Berger is a surname in both German and French, although there is no etymological connection between the names in the two languages. The French surname is an occupational name for a shepherd, from Old
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 0x2a1ddfe5764ffcb431aaad95bca8833876d0187c0533535262aad8a97c94f753. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf770552-cfba-4b10-a7b1-c6dccbd3f291.json and https://artists.proofprofile.net/proofs/artist/bf770552-cfba-4b10-a7b1-c6dccbd3f291.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).