In Demand (stylized as iN DEMAND) was an American cable television service which provided video on demand services, including pay-per-view. Comcast, Cox Communications, and Charter Communications (wit
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 0x72bfb242a0a9291fdc27ac5d92d47fb8765965decf8458ad887b5cc202f8062f. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1bb0570-1d3a-4332-ba93-2bb42aea9945.json and https://artists.proofprofile.net/proofs/artist/e1bb0570-1d3a-4332-ba93-2bb42aea9945.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).