upright|thumb|Pāreu on display in Rarotonga A pāreu or pareo is a wraparound skirt worn in Tahiti. The term was originally used only for women's skirts, as men wore a loincloth, called a maro. Nowada
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 0x647ba4865264b39255023a5ad6434464dd4c01c5c9dfc9e0cc1882df30bc7597. Chain 2 (Bitcoin): anchored in block 953882 (2026-06-16T03:13:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a6d8e7d-c8d9-4740-9e4f-30fd17bd762b.json and https://artists.proofprofile.net/proofs/artist/0a6d8e7d-c8d9-4740-9e4f-30fd17bd762b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).