thumb|right|upright|Sheet music for Harry King's setting of the song performed by Dan Leno (1889) "The Muffin Man" is a traditional nursery rhyme, children's song, or children's game of English origin
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 0x7c1c28b78bea7b71f5e5fb8d1561fa651d3d4822f1a15c0f6cfa7c23c3a36a69. 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/5365cd07-18e2-47c4-9991-3b83e9f2273d.json and https://artists.proofprofile.net/proofs/artist/5365cd07-18e2-47c4-9991-3b83e9f2273d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).