Greeno is a surname. Notable people with the surname include: Gayle Greeno (born 1949), American writer James Greeno (1935–2020), American educational psychologist Lola Greeno (born 1946), Australian
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 0x6619be700a152f76cc2f3da7ce7a46bc7198c17e8993651262b5d48ca8253bf9. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f15a1f2a-6cbd-4e32-b924-1078fcda26f6.json and https://artists.proofprofile.net/proofs/artist/f15a1f2a-6cbd-4e32-b924-1078fcda26f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).