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 0xfde61235ac382de6fa275b6cf693e63c967d037dbe16c6f0283516c1b1df1f56. 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/e59174c8-4783-4e37-988d-ae45f26a80d1.json and https://artists.proofprofile.net/proofs/artist/e59174c8-4783-4e37-988d-ae45f26a80d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Lost Paradise (From "Laputa: Castle In The Sky")
The Promise of the World (From "Howl's Moving Castle")
Arrietty's Song (From "The Secret World of Arrietty")
Ashitaka and San (From "Princess Mononoke")