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 0xbbe1616a4a34e7ff26b8490a2e8ea0785677479c3433bde3af612ee688ec0fbd. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/188ba2df-d7c3-4e7f-90ea-592e5bec498f.json and https://artists.proofprofile.net/proofs/artist/188ba2df-d7c3-4e7f-90ea-592e5bec498f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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なんだろう、一生愛して良いですか？
バストアップしか描けない (feat. 重音テト)
これは私だけかもしれないけど (feat. りむる)