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 0x7710859a450372b5d5786eb73358ae980d318c8254bca778040b365c759575ca. 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/bf272beb-7267-45a7-8d6a-33f79498c70b.json and https://artists.proofprofile.net/proofs/artist/bf272beb-7267-45a7-8d6a-33f79498c70b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yang Guang Tian Shi - Min Ge Jing Xuan Ji
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 0xb715b3d19bf3f5271d7aed0ec2321ef554cb7a6cdfa19c55acdb384395bd4e1a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MYIS11400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac5604af1a2596a36a0ca5711e041d3f390762f0df2f341eca0ca5f4f08b4a8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:59Z), 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/MYIS11400346.
Yang Guang Tian Shi - Shi Jie Tong Yao Jing Xuan Ji
Yang Guang Tian Shi - San Xing Gong Zhao Qing Long Nian