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 0x0075dd8928fd92da888e9ae8f945ed6781893a803151275198b9ffb321cd07ca. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b556fd3-4ae4-416a-b75f-7db47efdd48e.json and https://artists.proofprofile.net/proofs/artist/7b556fd3-4ae4-416a-b75f-7db47efdd48e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Best Selection of Anime Song Japan ~Marimba Version~
Best Selection of Anime Song Japan Vol.2 ~Marimba Version~
Best Selection of Anime Song Japan Vol.3 ~Marimba Full Version~
Best Selection of Anime Song Japan Vol.4 ~Marimba Mini Version~
Best Selection of Anime Song Japan ~Marimba Inst. Full Version~
Best Selection of Anime Song Japan ~Marimba Inst. Short Version~
J Anime Song Selection "Midnight Tokyo Tower Hour" (Marimba)
Ghibli Anime Song Selection "Midnight Skytree Hour" (Orgel)
J Anime Song Selection "Midnight Tokyo Tower Hour" (Orgel)
Lullaby for Kids - The Best Selection of Disney Song - Music Box 2
Lullaby for Kids - The Best Selection of Disney Song - Music Box 1
Lullaby for Kids - The Best Selection of Disney Song - Marimba 1
Great Relaxation! Best Sound for Study - Anime Song Collective Vol. 1
Great Relaxation! Best Sound for Study - Anime Song Collective Vol. 2
Great Relaxation! Best Sound for Study - Anime Song Collective Vol. 3
Great Relaxation! Best Sound for Study - Anime Song Collective Vol. 4
Great Relaxation! Best Sound for Study - Anime Song Collective Vol. 6
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 1
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 2
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 3
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 4
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 5
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 6
Best Hit Anime! Healing BGM Series for Anime Song Lovers Vol. 7