Ham Chan (, also Romanized as Ham Chān and Hamechān; also known as Hameh Chān) is a village in Tuskacheshmeh Rural District, in the Central District of Galugah County, Mazandaran Province, Iran. At th
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 0xa5bcb4a0b4e133b8bb4601566b9048dee41d6beab879ea4f4bd73fbeb27add9e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/611bd258-67ce-4b30-af69-82ede19b70c2.json and https://artists.proofprofile.net/proofs/artist/611bd258-67ce-4b30-af69-82ede19b70c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).