Pol or POL may refer to: Places Pol State, a former princely state in Gujarat, western India; originally Vijaynagar State after its first capital Pol, Iran, a city in Khamir County, Hormozgan provi
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 0xbfaa8b13f3b74c3c8a2f5be9e93c3f42ab1d8835b9a436069610d11e092b93f8. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/324ad325-0e84-4423-b902-7c768c5f6f21.json and https://artists.proofprofile.net/proofs/artist/324ad325-0e84-4423-b902-7c768c5f6f21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).