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 0xbddd14bc29d09d4ed8b14d1e556d27515916f755739f9bcd53961d729387ce48. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a73b3baa-b2a5-4ed7-b326-3284814dc018.json and https://artists.proofprofile.net/proofs/artist/a73b3baa-b2a5-4ed7-b326-3284814dc018.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x4c81c785bf9e2ba8f77c09111bbd362de4f9128676f7ddb1497b1950de064620. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2CY0909276 — a six-check JSON result.
Crash Bandicoot: Warped Theme (Cover Version)
Crash Bandicoot: Warped Theme - Cover Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461dc705c45d0f474c28be574297749e11de579ba31178f47c86675d9e981849. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CB2CY0947792 — a six-check JSON result.
Pokemon Red Green Blue Yellow - Main Titles (8-Bit Version)
Pokemon - Red Green Blue Yellow - Wild Pokemon Battle (8-Bit Version)
Pokemon Red/Blue - Trainer Battle Theme (8-Bit Version)
Crash Bandicoot 2: Cortex Strikes Back Theme (Cover Version)
Castlevania - Stage 1: Vampire Killer (8-Bit Version)
Castlevania - Stage 1: Vampire Killer - 8-Bit Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dc309fbb89488af2a9b25392976eb22cb36eaf7c0fde67e55509e351b4d6c2. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CB2CY0947812 — a six-check JSON result.
House of the Dragon - Main Theme (8-Bit Version)
Helldivers 2 - A Cup of Liber-tea (Main Theme) [8-Bit Version]
The Legend of Zelda Tears of the Kingdom - Main Theme (8-Bit Version)
Red Dead Redemption 2 - American Venom (Main Theme) [8-Bit Version]