Newcastle usually refers to: Newcastle upon Tyne, a city and metropolitan borough in Tyne and Wear, England, United Kingdom Newcastle-under-Lyme, a town in Staffordshire, England, United Kingdom New
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 0xc9e9e1d092aef8657f41f030211b250b0bff815b6df4869ae68fe45c042ae089. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5943838f-df96-4860-b3ca-6c8e87afef4d.json and https://artists.proofprofile.net/proofs/artist/5943838f-df96-4860-b3ca-6c8e87afef4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).