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 0xef2e019ff127ab1ef1e440ba3a683e911ce492c09dc23d386b997ed591db11de. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/607aab8c-dece-4411-b0af-9282a7bc8dc3.json and https://artists.proofprofile.net/proofs/artist/607aab8c-dece-4411-b0af-9282a7bc8dc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x9c305aa960842822816d8296b289861ebec467e06e1db034a5d2a77a77982159. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRA341206920.
MBC 내손을잡아, Pt. 1 (Original Television Soundtrack) Pt. 1
Love To The End (KBS 2TV Drama) OST Part.12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e80c4d4b78b5c22ae78564b3a0387b93450d2d768447f5faa2a3ece6d36d5d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:25Z), 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/QZEKE1843962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa344002c9211418ab7a9248cf04a3ca0ae86665992fd930eb4c0a7a5c1d7a2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:55Z), 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/QZEKE1868094.
No Matter What (Original Television Soundtrack) Pt. 19
Homemade Love Story (Original Television Soundtrack) Pt. 17
New 사랑과 전쟁 (Original Television Soundtrack) Pt. 4
Beautiful Now (Original Television Soundtrack) Pt. 16