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 0x267d8b876d7902ed591f621c4ec318421ac9dea4546f2794b744f07cc39aeb85. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6717421-eac1-4102-919f-39724648e6fd.json and https://artists.proofprofile.net/proofs/artist/b6717421-eac1-4102-919f-39724648e6fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music that adjusts the autonomic nervous system ~Healing piano~ vol.1
自律神経を整える音楽～癒しのピアノ～vol.1
Music that adjusts the autonomic nervous system ~Healing piano~ vol.2
自律神経を整える音楽～癒しのピアノ～vol.2
Touching the Heart ~Healing Music~ vol.1
Touching the Heart ~Healing Music~ vol.2
Music that adjusts the autonomic nervous system ~Healing piano~ vol.3
自律神経を整える音楽～癒しのピアノ～vol.3
自律神経を整える音楽～癒しのピアノ～vol.4
Music that adjusts the autonomic nervous system ~Healing piano~ vol.4
it resonates to the heart ~Healing Music~ vol.3
it resonates to the heart ~Healing Music~ vol.4
it resonates to the heart ~Healing Music~ vol.6
Resonates with the heart Healing Music~ vol.7