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 0x008d2d738ba7e4433322c8e1c0a1cb48d4aaab55b7ad7845bb8a5d0a3254cce3. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/018138ec-de34-41bf-a7f2-88ac72632e35.json and https://artists.proofprofile.net/proofs/artist/018138ec-de34-41bf-a7f2-88ac72632e35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Anh Ổn Không (HC Music x Thịnh Gia Remix)
Cơn Mưa Mèn Mén (HC Music x Thịnh Gia Remix)
Cuộc Hội Ngộ Cuối Cùng (Đăng Khôi x NVN Remix)