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 0x0a7376483d50f7b0389bae80e687e0a77bcaef9497dd1475504033cb02776baf. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3c3ceca-e452-4919-a63d-0e5c9cae7a9b.json and https://artists.proofprofile.net/proofs/artist/b3c3ceca-e452-4919-a63d-0e5c9cae7a9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
កម្លោះសាន់តាអាណា កញ្ញាឡុងប៊ិច
ខ្លាចណាស់ស្នេហ៍កម្ម (Chlangden, Vol.146)