thumb|upright=1.35|Twine showing component strands Twine is a strong thread, light string or cord composed of string in which two or more thinner strands are twisted, and then twisted together (plied)
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 0xefc30bbf2ce157fa15c9283b93bdb2fbce70dec27ba76f7a8bf145f34c4d0e38. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/992010a8-dc71-4942-84a9-fe96d82ec115.json and https://artists.proofprofile.net/proofs/artist/992010a8-dc71-4942-84a9-fe96d82ec115.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).