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 0xde45143b2f2b911a18f4b18299843a0c7d8b1713a15d1e843237dfaff3ff99b2. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96d752ea-8c22-49f5-81be-3f6b3c0a7c9f.json and https://artists.proofprofile.net/proofs/artist/96d752ea-8c22-49f5-81be-3f6b3c0a7c9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Djarr (feat. Ben Coker, Josh Davis, Curran Seth, Katie Crino & Lexi Ashby)