Kurt Masur (; 18 July 192719 December 2015) was a German conductor. Called "one of the last old-style maestros", he directed many of the principal orchestras of his era. He had a long career as the Ka
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 0x95a3641def6193aa2745a862b7fb4d2af85bda5fbfb938bad2f8e24aeb78327b. 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/efe47a05-db6a-4f67-97f3-786f31fb442c.json and https://artists.proofprofile.net/proofs/artist/efe47a05-db6a-4f67-97f3-786f31fb442c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).