Ensemble Renaissance (Serbian: Ansambl Renesans; Cyrillic: Ансамбл Ренесанс) is the first early music ensemble in Serbia and the second in south-eastern Europe, having been founded in 1968 (the first
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2cae15f99fd20127625920136f94b0a6d0242d0a71e7c396fca359e698e99. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1af09d65-f55e-4eb1-b17d-80c2c49c19d2.json and https://artists.proofprofile.net/proofs/artist/1af09d65-f55e-4eb1-b17d-80c2c49c19d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roots of the Balkan - Music and Songs From Old Serbia