José Rómulo Sosa Ortiz (17 February 1948 – 28 September 2019), known professionally as José José () was a Mexican singer and actor. Dubbed as "El Príncipe de la Canción" ("the Prince of Song"), his pe
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 0x60676a67d1a176983419eb34914558e539b5cb90c9ba667a2034a2998b0ce5bb. 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/ad189238-aff2-4ae8-a8fe-a7c2485c0587.json and https://artists.proofprofile.net/proofs/artist/ad189238-aff2-4ae8-a8fe-a7c2485c0587.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jose Jose y Sus Amigos con Amor: Las Mas Bellas Melodías Mi Vida
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 0x442f60d08d7fea20a64745adc24fb12446e95a58a80f5e49f89e4b5014b6a8aa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF330910146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0c9c7a57b45233cebcc7edeba99369e98056a6064a9a474b79350cb360eb58. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:55:25Z), 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/MXF330910148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3bea62d0a01d5128c0d42c35ae5860971e79e34ddb12f2971d0e22a3e8def2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF330910151.