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 0x63304ae5d3d6c51147e2cd727e912e6e7ff56390dd9162f809bebf3ac7b6f37f. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a03067a-0b46-4713-8f21-bbb812d0d497.json and https://artists.proofprofile.net/proofs/artist/5a03067a-0b46-4713-8f21-bbb812d0d497.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Like A Star (Police University OST Part.2)
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 0xf16382bca5c81b91ebf5a83ccfa67ea4e1d9334cef1e3d1da955dd54bc632386. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/KRA382160092.
Watcha Original <DOUBLE TROUBLE> 2nd EP Crown ‘Sonata of temptation’
Watcha Original <DOUBLE TROUBLE> 3rd EP CONCEPTUAL – Fantasy ‘Love me or Leave me’
Watcha Original <DOUBLE TROUBLE> 4th EP LEGEND DUET – 'Trouble Maker'
Watcha Original <DOUBLE TROUBLE> > 5th EP History – ‘Again & Again’
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c9decf369615fcd2dafa0517073427e606abb2b02fbf00952940f84bc97a69. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:53Z), 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/KRMIM2469170.