Francis Leblanc, known professionally as Fridayy, is an American singer and rapper from Philadelphia, Pennsylvania. In 2022, he signed with Def Jam Recordings and guest performed on the hit songs "For
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366cd42e6c84a9d27978549c5a13bf6fbccc5f38025f4758de969f16eb5b29d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d643da0-3bbe-4a3f-8b58-4ff905df4d04.json and https://artists.proofprofile.net/proofs/artist/4d643da0-3bbe-4a3f-8b58-4ff905df4d04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).