Benjamin Joseph Levin (born March 8, 1988), known professionally as Benny Blanco (stylized in all lowercase), is an American record producer. He is the recipient of the 2013 Hal David Starlight Award
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 0x3ac5e1ca90f39eb42aac073b39747e2e4a268ee6919c776f52fdfbce25041dfb. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef290646-4fd3-45ac-a88b-b3174b288a10.json and https://artists.proofprofile.net/proofs/artist/ef290646-4fd3-45ac-a88b-b3174b288a10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).