Christian Wolf is a German designer of board games. He has won the As d'Or for Tutankhamen and the Kinderspiel des Jahres for Klondike in 2001; both were collaborations with Stefanie Rohner. Wolf is a
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 0x3f7ac4656c25571d08ed59ec745fc6fc503c9abd5eac921bd7be36a4f8cf8fee. 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/0d0443da-5d14-4368-ba26-a7edb2ab040a.json and https://artists.proofprofile.net/proofs/artist/0d0443da-5d14-4368-ba26-a7edb2ab040a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).