1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2f39d4f9ca5f847f090b0347d6a20142b186295d8a3d65f0823b9c2299e38e71. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1453a47a-a824-44af-b280-f1d58a11d84d.json and https://artists.proofprofile.net/proofs/artist/1453a47a-a824-44af-b280-f1d58a11d84d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
7ORDERコメント入り＆メンバー選曲『一歩踏み出す時に聴きたい』プレイリスト
COMMENT：安井謙太郎・真田佑馬・諸星翔希
7ORDER LIVE TOUR 2025 EGG 〜笑顔で頑張る5人〜 at 日本武道館
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7ORDER LIVE TOUR 2025 EGG at Nippon Budokan
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Sabãoflower - 2025 (7ORDER LIVE TOUR 2025 EGG at Nippon Budokan)