Jakov Gotovac (; October 11, 1895October 16, 1982) was a Croatian composer and conductor of classical music. His comedic opera, Ero s onoga svijeta (Ero the Joker), Croatia's best-known opera, was fir
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 0x64c76c6e7fbff881950f3b79431f8bf0e4890118821548a7fe912b72f7997285. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3723f080-a0e4-4d0f-b0c1-e69aad665eaf.json and https://artists.proofprofile.net/proofs/artist/3723f080-a0e4-4d0f-b0c1-e69aad665eaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).