Spencer Garrett Heckenkamp (born September 19, 1963) is an American actor. He is best known for his roles in the films Air Force One (1997), 21 (2008), Public Enemies (2009), All the Way (2016), and 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 0x02bcaa31dbb08b257598f467d7089ff0a59ba2071334463d52dc4c0db00040a8. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46eca0af-b3f4-43e3-816d-48660db81469.json and https://artists.proofprofile.net/proofs/artist/46eca0af-b3f4-43e3-816d-48660db81469.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).