1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeacda3c5243bb301cc89cd9bcdde6b01ddc9f0142d4b76b4a070d2d1b00b7682. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d1b3763-6331-4d1e-a697-2af51f3d47b7.json and https://artists.proofprofile.net/proofs/artist/7d1b3763-6331-4d1e-a697-2af51f3d47b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).