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 0x750455fefea4cfc9e431559df001ef55dfa83ad327a934d9d2b112d7a252ca0f. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82b6ed33-0e97-4dc5-af87-cbcc001e26ae.json and https://artists.proofprofile.net/proofs/artist/82b6ed33-0e97-4dc5-af87-cbcc001e26ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frontlines: Fuel of War (Original Game Soundtrack)
Frontlines: Fuel of War (Official Soundtrack)
Escape (From "Homefront") - Itunes Ringtone
Parking Lot Fight (From "Homefront") - Itunes Ringtone
Golden Gate (From "Homefront") - Itunes Ringtone
Good by Boone (From "Homefront") - Itunes Ringtone
Oasis (From "Homefront") - Itunes Ringtone
Goliath (From "Homefront") - Itunes Ringtone
Lobby (From "Homefront") - Itunes Ringtone
The Drop Off (From "Homefront") - Itunes Ringtone
Main Theme (From "Homefront") - Itunes Ringtone
Cul De Sac (From "Homefront") - Itunes Ringtone
Infinite Crisis: Official Video Game Soundtrack
Infinite Crisis (Official Video Game Soundtrack)
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 0x7f9ddda9a4fc94c0aec42f206436ae9ad9c1b3cbf80d8311e6d9e5ebc4c51e71. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USDY41816957.