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 0xbaf3ceab7d8238e3202f47c206deae457957a113d9750a6a5a029ced7011ac1c. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c9c545-2a65-4b1e-8282-84cb74b5c093.json and https://artists.proofprofile.net/proofs/artist/28c9c545-2a65-4b1e-8282-84cb74b5c093.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Super Obby Adventure (Original Game Soundtrack), Vol. 1