Michaël Eveno, better known by his stage name Grems (born 25 October 1978), is a French rapper and producer of French hip hop and designer. He made his debut in the group Hustla alongside Le Jouage (
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 0xdd7f284036097f13f96f34e16cd560656bab960c0315c437a8ae0058d53d2e6b. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8d21c18-535b-4c2a-9178-1fe51ba6666b.json and https://artists.proofprofile.net/proofs/artist/b8d21c18-535b-4c2a-9178-1fe51ba6666b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).