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 0xdecd62c33c87250adf998e37f783c228f38751157148d20324d5619eea987cf3. 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/4d4b8837-19b4-4ff6-be3e-41fad23246ec.json and https://artists.proofprofile.net/proofs/artist/4d4b8837-19b4-4ff6-be3e-41fad23246ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
待到花落燕歸時 (電影《精武陳真》片尾曲)
醉紅嫣 (網路劇《世界上最動聽的你》插曲)
好好愛你（電視劇《東八區的先生們》推廣曲）