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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd589be73080a774c478883ee33a5b5b6026c165deb205b660c86867f2901dd6a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9400863f-1f46-43cc-a223-6ce6b289183a.json and https://artists.proofprofile.net/proofs/artist/9400863f-1f46-43cc-a223-6ce6b289183a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Legend of Zelda: Skyward Sword Piano Covers
Ballad of the Goddess (Main Theme) [From "The Legend of Zelda: Skyward Sword"] [Piano Cover]
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905dcff5613e9a0174e5c554d34ef97f0270e2d2011bc20a03d45cf1f685d069. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/AUXN22132127.
Link and His Loftwing (From "The Legend of Zelda: Skyward Sword") [Piano Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d31fe6144deef65e2ea36c3c753b20c4f95a6c9decfe5ce2f8881e51e91420. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AUXN22132131.
Farores Silent Realm (From "The Legend of Zelda: Skyward Sword") [Piano Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e24b6f2c34d06bb4f449bad8d9e938a9f771dd85860f30b153413177bb260a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:16Z), 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/AUXN22132137.
Mario Kart: Double Dash!! (Piano Covers)
Animal Crossing: New Horizons (Piano Covers)
Sonic the Hedgehog Collection (Piano Covers)
The Scumm Bar Theme (From "The Secret of Monkey Island") [Piano Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471ab7f6d24ba3af0f4173d0f5aa2af95d4fbe280b9d2b85cc614a797bb7211. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/AUXN22267831.
Demon Slayer: Kimetsu no Yaiba Collection (Piano Covers)
Paper Mario: The Origami King (Piano Covers, Vol. 1)
Paper Mario: The Origami King (Piano Covers, Vol. 2)
Peaches (From "The Super Mario Bros. Movie") (Piano Cover)
Main Theme (From "The Legend of Zelda: Tears of the Kingdom") (Piano Cover)
The Legend of Zelda: Breath of the Wild, Vol. 1 (Piano Covers)
The Legend of Zelda: Breath of the Wild, Vol. 2 (Piano Covers)
Super Mario Bros. Wonder Themes (Piano Covers)
Baldurs Gate 3 - Main Theme (Piano Cover)
Rust (From "Violet Evergarden") (Piano Cover)
Unravel (From "Tokyo Ghoul") (Piano Cover)
Super Mario RPG: Legend of the Seven Stars (Piano Covers)
Command & Conquer Collection (Piano Covers)
Level Complete (From "The Super Mario Bros. Movie) [Piano Cover]
A Cup of Liber-Tea (From "Helldivers 2") [Piano Cover]
Super Earth Anthem (From "Helldivers 2") [Piano Cover]
Main Theme (From "The Legend of Zelda: Echoes of Wisdom") [Piano Cover]
Il Vento D'oro (Giorno's Theme) [Piano Cover]
Damned (From "Call of Duty: Black Ops Zombies") [Piano Cover]
Celestial Symphony (From "Black Myth: WuKong") [Piano Cover]
O Death (From "Until Dawn") [Piano Cover]
Pilot for Hire (From "Microsoft Flight Simulator X") [Piano Cover]
Main Theme (From "It Takes Two") [Piano Cover]
Burning in Hell / Devils Gambit (From "Friday Night Funkin': Indie Cross") [Piano Covers]
Genshin Impact Collection, Vol. 1 (Piano Covers)
Genshin Impact Collection, Vol. 2 (Piano Covers)
Main Theme (From "Mario Kart World") [Piano Cover]
Genshin Impact Collection, Vol. 3 (Piano Covers)
It's Just a Burning Memory (Piano Remix)
How to Train Your Dragon (Piano Collection)
What It Sounds Like (From "K-Pop Demon Hunters")
Snake Eater (From "Metal Gear Solid 3: Snake Eater")