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 0xea5e7c7399c77ba1bfb3e6b897381303093b018c5093fc46039692fa6faf36dc. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fa4797b-1510-422b-9752-942ddf0b79b8.json and https://artists.proofprofile.net/proofs/artist/0fa4797b-1510-422b-9752-942ddf0b79b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
คันไถ ซุปเปอร์ฮิต, Vol. 1
คันไถ ซูปเปอร์ฮิต, Vol. 2
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