thumb|upright=1.6|Global concentrations of health care resources, as depicted by the number of physicians per 10,000 individuals, by country. Data is sourced from a WHO indicator and is from 2017-2023
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 0xde72c1e71012567e84677dbf826c2454f73190b834046e79f1c796b39697163b. 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/56bbed0d-c1c7-409f-bbae-a8882fbf847f.json and https://artists.proofprofile.net/proofs/artist/56bbed0d-c1c7-409f-bbae-a8882fbf847f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).