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 0x1d6c0cb301780b1dc060204da3dd6bff8c24e71200544a4c4a3e7bf4ad69716a. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a762b332-b840-4b6d-b61b-5f2f80e5451e.json and https://artists.proofprofile.net/proofs/artist/a762b332-b840-4b6d-b61b-5f2f80e5451e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
韓磊-人世間 『春色剪硝煙 恍惚間讀懂你容顏』【《吉鴻昌》電視劇主題曲】
歲月靜好 (電視劇《在桃花盛開的地方》主題曲)
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 0xba72f4b15d2414c23b33638d736f82ed2aa2782c61fb5e3f3255f20410716d21. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:57:52Z), 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/TWDL72103278.
敬敬 (電視劇《大江大河之歲月如歌》片尾曲)
理想（系列短劇《理想照耀中國》主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844875cd8e9d6f40c1240e097e5c725eab58a6aabb6bb511c7176a874bf34198. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNZ502100289.
理想(系列短劇《理想照耀中國》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844875cd8e9d6f40c1240e097e5c725eab58a6aabb6bb511c7176a874bf34198. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CNZ502100289.