Ciro is a name originally related to Cyrus the Great (the king of Persia): Ciro (given name), a list of the people who share the Italian and Spanish given name Ćiro (given name), a list of the people
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 0x70b2f07bf610071f99c9e352e72ff2063a48ce0bac66909f2e3ca26a20902105. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a570652-2752-464f-8a12-ea7db054739a.json and https://artists.proofprofile.net/proofs/artist/1a570652-2752-464f-8a12-ea7db054739a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).