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 0x951f8b8c3963aea647ac0f7b316fdab7d2b7529cdb778568b63631a7dd82e8b0. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f36012c-ae87-4c7e-b80b-418f4a9ec8e6.json and https://artists.proofprofile.net/proofs/artist/8f36012c-ae87-4c7e-b80b-418f4a9ec8e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
夏の始まり (feat. 足立レイ, 初音ミク & 可不)
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Kimi No Sekai No Kansei De (feat. flower)