__NOTOC__ Red Cedar may refer to: Trees Toona ciliata, a tree in the mahogany family native to Asia and Australia Toona sureni, a tree in the mahogany family native from South Asia to Papua New G
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 0xfab7ad700d9d1837353cc1d94d1f0b40779963df3f79464641f509e3ab6d39ea. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a344c4c-c18d-44ed-b3e0-3596b5683aa3.json and https://artists.proofprofile.net/proofs/artist/9a344c4c-c18d-44ed-b3e0-3596b5683aa3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).