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 0x81a988df742fa9150a283254704b969a02f814e99508d2a26b58246087b0ea72. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0d95c74-24f2-42a1-839c-a92ff4c90c1b.json and https://artists.proofprofile.net/proofs/artist/b0d95c74-24f2-42a1-839c-a92ff4c90c1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
私、能力は平均値でって言ったよね!オープニングテーマ「スマイルスキル=スキスキル」 (TV-size ver.)
私、能力は平均値でって言ったよね!オープニングテーマ「スマイルスキル=スキスキル」