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 0x6e7e0dd984d34159725c965a10102f05453e8ae05b5480c2fb74b3af6bdeebff. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6fa5499-79e8-4c81-b768-d48949db7566.json and https://artists.proofprofile.net/proofs/artist/d6fa5499-79e8-4c81-b768-d48949db7566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Chipmunk Song (Christmas Don't Be Late)
Get Up (It's Christmas) [feat. Dan Moxon]