thumb|The village Storsien in 2014. Storsien is a small village in Kalix Municipality in northern Sweden. It is best known for the internment camp located there where about 300–370 communists and paci
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 0x75ffa4fbbc4bfd3375f86de028ee81beb4b547333ba355dbb40ff4adc4eae25b. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63e12f67-ee41-4534-b1d8-4c070a940396.json and https://artists.proofprofile.net/proofs/artist/63e12f67-ee41-4534-b1d8-4c070a940396.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).