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 0x2a22dbd50671006041059eab2aba5d0fbc88fc5da9e67f06bb3675a36e101098. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df664228-b211-413b-892f-04573f67af66.json and https://artists.proofprofile.net/proofs/artist/df664228-b211-413b-892f-04573f67af66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe2e33ba94b1a43797cc63e0619701eabd0a304a9f7ff26ec4361bb7b0bee77ca. 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/QZFYX2371613.
Koopaling Battle (from Super Mario Bros. 3)
Dirty & Beauty (from Kirby Triple Deluxe)
I Am... All of Me (from Shadow the Hedgehog)
Charles on the Hunt (from Choo-Choo Charles)
Hyrule Castle (from The Legend of Zelda: A Link to the Past)
Meta Knight (from Kirby Super Star Ultra)
Otherworldly Warrior (from Kirby Super Star Ultra)
The Only Thing I Know For Real (from Metal Gear Rising: Revengeance)
Gourmet Race (from Kirby Super Star Ultra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b8f3e2329991b654e54be690e01b12c16e14d01778101ceed69efa280872e7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZWFT2443952.