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 0x63dfdab983b3370e34e10377dbab26a9644c981deec92f2baa0a2da6f427adb7. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab667b95-da50-43e4-a7f8-5a76805e382e.json and https://artists.proofprofile.net/proofs/artist/ab667b95-da50-43e4-a7f8-5a76805e382e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chemical Plant Zone (Sonic the Hedgehog 2)
Majora's Mask Medley: Song of Healing / Deku Palace/Stone Tower Temple / Kamaro's Dance / Termina Field (From "Legend of Zelda: Majora's Mask")
Under the Sea (From "The Little Mermaid")
Those Who Fight (From "Final Fantasy VII")