is a 2022 Japanese animated coming-of-age fantasy adventure film written and directed by Makoto Shinkai. The film is the third and final installment of Shinkai's disaster trilogy, following Your Name
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 0x0025f29d740bf5a7364464ca3dc8e9155af014371255416ccd69fddc661f0c80. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4ca1044-8d69-4db9-895e-aef47c0a1493.json and https://artists.proofprofile.net/proofs/artist/c4ca1044-8d69-4db9-895e-aef47c0a1493.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).