thumb|upright=1.25|Main diamond producing countries Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is a tasteless, odorless
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 0xd72ad27d700d38a45baac4f42bb2d268efa5c1bea0f25f8ba2f2ee4481d99b6f. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd02b5d7-02c9-480d-b7d7-b2be8a5c64c6.json and https://artists.proofprofile.net/proofs/artist/fd02b5d7-02c9-480d-b7d7-b2be8a5c64c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).