thumb|Milkboy in Center City, Philadelphia, 2024 MilkBoy is an American recording studio and entertainment company founded in 1994 by Tommy Joyner. Company headquarters is located at MilkBoy the Studi
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 0x476bd67f3212126e7ff462928f392314c58ca7bd09a9cb5785711803c2278210. 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/ffbe5a97-e182-496e-b8bc-1392f3171c4d.json and https://artists.proofprofile.net/proofs/artist/ffbe5a97-e182-496e-b8bc-1392f3171c4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).