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 0x8264daa4474fcb2448aa8975b5cfddce6c5c93439c8f7fbda30260d729d44b34. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f7801dd-5dcd-4590-82d2-baccee71c761.json and https://artists.proofprofile.net/proofs/artist/6f7801dd-5dcd-4590-82d2-baccee71c761.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
マーチング-明日へ- オリジナル・サウンドトラック
Chopin Etude, Op.10-3: Farewell to Father and Mother
マーチング－明日へ－オリジナル・サウンドトラック
For H.// Sweet Time Suite Part 2 (feat. tea, Pat Glynn & 石若駿)
Rachmaninoff Piano Concert No.2 1st Movement