thumb|Horst Bollmann Horst Bollmann (11 February 1925 – 7 July 2014) was a German film and television actor. He was born in Dessau. Filmography Year Title Role Notes1961 The Miracle of Father Malac
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 0x7de200b20391ad5de65dc8c2bad240098490929ac50e01e4b8065503fd94b71d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f55db6a-37b2-4174-8450-3046bcade5ac.json and https://artists.proofprofile.net/proofs/artist/7f55db6a-37b2-4174-8450-3046bcade5ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).