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 0x28b685fd348692d6962c00c843bc25604839b36cd46a214e683f7f892c096146. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dac15084-1444-404e-89ad-d44e15dce69e.json and https://artists.proofprofile.net/proofs/artist/dac15084-1444-404e-89ad-d44e15dce69e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Naming you (feat. Hatsune Miku & Megurine Luka)
Chasing me (feat. Megurine Luka & Hatsune Miku)