thumb|Botanical illustration of a pōhutukawa sprig by Ellen Cheeseman Pōhutukawa (Metrosideros excelsa), also known as the New Zealand Christmas tree, or iron tree, is a coastal evergreen tree in the
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 0xa01beda476d3823589eef70fe63a252154aa6205dbc8da32a7ce6c2eec07467f. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/389f3847-fb61-454e-a406-57861947894e.json and https://artists.proofprofile.net/proofs/artist/389f3847-fb61-454e-a406-57861947894e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).