thumb|15th century depiction of an Ouroboros from the alchemical treatise (Zurich, Rheinau 172). Alchemy (from the Arabic word , ) is an ancient branch of natural philosophy, a philosophical and pro
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 0x056b877c51d673afb55c9c7d696962c8c6555bc9c63434bc2392fb8189fde5b8. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c10e9191-93f0-4eab-9e43-8109cc2fe653.json and https://artists.proofprofile.net/proofs/artist/c10e9191-93f0-4eab-9e43-8109cc2fe653.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).