Martina Majerle (born 2 May 1980) is a Croatian singer of Croatian descent but her grandfather was from Slovenia. Majerle represented Slovenia at the Eurovision Song Contest 2009 in Moscow, Russia wit
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 0xf841d8ae0a77899eb03fb36be9424f4f7913437dcf6ab92d9bdb79dc4470d64f. 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/60db4288-0c6a-41c3-969b-4e9e9cc2f9f4.json and https://artists.proofprofile.net/proofs/artist/60db4288-0c6a-41c3-969b-4e9e9cc2f9f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).