Coro or CORO may refer to: Entertainment Coro (Berio), a composition by Luciano Berio Coro (music), Italian for choir Coro TV, Venezuelan community television channel Omweso (Coro), mancala game
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 0x571a31cce62acb2e49cec0799cfb5adb1cf433c85e0451d62375958905ce6fcd. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa6e2c22-4d86-4cec-918c-3bf4d9be3d3a.json and https://artists.proofprofile.net/proofs/artist/fa6e2c22-4d86-4cec-918c-3bf4d9be3d3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).