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 0x913a7fa77b5519648654bd212329f1d73ad3fab1d2762d0dcbbac598bf0d6d6b. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15e5c28c-e435-47c0-a2cd-4494834c6141.json and https://artists.proofprofile.net/proofs/artist/15e5c28c-e435-47c0-a2cd-4494834c6141.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I want to eat Watermelon Ice Cream (feat. KAFU & HATSUNE MIKU)
That's just the way it is! (feat. KAFU & HATSUNE MIKU)
Shouldn't I be late? Shouldn't? Shouldn't? (feat. HATSUNE MIKU & KAFU)
My Boss My Mentor (feat. KAFU & HATSUNE MIKU)
Marshmallow Vanilla Ice Cream (feat. KAFU)
Enjoy your decision! (feat. HATSUNE MIKU & KAFU)
Let's sleep a lot on our days off! (feat. KAFU & HATSUNE MIKU)
I'll throw it away for a little over 10 minutes!