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 0x5f25743cf238139671f091e526399541ebf8d3edc88b30c8227f6d8058f3fe6c. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c713a685-6670-4da1-8bca-1515c00e21f0.json and https://artists.proofprofile.net/proofs/artist/c713a685-6670-4da1-8bca-1515c00e21f0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mipha's Theme (The Legend of Zelda: Breath of the Wild)
A Life Sent On (From "Xenoblade Chronicles 3")
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 0xba3d8ffc9c52f090da2c92cebe7161452da6e5fda4985fb76ff04decd2eeb95b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2452503 — a six-check JSON result.
The Beginning of our Memory (Xenoblade Chronicles 2 Torna - The Golden Country)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6613529431f006515e76705b9a06e562b1064f92e2d3507bc665877cba49331. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2484805 — a six-check JSON result.
The Legend of Zelda: Tears of the Kingdom Official Trailer #3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97510ebb373c4748ac8c57badd51de6ac113320007b88c263b98d879c4657b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2476679 — a six-check JSON result.
Garfont Mercenaries (Xenoblade Chronicles 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a9f626bf244c54cb9fda23bc1a60a3f5f57c57ed0eacf50ed0a363ec1e492. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEN2454082 — a six-check JSON result.
Attack on Vah Ruta (From "The Legend of Zelda: Breath of the Wild")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22069845ef7467aeb5453f7de7aed10b66a9be721bc9be3660841f925d21a01. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2480717 — a six-check JSON result.
We Are The Chosen Ones (Xenoblade Chronicles 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b71e3b0cc3e7325bc940003ad4541a2cf6e695c59dbab0171365130b4ca98c9. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2553107 — a six-check JSON result.
The Champion Revali (From "Hyrule Warriors: Age of Calamity")
Gramps Fonsett Village (From "Xenoblade Chronicles 2")