Cautivo () is the 12th studio album recorded by Puerto Rican-American recording artist Chayanne. The album witch released by Sony BMG Norte on September 27, 2005 (see 2005 in music). This album became
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 0x978054ca716d2b5ff9ddad34873612ceba210dca151356a64c5a0edc6e0c2937. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3b5844b-a66b-4e99-809c-e512b2fff6e0.json and https://artists.proofprofile.net/proofs/artist/e3b5844b-a66b-4e99-809c-e512b2fff6e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).