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 0x953005e3b16433f5d5697402bb300734c02ca43f51f411a690d7eb34290f26bb. 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/894beb2f-8a35-474b-92c3-045de70ba4ba.json and https://artists.proofprofile.net/proofs/artist/894beb2f-8a35-474b-92c3-045de70ba4ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nichts als die Wahrheit (Der Fall Lance Armstrong und die Aufarbeitung eines der größten Betrugsskandale in der Geschichte des Sports)