1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42ed40f31bd2d62e944caf155dda51f58356068b5254ceb7979b8fce82de7b9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4070a787-e0db-4629-9198-f0d44077d74a.json and https://artists.proofprofile.net/proofs/artist/4070a787-e0db-4629-9198-f0d44077d74a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Essential Sound Effects, Vol. 1 (High Quality Special Audio FX Collection)
Warning System Alert, Large Explosion - Sci-Fi Sound FX
Ultra Bass Acceleration with Blast - DJ Tool
Django Shoots First - Western Movie Sound FX
Wanted Dead or Alive - Western Movie Sound FX
Western Hero: Gun Shots, Horse Running - Western Movie Sound FX
Old West Saloon - Western Movie Sound FX
Coyote Falls to the Ground - Cartoon Sound FX
Magic Disappearance with Zapp - Cartoon Sound FX
Falling Down and Splash - Cartoon Sound FX
Essential Sound Effects, Vol. 3 (High Quality Special Audio FX Collection)
Long Rise with Alarm Tones and Huge Impact - Sci-Fi Sound FX
Valentine's Day Cupid - Cartoon Sound FX
Clown Show with Laughs and Applause - Fun Sound FX
Car Starting, Horn, Screech, Swoosh and Roar - Cartoon Sound FX
Falling Down, Clash and Chirping - Cartoon Sound FX
Funny Drum Roll with Impact - Cartoon Sound FX
Robot Craziness with Explosion - Sci-Fi Sound FX
Starship Alarm, Large Explosion - Sci-Fi Sound FX
Beep Alert with Final Massive Bang - Sci-Fi Sound FX
Mountain Water Stream - Pure Nature Sound FX
The Good, the Bad and the Ugly - Whistle Sound FX
Essential Sound Effects Top 100 (High Quality Special Audio FX Collection)
Space Station Alarm, Massive Explosion - Sci-Fi Sound FX
Super Mario Bros. - 80's Video Game Sound FX
Ah-Choo! Super Loud Sneeze - Beat Box Mix
Balloon Bigger and Bigger, Explosion - Cartoon Sound FX
Falling Down and Bump - Cartoon Sound FX
Summer Flower Field - Pure Nature Sound FX
Merry Christmas Sleigh Bells - Christmas Sound FX
Santa's Christmas Ho Ho Ho - Christmas Sound FX
Merry Christmas Children Chorus - Christmas Sound FX
Essential Sound Effects, Vol. 2 (High Quality Special Audio FX Collection)
For a Few Dollars More - Whistle Sound FX
Medieval Archery Tournament - Cartoon Sound FX
Spaceship Warning System - Sci-Fi Sound FX