Jos is a city in the North-Central region of Nigeria with a population of about 900,000 residents based on the 2006 census. Popularly called "J-Town", it is the administrative capital and largest cit
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 0x477fd1edf855483c90ea30812bdf3d0afdb8c560c16ca24dd18afba8881585be. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51bf0a77-acaa-4cea-9c8b-0f08b62f5e4e.json and https://artists.proofprofile.net/proofs/artist/51bf0a77-acaa-4cea-9c8b-0f08b62f5e4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).