Toyo may refer to: Places Tōyō, Kōchi, a town in Japan Tōyo, Ehime, a former city in Japan Toyo Province, a Japanese province divided in 683 Tōyō, Kumamoto, a village located in Yatsuhiro District
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 0xf6178ba256600b5b8d9f06059786bdd1432e8d6567358b2b2b9873e5163f6c71. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/422a5ac6-6f75-4cb1-9800-f9b1250f3003.json and https://artists.proofprofile.net/proofs/artist/422a5ac6-6f75-4cb1-9800-f9b1250f3003.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).