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 0xef49328323562c02fc2427c26d555148ee7c1c755821617088d3cc386852f214. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c30ca46f-0181-41d3-9e80-f392de88b2c2.json and https://artists.proofprofile.net/proofs/artist/c30ca46f-0181-41d3-9e80-f392de88b2c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Ocean on His Shoulders (From "Bioshock" Videogame Original Soundtrack)
The Ocean On His Shoulders (from "Bioshock" videogame)
Nate's Theme (From "Uncharted" Videogame Original Soundtrack)
Nate's Theme (from "Uncharted" videogame)
Ghosts 'N Goblins Main Theme (From Ghosts 'N Goblins Videogame Original Soundtrack)
Bella Ciao (From "Money Heist / la Casa de Papel" TV Series Soundtrack)
The Entertainer (From "The Sting" Movie Soundtrack)
Sabre Wulf Theme (From "Sabre Wulf" Videogame)
Robocop Main Theme (from "Robocop" videogame)
Robocop Main Theme (from "Robocop" Videogame Soundtrack)
Minuet in G Minor (from "La abadía del crimen" videogame Soundtrack)
Bella Ciao (from "Money Heist / La Casa De Papel" TV Series)
Already Dead (from "Red Dead Redemption" Videogame)
Way back then (from "Squid Game / El juego del calamar" TV Series)
Ой, ходить сон коло вікон (ukrainian lullaby)
Metal Gear Solid 2: Sons of Liberty Theme
Castlevania II: Simon's Quest - The silence of the daylight