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 0xc4801c03b982070321e75520978332c2d4d65fad13c83320c87e1a404f474df3. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eae9edc0-cbc6-41ac-b525-46f098049771.json and https://artists.proofprofile.net/proofs/artist/eae9edc0-cbc6-41ac-b525-46f098049771.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natsuhiboshi (Original Soundtrack from Naruto) [Piano Version]
Natsuhiboshi (Original Soundtrack from Naruto) - 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 0xf34105932b7a9c86fc43d76faa30793264dbcccfa33e56607ee0ae6718cc3cf4. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:29:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72125953.
Kakariko Village (Original Soundtrack from "Zelda: A Link to the Past") [Piano Version]
Victor's Piano Solo (Original Motion Picture Soundtrack from "Corpse Bride")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fdefcd153d4b1098d5df856131cbd26f5d13cbd6f34f2716143929bf411728. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN62132220.
Promise of the World (Original Motion Picture Soundtrack from "Howl's Moving Castle") [Piano Version]