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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf29382439aacf9fcf16cca90cad29d38537201754a9e0331430e5959a263da. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b60bd22e-8c23-4b48-99e0-f057995214d9.json and https://artists.proofprofile.net/proofs/artist/b60bd22e-8c23-4b48-99e0-f057995214d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Duel Keycard 01 (From "Yu-Gi-Oh! Master Duel")
Uchiha Hideout (From "Naruto Shippuden: Ultimate Ninja Storm 2")
The Calm Before the Storm (From "Naruto Shippuden: Ultimate Ninja Storm 2")
Windmill Isle - Day (From "Sonic Unleashed")
Chunin Exams Finals Stage (From "Naruto: Ultimate Ninja Storm")
Battle in the Sand (From "Naruto Shippuden: Ultimate Ninja Storm 2")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda6cd97b41fe1a27b32b169a20dc893b3f31a692e61b6610bd5e54d6e7820b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6L2487603.
Hidden Leaf Forest (Evening) [From "Naruto Shippuden: Ultimate Ninja Storm 2"]
Uchiha Hideout (Destroyed) [From "Naruto Shippuden: Ultimate Ninja Storm Generations"]
Darkness Captures The Flash (From "Naruto Shippuden: Ultimate Ninja Storm 3")
Akatsuki Hideout (From "Naruto Shippuden: Ultimate Ninja Storm 2")
Kabuto's Theme (From "Naruto Shippuden")
The Days When My Mother Was There (From "Persona 5")
Ideal and the Real (From "Persona 5 Royal")
Inn Town (From "Naruto Shippuden: Ultimate Ninja Storm Generations")
Full Moon Full Life (From "Persona 3 Reload")
Forest Of Quiet Movement (Night) [From "Naruto Shippuden: Ultimate Ninja Storm 2"]
Vengeance Is Mine (Radical Highway) [From "Sonic Adventure 2"]
Training Field (Evening) [From "Naruto Shippuden: Ultimate Ninja Storm Generations"]
With The Shinobi World At Stake (From "Naruto Shippuden: Ultimate Ninja Storm 3")
Huge Midair Bombardment (From "Naruto Shippuden: Ultimate Ninja Storm 2")
Seeking Answers (From "Naruto Shippuden: Ultimate Ninja Storm 3")