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 0x439e20052b1d8111944e3fb1fe7d956cf67bf9c57b5bc03c676a3f141479309e. 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/56ee6ad9-ab9f-4f3c-8ea8-60b1e3b798e3.json and https://artists.proofprofile.net/proofs/artist/56ee6ad9-ab9f-4f3c-8ea8-60b1e3b798e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sứ Thanh Hoa (Thái Khang Remix Dizi vs Pipa)
Sứ Thanh Hoa - Thái Khang Remix Dizi vs Pipa
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa42661f05b4b23daca0d1731c2907603d156d9895b5c817e579ac39eef073b. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2165182.
Hoa Vô Thường (Thái Khang Remix Dizi Flute)
Sắc Trăng Bên Hồ Sen (Thái Khang Remix Hulusi Flute Version)
Độ Ngã Bất Độ Tha (Thái Khang Remix Bamboo Flute)
Mộng Cũ Nhớ Làm Chi (Dizi vs Pipa) [Thái Khang Remix]
Buông (Thái Khang Remix Bawu - Hulusi Flute)
Một Tiếng Niệm Phật - Một Tiếng Tâm (Thái Khang Remix Xiao Flute)
Nguyện Quán Âm (Thái Khang Remix Erhu vs Dizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeebe5bcb8375b992e881b811de82e97c67809fb64e13d872180a7f37461ce2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42276406.