Diem may refer to: Latin phrases , a Latin phrase meaning "seize the day" , meaning "per day" , a legal term meaning "from day to day" People Given name Diem Brown (1980–2014), American television p
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 0xa04c9a2dfe94b97297c4a0e4ee66238b0b8e41178ad934f04f6e9bd9922f5469. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ec7419c-b4ff-4ee5-8644-abc94bc2ae4f.json and https://artists.proofprofile.net/proofs/artist/2ec7419c-b4ff-4ee5-8644-abc94bc2ae4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).