Rubén Urrutia (born May 7, 1967), better known as Ruben DJ, is a Puerto Rican former rap star who became famous in the late 1980s with the hit song "La Escuela". Career Rubén was interested in dan
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 0x56e7382081ce4ab18fb33e72202ab980c2908ea276e4121d5d301f45f5d99353. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79bd9e78-cca1-401a-9f23-7c082b0cbae2.json and https://artists.proofprofile.net/proofs/artist/79bd9e78-cca1-401a-9f23-7c082b0cbae2.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 0x17070c9fc8069b623764305a60fb64167410395e66fc60e4dc58cf82ef51ebef. 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/US7VG1546395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f9abe9638c85e59957927351eeb2df1a2cc352be57fa549050e5fcac2713ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG1546396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe6bb5a93bb4d9581803e3527cc9fe783215cad541897ddfe4cc1ab3577cd6. 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/US7VG1546398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9986beec6fa70742356c23b09ab99faf425fa929e741d8ffbb8e23e7d1ae0cb4. 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/US7VG1546402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db6f1da7271c18a5691b31a826a0cb2f8c041cf2c1a2ff9c19b684b435d3087. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US7VG1546394.
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 0xb68b32440fc2f1fa68ac8e2881ca07c79e9c1fb9bb4eda70805eb5ba316008ab. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US7VG1546404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb936b8fb7f3c2c1e0ee4af9fd5ceec1f04c676d029ac4bef7cdd20e6d3eb5414. 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/QZTB32317350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7db99d1e44e42573a6599d358e70ce10484b4369bb914b9e747898302d48629. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB32317352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df7f75d77b0765514f4a46852d8133b5668d137c37f7e1f08422e60a6621dd. 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/QZTB32317354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06df20e5f5b5d97b6d306a318602d332df73ac0ae5cfef78020e27ad98bf8d. 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/QZES72215696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4dd494c6c4a206ec79d6ac581d563f032a5d2d97d96f4d74bde45839a5b575. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZES92104525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ef99d2f36168f8adacc44ab43bd47eb8ee243d2f5778ad05216744f25939f5. 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/QZNWX2119660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a68e23253ab57a258825802dbef59cc67ce5f26a09f486947714e516e112b1. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZTB32317355.
Fiesta Mix USA: Sopa de Caracol, Bobine, Hot Hot Hot, Macarena, El Tiburon, El Venao, El Baile del Perrito y Mas.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6009f40d60c8082db04590712e8b3182e5d470fbc2f4ca7a36355da068c29500. 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/USV351343945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38770d8b597ff62ff6790fa79395f3ec9bfe3f1d3ad3df9f8538789c344dbfc8. 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/ESA031421861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b63dfbfd51dbc3d12b7dc09e5cdd712d3bdddf10847d48f77d5d1a7ae6848. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA031421863.
Mega Rap: Los 10 Mega Éxitos de Rap Bailables del Año
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4634421e536a58fe362008f65d480c48127e488d894736ea0a8cd53cf6227. 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/ES71G2302623.
Ponte El Sombrero (Put On Your Hat) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ba56b72e774ab746e48a8c052a0e98f0f0d3801c168b4583cf62a98590126. 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/ES71G2302622.