Up Close is an American sports interview show that aired on ESPN+ in 2021 and had aired on ESPN from 1981 to 2001. History Early years The program debuted in 1981 on USA Network and was created by th
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 0x170e940b99818586a99dea689cd2fd1b1fc5dad87d22e80a79a37a630c3e871b. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4abb353-4a1f-40e0-aed9-ea668cab271d.json and https://artists.proofprofile.net/proofs/artist/f4abb353-4a1f-40e0-aed9-ea668cab271d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).