Punch commonly refers to: Punch (combat), a strike made using the hand closed into a fist Punch (drink), a wide assortment of drinks, non-alcoholic or alcoholic, generally containing fruit or fruit
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 0xb40f68613b5652d5ba1764b527df64e64842b7aa5a1f96e3028d4de55c70e64d. 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/995e2c31-7497-4f2d-ad01-7a61728f126f.json and https://artists.proofprofile.net/proofs/artist/995e2c31-7497-4f2d-ad01-7a61728f126f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).