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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e480a8ab22b706b21aa7bba9918a501c82d4d31c3503f7ba47e3d8bdd0e47. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1395e7e5-81b5-4745-b749-b51dd832fdfb.json and https://artists.proofprofile.net/proofs/artist/1395e7e5-81b5-4745-b749-b51dd832fdfb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
LIKE (Original Television Soundtrack) Pt. 2
웹드라마 LIKE (Original Television Soundtrack), Pt. 2
Beautiful Now (Original Television Soundtrack) Pt. 6
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84105b85bbf6c17c53e6aba628b9ecf6ad6c9a15da11a5aa4da3df49a22c1f1. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRF702200239 — a six-check JSON result.
This night (feat. Cha So Yeon, woojun & RYUKIE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34994b236c379e4c46db3360832088fd67a74e757fba082f7172ac756e9b76f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRMIM2329974 — a six-check JSON result.
You are like (Art. RYUKIE) (Feat. Cha Soyeon, IFCHAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed35e64c737bb7cc7a7a63f1fac500696f9e1e44867cbb4c08bf3d926039c274. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZZA0P2311233 — a six-check JSON result.