thumb|Burning incense at the Longhua Temple thumb|Smoke from incense stick Incense is an aromatic biotic material that releases fragrant smoke when burnt. The term is used for either the material or t
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 0x406e7cf61b11b4a50878b85667edb62264fb5ed823c000cb881cf211f6c57135. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2540595e-fd72-4fe3-a0cb-d79190305189.json and https://artists.proofprofile.net/proofs/artist/2540595e-fd72-4fe3-a0cb-d79190305189.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).