Korriche Toufik, better known by his stage name Maradja, is a French singer, songwriter and music producer. He has collaborated with a number of artists and is mostly known for his 2008 hits with DJ A
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 0x16454f0678c679673dab41fa4dc80ae636e08b411af16b18d07861617de05d33. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec38f805-e524-44f0-b7cf-1d43256d9751.json and https://artists.proofprofile.net/proofs/artist/ec38f805-e524-44f0-b7cf-1d43256d9751.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).