Angora may refer to: Places Angora, the historic name of Ankara, the capital city of Turkey Angora, Colorado Angora, Minnesota Angora Township, Minnesota Angora, Nebraska Angora, Philadelphia Angora
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 0x2512586170dcc3a5a05b700a2bfdbf9771771d259dec14c3a29b65986264f3c0. 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/f07f406e-511c-4a96-a0cc-c9c9d3312d87.json and https://artists.proofprofile.net/proofs/artist/f07f406e-511c-4a96-a0cc-c9c9d3312d87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).