CACC may refer to: Calcium-activated chloride channel, a cellular ion signalling pathway Campaign against Climate Change, a UK pressure group that aims to raise public awareness of global warming t
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 0x8812b4eb525e3077b7077b98a6e7fe9d8d41845354115cc4a0fd46c9188a8710. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52b9303e-881c-448a-9888-688474e3787c.json and https://artists.proofprofile.net/proofs/artist/52b9303e-881c-448a-9888-688474e3787c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).