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 0x652920eff0e89ae662c57570962c57a07368a075d10afec5dfeaea818f4d98db. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05a7ef84-43a4-431d-a3a8-21612b0f50b4.json and https://artists.proofprofile.net/proofs/artist/05a7ef84-43a4-431d-a3a8-21612b0f50b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Best of Studio Ghibli Streaming Music, Vol. 1
The Legend of Zelda - Breath of the Wild Piano Collection, Vol. 1
The Legend of Zelda - Echoes of Wisdom Piano Collection, Vol.1
Hyrule Ranch (From "The Legend of Zelda: Echoes of Wisdom") - 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e82ec4413c598ae3eb1767423d06e20535b84646dc2c8842a2504f08e9460e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUQ0L2404897.
Super Mario Galaxy Piano Collection, Vol. 1
Bloody Tears (From "Castlevania 2: Simon's Quest") [Piano Version]
The Legend of Zelda: Echoes of Wisdom Piano Collection, Vol. 2
Mobile Suit Gundam SEED - SEED Destiny Piano Collection, Vol. 1
Mingle Game Song "Round and Round" (From Squid Game:Season 2) [Piano Version]
Mingle Game Song "Round and Round" (From Squid Game:Season 2) - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a09f8ca47af520d784d8a6c36edbb36c10ec59b62740365bce39dcd8b96ddd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AUXN22502870.
Best of Persona 3 - Piano Collection, Vol.1
Mobile Suit Gundam 00 - Piano Collection, Vol.1
Neon Genesis Evangelion - Piano Collection, Vol.1
Code Geass: Lelouch of the Rebellion - Piano Collection, Vol. 1
Mario Kart Wii - Piano Collection, Vol. 1
Piano Covers Collection - Deltarune Chapters 3 + 4
Deltarune Chapters 3+4 - A Piano Collection, Vol. 1
Deltarune Chapters 3+4 - A Piano Collection, Vol. 2
Kirby and The Forgotten Land - A Piano Collection, Vol. 1
The Legend of Heroes: Trails in the Sky (Piano Covers Collection, Vol. 1)
Piano Covers Collection - KPop Demon Hunter