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 0xa7650bc884710161367b338d111f2691b03fc1000850f179958ee86cbfd71956. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f49bd0d-4e83-4041-8abc-37c4fcbef32e.json and https://artists.proofprofile.net/proofs/artist/7f49bd0d-4e83-4041-8abc-37c4fcbef32e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O2Jam Analog OST - Find a masterpiece 'Wind, Please stop' (Soundtrack)
O2Jam Analog OST - Find a masterpiece 'Weak in the heart' (Soundtrack)
O2Jam Analog OST - Spread Clever (Soundtrack)
O2Jam Analog OST First Date - 두근두근..고백 (Soundtrack)
O2Jam Analog OST First Date - 영원한 사랑 (Soundtrack)
O2Jam Analog OST First Date - 사랑의 향기 (Soundtrack)