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 0x79e36edaac1c7a730a3f5a1802ee89ba9d816fab1ad69c6b69b847a1dbfbc5ef. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a555fdfb-ba58-48d9-9354-76af4cd5e3cd.json and https://artists.proofprofile.net/proofs/artist/a555fdfb-ba58-48d9-9354-76af4cd5e3cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
再见失恋(院线电影《非正式爱情》插曲)
再见失恋（院线电影《非正式爱情》插曲）
剑客信条(电影《悬探包拯》先导主题曲)
小姐姐 (《楼下女友请签收》影视剧插曲)