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 0xf067536112699f4bb77ae73632eaad511551fdb9d5a7a3e83cd4ba143c971221. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/806052b8-53d0-4b1a-83f1-e3d99892aee1.json and https://artists.proofprofile.net/proofs/artist/806052b8-53d0-4b1a-83f1-e3d99892aee1.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 0xe728f280ba2ccfc709736fbcdf603082fb9d01a356f62b0864494dcb3d6f418d. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/KRNAR1706422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce917baab598c5e2aa4a895c6732cfb012d93695077913b1984b2b280666333. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:01:52Z), 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/KRNAR1706425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989e5a39344f6fe92d7a11a6143c1adfd7a9976afd48cbae14327f30e8fb6be7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:24:06Z), 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/KRNAR1707589.
로봇이 아니야 Pt. 4 Original Television Soundtrack
Familiar Wife, Pt. 5 (Original Television Soundtrack)
Familiar Wife (Original Television Soundtrack), Pt. 5
Bad Papa Pt. 6 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e65d253779f69628f07568125ef37eda51db9aa788eba8343bb3d8ce46f7fb4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:17Z), 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/KRMIM1902771.
The witch shop 어서오세요 마녀상점 (Original Television Soundtrack), Pt.3
The witch shop (Original Television Soundtrack), Pt.3