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 0xefbb3d56793411c3d62dbe21ba1b13a05c2a69f36f7f6f0b1cb321f8af8622df. 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/faa955ef-e3aa-4c55-88e4-3f374d04f000.json and https://artists.proofprofile.net/proofs/artist/faa955ef-e3aa-4c55-88e4-3f374d04f000.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flamenco and Spanish Guitar for Reiki, Massage, Spa, Relaxation, New Age & Yoga
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 0x963da6f4547414c9656c97150925de7d75cd00a33b10695de10d373f224a2f98. 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/DENO21130101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2770ca2f12f2cfce73b55a64daad19228c7e1e82d2ad527ff7faa679dd5d37cb. 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/DENO21130107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e97c3bc38fd09baa46e85b939d246bb261b955602a1a6486f41f1c3e5f7e4a0. 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/DENO21130108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e866e478f39b00ef03930e4e0f60e0747588bbeb2a6fa04c117d4ea1ba7356. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DENO21130104.
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 0x295b9cf7da2bfa0df24cdee0ab7c9275b65bd9c65baada5b6e1ed03886287a97. 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/DENO21130111.
Trío Argentino de Guitarras: Alegría Imperecedera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1589f1be7c03535f85cb29a124e54230784f272bd2a095e584b326353374f75. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARF051600540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76987510037ac0ef005df3b85ecad6edc99b97c5d4d8cbec6b7b1a023589c6a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ARF051600535.
Trío Argentino de Guitarras: Las Milongas
Trío Argentino de Guitarras: La Música de Luis Borda
Trío Argentino de Guitarras: Homenaje a los Guitarristas de Gardel y Corsini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9b1453748ce018b95bc965dec6bff92356767a71a4f499c3a744d5a4a9a834. 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/ARG601011723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905ff7bff4868de41b73c13129b42333ed46cca8533d957770169efaa370a7b3. 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/ARG601011724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc65d2d0327a9a2ea7322f5b14635ca21adbe6a3a8ead96bcdb29cd3645e43. 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/ARG601011725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0ca81c5beb7bf613e27c3eaa37f664cd6f5eea7aa01c9ef5237a9616cb9bd6. 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/ARG601011726.
Callejón (feat. Luis Borda, Gustavo Liamgot, Pocho Palmer & Hugo Sanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb9ed7713321681ccd6f0e1ccdc74953e0ca2b853e95dd2b739bff24472b56b. 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/ARG601011728.
Soledad (feat. Luis Borda, Gustavo Liamgot, Pocho Palmer & Hugo Sanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae724fedcda48943b6a0282db5ff7ca53e87df4ed3508b177712a31a8ef6337. 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/ARG601011729.
Añoranzas (feat. Luis Borda & Pablo Bernard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfac63fda82f300adeea56f3b91c7319ba7ffffb112506c489f8a3f0eb081df4. 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/ARG601011732.
Alma de Loca (feat. Luis Borda, Gustavo Liamgot, Pocho Palmer & Hugo Sanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b811c0a8bb3cb9265847f2764f5bf5bda0ceb947633e3ee195ea7d63c901ea. 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/ARG601011734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd8c00daf7094701ca3edbac3c202ecc03277d9855ac762f82497a72c10ab7. 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/ARG601011735.
Temblando (feat. Luis Borda, Gustavo Liamgot, Pocho Palmer & Hugo Sanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8074262d2623315368569f9461ff33e1268f2d2e6a9a5d5794f640449626c. 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/ARG601011738.
Bajo un Cielo de Estrellas (feat. Luis Borda & Pablo Bernard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd000783ac3e7f6149987064bd830f029638bc7d9fd628f35751e9d99fa2502f6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ARG601011722.
La Novia Ausente (feat. Luis Borda, Gustavo Liamgot, Pocho Palmer & Hugo Sanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a880d7202cecb5b34f2d5f02463f3e933b46044c3949b90855594e1395ff8. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ARG601011736.
Fascinación Tango (Tangos für Orchester)
Encuentro de Grandes Guitarristas Argentinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f7e6107f0b4f6121a3d8456c2434d190b4078de7b0effabe8724a27de4501b. 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/DEBL60724730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d98513e00040960240069ca6ed7ae0d04113dcd1d30101d75703e8f2ccebf3. 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/DEBL60724734.