Juana Bacallao (26 May 1925 – 24 February 2024), also known as Juana la cubana and Juana La Caliente, was a Cuban singer and musician. She started her professional singing career under the aegis of Ob
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 0xafd88e2d175633213bc6417eee9d865790e89374344710ae77bad84847df274c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e168ab9-a884-4115-888f-08b6da0627f7.json and https://artists.proofprofile.net/proofs/artist/6e168ab9-a884-4115-888f-08b6da0627f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).