Hansol Group () is a South Korean conglomerate, or chaebol. The corporation's main operations are paper products, electronics, chemicals, logistics, IT technology and solution services, household inte
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 0x86c7addb108151d5954b678bae93ae8322d41f8ffaafe1d6cbe27356b2fc12b1. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e3f8dd5-170a-442b-aaa6-428412142c5b.json and https://artists.proofprofile.net/proofs/artist/2e3f8dd5-170a-442b-aaa6-428412142c5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).