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 0x13d49634962dc12ddefcb247fd360751662b4475d6762a8b60eeb6a1bf94ba4f. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f9340dc-4e4d-423d-bef6-f3217a7f9b50.json and https://artists.proofprofile.net/proofs/artist/1f9340dc-4e4d-423d-bef6-f3217a7f9b50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bus, Car, Truck, Motorbyke, Train... Special Sound Effects.
Tennis, Gong, Waterfall, Heartbeat... Special Souns Effects.
Italy, France, Germany, Holland... Special Sound Effects.
Nature, Explosions, Humans, Transport... Special Sound Effects.
Roar, Ufo, Bottle, Shout, Cartoons... Special Sound Effects.
Audience, Baby Speaking, Bowling... Special Sound Effects.
Siren, Baby, Clock, Fireworks, Coin... Special Sound Effects.
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 0xf258b1c28e57b28ff4be468b4ba58e50a8aa70ae9340916c49ba919c9272bc47. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES5631105041.
Storm, Cafeteria, Wedding, Park... Special Sound Effects.
Phone, Coffee Maker, Tabulator... Special Sound Effects.
Photo Camera Shots, Match, Bath... Special Sound Effects.
Beast, Explosions, Thunder, Boiled Water... Special Sound Effects
Phone, Vacuum, Gas Coocker, Wc, Glass... Special Sound Effects
Traffic Jam, Works, Cash Register... Special Sound Effects
Inside Plane, Bus, Check in, Truck, Wagon... Special Sound Effects
Electromagnetic Waves, Chains, Laser... Special Sound Effects
Pain Screams, Terror, Howl, Elephant. Special Sound Effects.
Animation and Comic Sound Effect. Science Fiction
Horror Ambient Music. Halloween Atmosphere