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 0x2ce05aaf1b677dd88a46b068f01b102bb2ff30ca0608b479b291d488ba70463f. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fca4a24-62d9-40b6-9d96-9223eea6e0f5.json and https://artists.proofprofile.net/proofs/artist/9fca4a24-62d9-40b6-9d96-9223eea6e0f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
loop (feat. Anoice, Takahiro Kido & Yuki Murata)
dispersion (feat. Anoice, Takahiro Kido & Yuki Murata)
noctiluca (feat. Anoice, Takahiro Kido & Yuki Murata)