Urs Meier (born 22 January 1959) is a retired Swiss football referee. He officiated at the 1998 and 2002 World Cups, taking charge of the semi-final between South Korea and Germany in 2002. He also re
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 0x683d94cdb174d01e4291a99238bf2f2ef74e2feb73d0d554057bbfa320a60087. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ac36b08-d01d-4322-81ae-a7df0aac55d1.json and https://artists.proofprofile.net/proofs/artist/5ac36b08-d01d-4322-81ae-a7df0aac55d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).