1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9a806530bc0c4fccdcc1b9b661f9665426c4a2003392b761e6da41fd8fba50. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2133b20f-b489-4bbb-b05f-df8b5da44629.json and https://artists.proofprofile.net/proofs/artist/2133b20f-b489-4bbb-b05f-df8b5da44629.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xin Anh Giữ Trọn Tình Quê - Rumba Version 1
Xin Anh Giữ Trọn Tình Quê - Rumba Version 2