Ken Park is a 2002 psychological teen film directed by Larry Clark and Edward Lachman. Set in the city of Visalia, California, it revolves around the abusive and dysfunctional lives of four teenagers
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 0x8ebeed96b3fa81e3aa7a925300cd2f632d43bf4b191f654fedb4abfe1eac0d13. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e2123a8-21a6-4618-a15c-94840875147c.json and https://artists.proofprofile.net/proofs/artist/8e2123a8-21a6-4618-a15c-94840875147c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).