The Chams (Cham: , چام, cam), or Champa people (Cham: , اوراڠ چمڤا, Urang Campa; or ; , ), are an Austronesian ethnic group in Southeast Asia and are the original inhabitants of central Vietnam and c
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 0xe00ca7e2b5e25ecc5ebe8c6bc1d834bdebdae797204a63a773fb27e0ea1002af. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb6c0c59-b2a9-420b-830f-e478b3b2ea76.json and https://artists.proofprofile.net/proofs/artist/bb6c0c59-b2a9-420b-830f-e478b3b2ea76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).