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 0x3bab33d3f07cd9c01af249cf5870504be2ebe9e8a559323bbf7869da67b1716a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa254eda-33f7-42af-bd68-1172c7c82088.json and https://artists.proofprofile.net/proofs/artist/aa254eda-33f7-42af-bd68-1172c7c82088.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Queen For Seven Days (Original Television Soundtrack) Pt1
훈남정음 (Original Television Soundtrack) Pt. 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 0xfe08ac522b51183d154bb1660da953863be81c4aee270ab27ef987a6f2bc25eb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZF452026705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb0cdffcaefdf5802a56290d64645b9dc1a8bbe02c7cf1d5f9621e329051aa2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:15Z), 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/KRB920901511.
Where Stars Land, Pt. 6 (Original Television Soundtrack)
Where Stars Land Pt. 6 (Original Television Soundtrack)
MY ROOMMATE IS A GUMIHO, Pt. 3 (Original Television Soundtrack)