Fußballclub Gelsenkirchen-Schalke 04 e. V., commonly known as Schalke 04 (), and abbreviated as S04 (), is a professional sports club from the Schalke district of Gelsenkirchen, North Rhine-Westphalia
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 0xea1e9d73597516f101dca38ac159113705869ece6c53505eb75680a55f463c60. 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/8c657b7a-ab1b-4f1e-99c2-67bd8495f9b3.json and https://artists.proofprofile.net/proofs/artist/8c657b7a-ab1b-4f1e-99c2-67bd8495f9b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).