Ron Leshem () is an Israeli American screenwriter, producer, and author. He is an executive producer of Euphoria, which was based on the Israeli television series he co-created and co-wrote in 2012. H
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 0x7565d3037e5da86813fbcb16975fb7b330739aa5e74b7494660c563bfafa37d3. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c047a03c-9814-4c8a-9bad-60180714c745.json and https://artists.proofprofile.net/proofs/artist/c047a03c-9814-4c8a-9bad-60180714c745.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Feuer [Israel und der 7. Oktober (Ungekürzte Lesung)]