Julio César "Tito" Rojas López (June 14, 1955 – December 26, 2020), also known as "El Gallo Salsero", was a Puerto Rican salsa singer. Early years Tito Rojas was born and raised in the town of Humaca
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 0xedb59d6e11ff2231134c4b8b06fcbceb2667a38912be6ad7c12ea845f5ad0c66. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/868e1126-8647-4f1c-97da-d6f4130e6add.json and https://artists.proofprofile.net/proofs/artist/868e1126-8647-4f1c-97da-d6f4130e6add.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 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 0x8de847c6e76707ffdad4089a49a025684b876a1c225041e016dfdee12dc06c11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60260611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c7dc335fee236cc773de93d4bbe3b7f0a2636cb6e869eae0f85e243697d9a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60260615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea177572fb09eed66966e2e0f5816ab860b56a460c4adb481e41344591e273d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP69962501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924f3e0630af64adcfe9480e5e13402178d4ed01163b4d4274cc7d420c912c10. 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/USMP69962502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f744ee658c6a9b7ce508dac177efddabce72d5089c6a5c9c853b5ac19cae46. 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/USMP69962503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c874d935c84db43563dc20098521889dd3af16e82bc0c1fa3411ed9750ee2b. 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/USMP69962504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41e31471d0d3984983375f3bf11c221f962c7cc43a90989304788a0f5ade88. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP69962505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216a6a589c13a5c458cf1ded2de7dbf677d0dab57022738f650121762462a60a. 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/USMP69962506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830ca45961d730f1af37800471664a26a763ae9b847422104548b27694503a5. 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/USMP69962507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab512676bcb78e7a319ceb9515c63a5837632b9707de90c8e763596c633f68. 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/USMP69962508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4db9bc8d1c98626593dca1648d1ece39a78946b0995a845c358bfe27fae111. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3374e02bc7177872b00efd8005cf4965b8306ab54d11f51a3f117b4b2686e9cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c8e613556621076a8b6e493d5663a3569dc3d0070501fe90111cc059e277b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd173ef99a83524cf05729d7f97ad369a1cb4496f845d1c7efebafba57b2392. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebab9fbcb384bb9fd03a6a591c2d58b51d16add54aff7695742a9b91747c3f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d63dc18d0c785ba75418c9c273dbc8c2e08899ac8a001c7f5fd8b533d9daee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1722bc63f7a1c91d00a556a866f365c08f4506ceb52a1dbab23f5a909860b. 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/USMP60361097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456954d4f4a2a1e30baabc7ecd8d5504b482c753c0bb8737e498b63243a911e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMP60361098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a82e59c399173371123c5b18ec26cb93d2af722c95208b1963299ac4832dc8. 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/USMP60160535.
Un Callejón Sin Salida (feat. Tito Rojas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66bd19c86cc19b063bcea844261829cf761c2b6e0f476a1091798cf81fbf702. 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/USCGJ1562566.