Division may refer to: Mathematics Division (mathematics), the inverse of multiplication Division algorithm, a method for computing the result of mathematical division Military Division (military), a
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 0x58715045d48b55147fcff1be85dd90fb177a2645e25163103a4846828025c7bb. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d482d077-9cd9-4bf1-87bf-1c93e8dfa9b0.json and https://artists.proofprofile.net/proofs/artist/d482d077-9cd9-4bf1-87bf-1c93e8dfa9b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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