Jan Decleir (born as Jan Amanda Gustaaf Decleir on 14 February 1946) is a prolific Belgian movie and stage actor born in Niel, Antwerp. Career He had his first big role in Fons Rademakers's Mira (197
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 0xeb2ce1d5f25bff53dd3cbaaf6fc1c33265ce0615a5ae8c9ed324159f4e9ab3de. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bf016d0-76a7-44c8-88fa-55ab7a1f2a11.json and https://artists.proofprofile.net/proofs/artist/0bf016d0-76a7-44c8-88fa-55ab7a1f2a11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).