Kingpin or king pin may refer to: Vehicular part Kingpin (automotive part), the pivot in the steering mechanism The central bolt of a skateboard, axle assembly ("truck"), around which the rest of t
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 0xf86e80ccdb61e257c6f82300419ae68fcb2ae844acf27b4d238a25ee55ef14df. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a73b2c8-b0fc-477e-9851-369e9a0933f2.json and https://artists.proofprofile.net/proofs/artist/0a73b2c8-b0fc-477e-9851-369e9a0933f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).