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 0xc8a8adf66984a8140b129ad89620a8c590677767f05dabc4b4efe113f377ebf7. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07f19ac-2eee-47b9-aa5f-9816eb1f81fd.json and https://artists.proofprofile.net/proofs/artist/d07f19ac-2eee-47b9-aa5f-9816eb1f81fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
꽃길만 걸어요(Original Television Soundtrack), Pt. 24
위험한 약속 (Original Television Soundtrack), Pt. 5
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 0xe0788406ea7d293e091d58d8786a65b0afeedf3e641a84a8398ccba57cfc72fd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:27Z), 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/QZNCB2185140.
Coffee Fox Kim Sam Wol OST Part.1 (Soundtrack)
Three Siblings Bravely OST Part.7 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57fe73f9906e98fd50e7e2f3b966810e38e10621311ce7e031d9e59d4ac1b32. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:27Z), 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/KRA492300470.
수지맞은 우리 (Original Television Soundtrack), Pt. 8