thumb|Young Housewife, oil painting on canvas by Alexey Tyranov, currently housed at the Russian Museum in St Petersburg, Russia (1840s) A housewife (also known as a homemaker or a stay-at-home mother
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 0x3c79097cfe5c3de3e89556b0056bfffe9a8498f35d8d0b405e16106f38e71925. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3459749-e4c5-46a8-9dd0-0b9d0e6f179d.json and https://artists.proofprofile.net/proofs/artist/d3459749-e4c5-46a8-9dd0-0b9d0e6f179d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).