Carina may refer to: Places Australia Carina, Queensland, a suburb in Brisbane Carina Heights, Queensland, a suburb in Brisbane Carina, Victoria, a locality in Mildura Serbia Carina, Osečin
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d31ad65ca4a86a5d097391353bdd9b1ebae19538f2b33c6a763cf55ce42808. 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/f9c8546b-62df-4842-aae0-043cfb6685c2.json and https://artists.proofprofile.net/proofs/artist/f9c8546b-62df-4842-aae0-043cfb6685c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).