae156cf52720b538c1f9dcfea57bfbcb4c3a36. 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/QMFME2292814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d07a88ba47e2f62a3eda64e56d5867b0aab230a8de185dcbeecb943cc7d9b3f. 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/QMZ621800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b61f80a7b735d83cf503308e6270561801b2a4c527d4183b6441cc11027479d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QMZ621800177.
Suite en La menor (Homage to Sylvius Leopold Weiss): I. Preludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059cd3be056df6c80554b21814109d961c981f92d6144912181d381fc9f4d543. 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/QMZ621700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa036785531837f912f39fa28ed4a11d48f7fa56146c09f29271e6f92e7d8af3f. 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/QMZ621700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cc928da53ed8574e1fcd481a8fb7d66c2b44145eede38cb61d70efc3eec6bc. 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/QMZ621700064.
Suite en La menor (Homage to Sylvius Leopold Weiss): IV. Giga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3836ec37c997861189c6afd2d684c068cb1a08d6422967f2b85b8c878dd325. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QMZ621700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56a21c9079a1d85b3eb6b5cd98b9f323b7e29c932237858eb6836c3e9ea2a02. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/QMZ621700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf5f924796a7ca253f5781e887cf17335d04a0719b2cb44aedc1be89b71c65. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMZ621700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff00f6687969bdbc7ef93cf07a10157134374503955814294ed3d1f602e8688a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMZ621700068.
Bach: Arrangements for eight-string guitar by Raphaella Smits
Guitar Recital: Smits, Raphaella - Walter, O. / Brouwer, L. / Henderickx, W.
Guitar Recital: Smits, Raphaella - Mertz, J.K. / Giuliani, M.
Manjon: Romanza No. 3 / Aire Vasco / Noveletta / Cuento De Amor / Celebre Capricho Andaluz / Leyenda / Quiero Y No Quiero
Guitar Recital: Smits, Raphaella - Weiss / Bach, J.S.
Guitar Recital: Smits, Raphaella - Sor, F. / Coste, N.
Guitar Recital: Smits, Raphaella - Morel, J. / Barrios, M.A. / Turina, J. / Burkhart, F. / Bennett, R.R. (Lyrical 20Th Century Guitar Music)
Guitar Recital: Smits, Raphaella - Mertz, J. / Giuliani
Villa-Lobos, H.: 5 Preludes / Cardoso, J.: Homenaxe A Luis Seoane / Ramirez, A.: Alfonsina Y El Mar / Bilhar, S.: Tira A Poeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933936119721fe57c9ec620143837f852aff8b4461f55a82bbf8e29979150d62. 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/DECP69605010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6f5d7892f8f27a53f57454bf2ec8e58c69bde46e05dadbca4b8b8eaa16919. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF050500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a0c796b73a4d6ee0d2d1fac3c2af83c51b6a084c2f81b6113d926d7bf1f960. 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/ARF050500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc344495cef8a8ccc64dd44a81c5b823ebcc6bf4db60858672fdc63e27aec4. 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/ARF050500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b9a5e25239374f6112163e40b88c4f15a7898589699cdbcecf80cfdf6f761e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF050500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716f51138e0cf27daef239d66f8387bb68a02399a411a109efcba37f986b658. 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/ARF050500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce4a9abf368b7e4e9e7893b8bd940fd687f28a23a4354f60f0c63662588551. 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/ARF050500183.
Festival Guitarras del Mundo '95 (En Vivo)
Festival Guitarras del Mundo '96 (En Vivo)
Garcia Lorca, F.: Canciones Españolas Antiguas / Falla, M.: 7 Canciones Populares Españolas / Rodrigo, J.: 3 Villancicos
Vocal Music (Argentina and Brazil) - Cardoso, J. / Assad, S. / Cartola, A.