Julien Marchand (born 10 May 1995), is a French professional rugby union player who plays as a hooker for Top 14 club Toulouse and the France national team. Career statistics List of international
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5837e9c70a273daf1094942b1b6b36903886d40f2427181040e6619869657975. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11ab7dad-c548-4faf-8d61-bd52fc48b4ea.json and https://artists.proofprofile.net/proofs/artist/11ab7dad-c548-4faf-8d61-bd52fc48b4ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).