5Star (stylized as 5STAR) is a British free-to-air television channel owned by Channel 5 Broadcasting Limited, a wholly owned subsidiary of Paramount Skydance Corporation, which is grouped under Param
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 0xa3dcbabb95bf2b0ae34b5b50c0972df65993439e6d9e8dbf020bf95f14c099ec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02dd2dcc-8d5d-46f0-8f33-58fdbd0e00e7.json and https://artists.proofprofile.net/proofs/artist/02dd2dcc-8d5d-46f0-8f33-58fdbd0e00e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).