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 0x411121b5c83dcd4f58733a29b933f6a2746da7685662bccfbfeeb1b95214932b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c94ad054-fb9d-4e16-82a1-113e59c9614f.json and https://artists.proofprofile.net/proofs/artist/c94ad054-fb9d-4e16-82a1-113e59c9614f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Idol (From "Oshi no ko") - French version
Be a Flower (From "The Apothecary Diaries") - French version
Fatal (From "Oshi no Ko") - French version