thumb|right|Insect trapped in resin thumb|upright|Cedar of Lebanon cone showing flecks of resin as used in the mummification of Egyptian Pharaohs A resin is a solid or highly viscous liquid that can
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 0x21160a2894f391653558a13477ba88e440ddfff55ddda0e204a74c9a32628f8c. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38a40473-a36d-4911-80de-c92cd2eaf15f.json and https://artists.proofprofile.net/proofs/artist/38a40473-a36d-4911-80de-c92cd2eaf15f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).