thumb|right|Janne Kataja at the Hartwall Arena in the Elämä lapselle concert on 12 September 2007 Janne Kataja (born 5 April 1980Janne Kataja kisailee kilpavoimistelussa, Ilta-Sanomat 4 February 2011.
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 0x6fd6294cb8b9caf577815be0f5130b6fbdd12edde26a0a8f1e5e073dd70b1997. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.json and https://artists.proofprofile.net/proofs/artist/b20368d8-1a8f-4137-a3a3-430e36bdeccb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).