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 0xc181b2ace6f509c69434455cf8ac4686fed640c17c10b006e56ad4518da7d145. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c300ffe-ada9-441a-80be-bfbc9614de22.json and https://artists.proofprofile.net/proofs/artist/8c300ffe-ada9-441a-80be-bfbc9614de22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What Could Have Been (From "Aracane League of Legends")
A Cruel Angel`s Thesis (From "Neon Genesis Evangelion")
At Our Parting (From "Sword Art Online")