is a 2001 Japanese animated experimental short filmMcCarthy, Helen. 500 Essential Anime Movies: The Ultimate Guide. — Harper Design, 2009. — P. 515. — 528 p. — directed by Tatsuo Satō, based on the
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 0x4f96653882a28d55a747d4e6a87df5537259fd6f88bbeecc65d5a17f8200633d. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f38338e6-4cf7-48ba-afdd-4e51ae5e1fba.json and https://artists.proofprofile.net/proofs/artist/f38338e6-4cf7-48ba-afdd-4e51ae5e1fba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).