Cara or CARA may refer to: Places Čara, a village on the island of Korčula, Croatia Cara, a village in Cojocna Commune, Cluj County, Romania Cara Island, off the west coast of Argyll, Scotland Ca
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 0x5f2ae77e97e83bf0df3faac41c020b2a46c2e0aa39104746cd5dbddb6935fd1f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afb1866a-b043-4a58-b6f9-652609f7c803.json and https://artists.proofprofile.net/proofs/artist/afb1866a-b043-4a58-b6f9-652609f7c803.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).