Konstantin Sellheim (born 1978) is a German classical violist, who has appeared internationally with a focus on chamber music. He is a violist of the Münchner Philharmoniker, and lecturer of viola at
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 0x2ce5b6b614153e21af75d14e97a36ddd0b9a15943dec668bf86ec3caf9f7f4c5. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d94f7dc-1f28-421d-a894-047b6f179439.json and https://artists.proofprofile.net/proofs/artist/7d94f7dc-1f28-421d-a894-047b6f179439.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).