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 0x1c6123dafdeaee31919f97265502a08252b9164f6b1c488242529b11de0f1a82. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c3b263c-1c36-4ce2-932a-bdeb0af8d1f7.json and https://artists.proofprofile.net/proofs/artist/3c3b263c-1c36-4ce2-932a-bdeb0af8d1f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Anh Sẽ Yêu Em Đến Hết Mùa Hoa Rơi (Cổ Động Loanh Quanh)
Anh Sẽ Ôm Em Đến Hết Mùa Hoa Rơi (Cổ Động Loanh Quanh)
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 0x7bf83e2449da28e3dcbf9e147458c91b1db11703b6a075f44b1e4e36c7be5f14. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZFZ72056109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf14448000ee07889ec4e1ca0655061f5c02044940f6467097fd29e6a9c791a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:38Z), 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/DGA0L2358753.