thumb|right|The first issue of the Norwegian Pondus magazine, 4 July 2000 Pondus is a comic strip created by the Norwegian cartoonist Frode Øverli. Since its start in 1995, it has become one of the m
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 0x4138264d0b6c59e0e31613edb643c9439fce6aa613ca64150e8485cff021f87f. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cce4f661-452e-4edd-b23e-6d6aec96ecf7.json and https://artists.proofprofile.net/proofs/artist/cce4f661-452e-4edd-b23e-6d6aec96ecf7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).