Samuël Adebiyi, better known by his stage name Féfé (formerly Féniksi), is a French singer and rapper. Early life and career Féfé was born in Clichy, Hauts-de-Seine, France on 18 January 1976 to Yoru
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 0x5a9602bdc59c7f5f25d8cd2b13930e03913381ac74c3efd55384eb89592604bc. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efc4f349-da9a-4d80-8767-7dd76a639bf2.json and https://artists.proofprofile.net/proofs/artist/efc4f349-da9a-4d80-8767-7dd76a639bf2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).