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 0x761e1c7691be000a779f182e0e7707b3fc0648c008c654cad2600671a2cb8130. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf0e3d3a-60eb-46bd-ae10-386433dffe60.json and https://artists.proofprofile.net/proofs/artist/bf0e3d3a-60eb-46bd-ae10-386433dffe60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Tender Feeling (From "Sword Art Online")
Title Theme (From "The Legend of Zelda: Ocarina of Time")
Emotional Anime: Piano Collection, Vol. I
Video Game Memories: Piano Collection, Vol. I
Through the Sea of Time (From "Pokémon Mystery Dungeon: Explorers of Sky") [Piano Version]
Through the Sea of Time (From "Pokémon Mystery Dungeon: Explorers of Sky", Piano Version)
Autumn Festival (From "Your Name") [Piano Version]
Hollow Knight (From "Hollow Knight") [Piano Version]
Lost Girl (From "Deltarune") [Piano Version]
Video Game Memories: Piano Collection, Vol. II
The Witch's Breath (From "ENDER LILIES: Quietus of the Knights") [Piano Version]
Adventure Through the Light (From "Made in Abyss") [Piano Version]
Spring Wind (From "Clannad") [Piano Version]
Spring Wind (From "Clannad", Piano Version)
Goodnight (From "Pokémon Mystery Dungeon: Explorers of Sky") [Piano Version]
Goodnight (From "Pokémon Mystery Dungeon: Explorers of Sky", Piano Version)
Main Menu (From "Pokémon Super Mystery Dungeon") [Piano Version]
Main Menu (From "Pokémon Super Mystery Dungeon", Piano Version)
Snowbelle City (From "Pokémon: X & Y") [Piano Version]
Snowbelle City (From "Pokémon: X & Y") - Piano Version
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xca672f821531fa618d732ad5493cff72d7502a8f477dfa1d8c2bfd4233423742. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32164977.
Spirit of Fire (From "Halo Wars") [Piano Version]
A Bewitching Dance - Mizutsune (From "Monster Hunter Rise") [Piano Version]
Wild Battle Music (From "Pokémon Legends: Arceus") [Piano Version]
Wild Battle Music (From "Pokémon Legends: Arceus", Piano Version)
Viridian Forest (From "Pokémon: Gold & Silver") [Piano Version]
Grandpa's Theme (From "Stardew Valley") [Piano Version]
He's a Pirate (From "Pirates of the Caribbean") [Piano Solo]
Zelda: Breath of the Wild - Piano Kingdom
Escape Through the Snow (From "Pokémon Mystery Dungeon: Rescue Team", Piano Version)
Escape Through the Snow (From "Pokémon Mystery Dungeon: Rescue Team") [Piano Version]
Lit(var) (From "A Silent Voice") [Piano Version]
Surf (From "Pokémon: Red & Blue") [Piano Version]
Ginpatsu no Lullaby (From "Hunter x Hunter") [Piano Version]
Dance of the Moonlight Jellies (From "Stardew Valley") [Piano Version]
Gold and Oden (From "One Piece") [Piano Version]
Gold and Oden (From "One Piece") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ff3b7cc4c2c92beb70c890f314b44dfc4c430d9ff0dbb945e42672bfef84f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32172087.
Overture (From "Stardew Valley") [Flute & Piano Version]
Overture (From "Stardew Valley") - Flute & Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c65060bad9b4c1643fb6cc907fe0ca19d6a786ba0eb89cca7bb289d1f11401. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32195862.