Florent Atem (born 24 November 1979) is a French Polynesian guitarist and academic who was the first Tahitian nominated for a Grammy Award. He is the son of educator Felix Atem and brother of academic
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 0xfc508c2470b44a1dbbe0b71f034ea400dcd9c0a45323c63541955cf752b46eb5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a13e94b-40a0-453e-b623-d3447cd15967.json and https://artists.proofprofile.net/proofs/artist/5a13e94b-40a0-453e-b623-d3447cd15967.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).