Knotty is a Scottish team sport played with sticks and a cork fishing float. It is a variation of the game of shinty as played in the fishing communities of Lybster, Caithness. It used to be played wi
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 0xd8dce99ce9b6c94aa59e72156ceae5d4c6f78f050e5d95a978092e59469aaa51. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b13f9fc-71c7-46b9-9068-f4773266589a.json and https://artists.proofprofile.net/proofs/artist/8b13f9fc-71c7-46b9-9068-f4773266589a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).